CN105502386B - A kind of preparation method of micropore carbon nanosheet - Google Patents

A kind of preparation method of micropore carbon nanosheet Download PDF

Info

Publication number
CN105502386B
CN105502386B CN201510948418.XA CN201510948418A CN105502386B CN 105502386 B CN105502386 B CN 105502386B CN 201510948418 A CN201510948418 A CN 201510948418A CN 105502386 B CN105502386 B CN 105502386B
Authority
CN
China
Prior art keywords
carbon
carbon nanosheet
micropore
nanosheet
koh
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201510948418.XA
Other languages
Chinese (zh)
Other versions
CN105502386A (en
Inventor
王延忠
薛超瑞
***
刘洋
刘炜
常青
董英鸽
胡胜亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
North University of China
Original Assignee
North University of China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by North University of China filed Critical North University of China
Priority to CN201510948418.XA priority Critical patent/CN105502386B/en
Publication of CN105502386A publication Critical patent/CN105502386A/en
Application granted granted Critical
Publication of CN105502386B publication Critical patent/CN105502386B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors

Abstract

The invention discloses a kind of preparation method of micropore carbon nanosheet, and it is used as the electrode material of ultracapacitor.This method is to utilize water-soluble inorganic salt NaCl to be template, and glucose, sucrose or cellulose are carbon matrix precursor;Carbon source is uniformly wrapped in after a cube NaCl crystal templates surface, high temperature cabonization, and removing NaCl templates using deionized water obtains two-dimentional carbon nanosheet;Then use after KOH high-temperature activations, plus watery hydrochloric acid removes potassium compound, it is tens nanometers of micropore carbon nanosheet to obtain high-specific surface area and thickness;As electrode material for super capacitor, with larger specific capacitance, high rate performance and excellent cyclical stability.In addition, present invention process is simple, and it is with low cost, suitable for commercial Application.

Description

A kind of preparation method of micropore carbon nanosheet
Technical field
The invention belongs to new energy materialses research field, it is related to a kind of preparation method of high specific surface micro-pore carbon nanosheet And its application in ultracapacitor.
Background technology
Ultracapacitor is as a kind of novel energy storage apparatus, due to power density height, fast charging and discharging, cycle life The series of advantages such as length, the wide, safety non-pollution of operating temperature range, in mobile communication, information technology, consumer electronics, electronic vapour Had broad application prospects in terms of car, Aero-Space and science and techniques of defence, it is considered to be a kind of preferable electrochmical power source.It is super The performance of capacitor depends primarily on specific surface area, pore-size distribution, microstructure and electric conductivity of electrode used therein material etc..Mesh Before, commercialization ultracapacitor is mainly used as electrode material by the use of activated carbon.Compared to other carbon materials, absorbent charcoal material have than Surface area is big, raw material sources are abundant, low cost and other advantages.But because the activated carbon granule of conventional method preparation is than larger(50~ 200 μm), which increase the diffusion length of electrolyte ion, so that causing the performance of capacitor reduces.
Carbon nanosheet as a species graphene-structured New Two Dimensional carbon nanomaterial, due to its have higher ratio table Area, excellent electric conductivity, are widely used in electrochemical energy storage and electro-catalysis field.The thickness of carbon nanosheet is generally 10 Between ~ 100 nm, so as to significantly reduce the diffusion length of electrolyte ion.Compared with grapheme material, prepared by carbon nanosheet Cost is low, is difficult to reunite, it is considered to be a kind of preferable electrode material for super capacitor.
The content of the invention
The present invention is intended to provide a kind of simple, cost is low, high-specific surface area micropore carbon nanosheet preparation method, pass through When carbon nanosheet prepared by this method is used for electrode of super capacitor, capacitor shows good chemical property.
The invention provides a kind of preparation method of micropore carbon nanosheet, using water-soluble NaCl inorganic salts as template, grape After sugar, one kind of sucrose or cellulose are carbon source, high temperature cabonization, washing removes inorganic salts template, obtains 50 ~ 200 nm thickness Two-dimentional carbon nanosheet;Then activated using KOH, acquisition specific surface area is 1756 ~ 2212 m2 ·g-1, pore volume be 0.64 ~ 1.21 cm3·g-1Micropore carbon nanosheet.
The preparation method of the micropore carbon nanosheet, comprises the following steps:
(1)The one kind for taking glucose, sucrose or cellulose is carbon source, using water-soluble NaCl inorganic salts as template, is dissolved in In ionized water, 30 ~ 60 min are stirred, in 80 ~ 120 DEG C of drying;
The quality proportioning of the carbon source and NaCl templates is:1:1~1:6;The amount that deionized water is used per 1g carbon sources is 5 ~ 50 mL;
(2)Said mixture is taken, in N2Under protection, then 500 ~ 600 DEG C of 1 ~ 3 h of pre- carbonization remove nothing with deionized water Machine salt template, filtering, 80 ~ 120 DEG C of dryings obtain two-dimentional carbon nanosheet;
(3)Carbon nanosheet and KOH are well mixed, in N2Under protection, 700 ~ 900 DEG C of 1 ~ 3 h of activation, with 0.1 ~ 2 M HCl removes impurity, and filtering, 80 ~ 110 DEG C of dryings obtain final products;
The mass ratio of the carbon nanosheet and KOH is 1:1~1:4.
The performance of micropore carbon nanosheet product according to obtained by the above method:The thickness of carbon nanosheet is 50 ~ 200 nm, than Surface area has reached 1756 ~ 2212 m2 ·g-1With the cm of pore volume 0.64 ~ 1.213 ·g-1.The carbon nanosheet is used as ultracapacitor Electrode material when, evaluate its chemical property in conventional three-electrode system, platinized platinum is that, to electrode, saturation calomel is reference electricity Pole, electrolyte is that 6 M KOH are 1 Ag in current density-1When, specific capacitance reaches 221 ~ 308 Fg-1
Beneficial effects of the present invention:
(1)Present invention process is simple, with low cost, suitable for commercial Application;
(2)Compared with conventional template, water-soluble inorganic salt is cheap and easily removes;
(3)The thickness of carbon nanosheet is regulated and controled by the addition of inorganic salts, shortens the diffusion length of electrolyte ion, improves Capacitive property.
Brief description of the drawings
Fig. 1 is the stereoscan photograph of the gained micropore carbon nanosheet of embodiment 1;
Fig. 2 is the stereoscan photograph of the gained micropore carbon nanosheet of embodiment 2;
Fig. 3 is the transmission electron microscope photo of the gained micropore carbon nanosheet of embodiment 2;
Fig. 4 is the N of micropore carbon nanosheet obtained by Examples 1 and 22The adsorption-desorption figure profile of equilibrium;
Fig. 5 is the graph of pore diameter distribution of micropore carbon nanosheet obtained by Examples 1 and 2;
Fig. 6 be Examples 1 and 2 in 6 M KOH electrolyte, sweep speed be 50 mVs-1Cyclic voltammetry it is bent Line;
Fig. 7 is micropore carbon nanosheet obtained by Examples 1 and 2 in 1 Ag-1Charging and discharging curve;
Fig. 8 is the gained micropore carbon nanosheet of embodiment 2 in 5 Ag-13000 circulation capacitive properties of discharge and recharge.
Embodiment
The present invention is further illustrated below by embodiment, but is not limited to following examples.
Embodiment 1(Comparative example):
Weigh 2g glucose to add in 50 mL deionized waters, at room temperature the min of magnetic agitation 30, then in 100 DEG C of dryings 10 h;Mixture after drying is transferred in ceramic crucible, tube furnace is placed in, in N2Under protection, 500 DEG C of 2 h of carbonization;Take 1g institutes Obtain carbon material to be sufficiently mixed with 4 g KOH stirrings, tube furnace is placed in, in N2Under protection, 800 DEG C of 1 h of carbonization;By gained carbon material 10 h in 0.1 M HCl solutions are immersed in, are filtered, in 100 DEG C of vacuum drying, micro-pore carbon material are obtained.The specific surface area of carbon material For 927 m2g-1, pore volume is 0.31 cm3g-1
NaCl templates are not used in the present embodiment.
After testing, using the carbon nanosheet as the electrode material of ultracapacitor, specific capacitance is in 6 M KOH electrolyte 184 F g-1(current density is 1 Ag-1);In the Ag of current density 5-1Under, after 3000 constant current charge-discharge circulations, than Electric capacity retention is 79.6%.
Fig. 1 shows the stereoscan photograph of micropore carbon nanosheet obtained by the present embodiment;It can be seen that without adding NaCl moulds During plate, there is no carbon nanosheet in carbon material.
The N of micropore carbon nanosheet obtained by the present embodiment2The adsorption-desorption profile of equilibrium, pore-size distribution, cyclic voltammetry are bent Line and charging and discharging curve refer to Fig. 4 ~ Fig. 7.
Embodiment 2
Weigh 2 g glucose and 4 g NaCl are added in 50 mL deionized waters, at room temperature the min of magnetic agitation 30, then In 100 DEG C of dry 10 h;Mixture after drying is transferred in ceramic crucible, tube furnace is placed in, in N2Under protection, 500 DEG C of carbon Change 2 h;Gained carbon material is immersed in 10 h in 80 DEG C of deionized waters and removes NaCl, filtering, in 100 DEG C of vacuum drying, obtains carbon Nanometer sheet material;Take 1 g carbon nanosheets to stir with 4 g KOH to be sufficiently mixed, tube furnace is placed in, in N2Under protection, 800 DEG C of carbonizations 1 h;Gained carbon material is immersed in 10 h in 0.1 M HCl solutions, filtered, in 100 DEG C of vacuum drying, microporous carbon nanometer is obtained Sheet material.
The specific surface area of carbon nanosheet is 2212 m2·g-1, pore volume is 1.21 cm3·g-1
After testing, using the carbon nanosheet as the electrode material of ultracapacitor, specific capacitance is in 6 M KOH electrolyte 308 F·g-1(current density is 1 Ag-1), in the Ag of current density 5-1Under, after 3000 constant current charge-discharge circulations, Specific capacitance retention is 95.6%.
Fig. 2 shows the stereoscan photograph of micropore carbon nanosheet obtained by the present embodiment, shows to add after NaCl templates, Sheet carbon material structure is obtained, thickness is 50 ~ 100 nm.Transmission electron microscope photo(Fig. 3)Further demonstrate and obtain carbon nanometer Chip architecture.
Fig. 4 ~ Fig. 7 contrasts the N for showing Examples 1 and 2 products obtained therefrom2Adsorption-desorption balances defect, pore-size distribution, followed Ring volt-ampere test curve and charging and discharging curve figure, the surface area for showing to add acquisition carbon nanosheet material after NaCl templates reach 2212 m2·g-1, this is far above the specific surface area without the carbon material for adding NaCl templates(927 m2·g-1).High-specific surface area Carbon nanosheet structure result in excellent capacitive property(Fig. 6 and Fig. 7).
Fig. 8 shows that micropore carbon nanosheet is in 5 Ag obtained by the present embodiment-13000 circulation capacitive properties of discharge and recharge, than Electric capacity retention is 95.6%, shows that the material has good electrochemical stability.
Embodiment 3
Weigh 2 g glucose and 8 g NaCl are added in 50 mL deionized waters, at room temperature the min of magnetic agitation 30, then In 100 DEG C of dry 10 h;Mixture after drying is transferred in ceramic crucible, tube furnace is placed in, in N2Under protection, 500 DEG C of carbon Change 2 h;Gained carbon material is immersed in 10 h in 80 DEG C of deionized waters and removes NaCl, filtering, in 100 DEG C of vacuum drying, obtains carbon Nanometer sheet material;Take 1 g carbon nanosheets to stir with 4 g KOH to be sufficiently mixed, tube furnace is placed in, in N2Under protection, 800 DEG C of carbonizations 1 h;Gained carbon material is immersed in 10 h in 0.1 M HCl solutions, filtered, in 100 DEG C of vacuum drying, microporous carbon nanometer is obtained Sheet material.
The specific surface area of carbon nanosheet is 2000 m2·g-1, pore volume is 1.0 cm3·g-1
After testing, using the carbon nanosheet as the electrode material of ultracapacitor, specific capacitance is in 6 M KOH electrolyte 288 F g-1(current density is 1 A g-1), in the A g of current density 5-1Under, after being circulated through 3000, specific capacitance retention For 92.6%.
Embodiment 4
Weigh 2g glucose and 12g NaCl are added in 50 mL deionized waters, at room temperature the min of magnetic agitation 30, then In 100 DEG C of dry 10 h;Mixture after drying is transferred in ceramic crucible, tube furnace is placed in, in N2Under protection, 500 DEG C of carbon Change 2 h;Gained carbon material is immersed in 10 h in 80 DEG C of deionized waters and removes NaCl, filtering, in 100 DEG C of vacuum drying, obtains carbon Nanometer sheet material;Take 1 g carbon nanosheets to stir with 4 g KOH to be sufficiently mixed, tube furnace is placed in, in N2Under protection, 800 DEG C of carbon Change 1 h;Gained carbon material is immersed in 10 h in 0.1 M HCl solutions, filtered, in 100 DEG C of vacuum drying, microporous carbon is obtained and receives Rice sheet material.The specific surface area of carbon nanosheet is 1756 m2·g-1, pore volume is 0.64 cm3·g-1.After testing, with the carbon Nanometer sheet is as the electrode material of ultracapacitor, and specific capacitance is 221 Fg in 6 M KOH electrolyte-1(current density is 1 A· g-1), in the A g of current density 5-1Under, after being circulated through 3000, specific capacitance retention is 80.6%.
From embodiment 1 ~ 4 as can be seen that in identical carbon source(Experiment uses glucose), identical activator(Experiment is adopted Use potassium hydroxide), identical quality proportioning and during identical preparation technology, NaCl templates are added using the present invention and obtain height Specific surface area two dimension carbon nanosheet, and be not added with NaCl templates and then obtain traditional activated carbon;Prepared carbon nanosheet ratio is not added with Activated carbon specific surface area prepared by template is from 927 m2·g-1Increase to 2212 m2·g-1, pore volume is from 0.31 cm3·g-1Increase To 1.21 cm3·g-1.When being used as electrode of super capacitor, capacitor is being 1 A g than electric current-1When, specific capacitance is from 184 F ·g-1Increase to 308 F g-1.Show possess higher specific surface area, pore volume and more preferably using the activated carbon for preparing of the present invention Chemical property.
Embodiment 5
Weigh 2 g sucrose and 4g NaCl are added in 30 mL deionized waters, at room temperature magnetic agitation 10 min, Ran Hou 120 DEG C of 5 h of drying;Mixture after drying is transferred in ceramic crucible, tube furnace is placed in, in N2Under protection, 600 DEG C of carbonizations 1 h;Gained carbon material is immersed in 10 h in 100 DEG C of deionized waters and removes NaCl, filtering, in 120 DEG C of vacuum drying, obtains carbon nanometer Sheet material;Take 1 g carbon nanosheets to stir with 4 g KOH to be sufficiently mixed, tube furnace is placed in, in N2Under protection, 900 DEG C of 1 h of carbonization; Gained carbon material is immersed in 10 h in 1 M HCl solutions, filtered, in 100 DEG C of vacuum drying, microporous carbon nanometer sheet material is obtained. The specific surface area of carbon nanosheet is 2156 m2·g-1, pore volume is 1.16 cm3·g-1.After testing, using the carbon nanosheet as The electrode material of ultracapacitor, specific capacitance is 298 Fg in 6 M KOH electrolyte-1(current density is 1 Ag-1), In the Ag of current density 5-1Under, after being circulated through 3000, specific capacitance retention is 93.6%.
Embodiment 6
Weigh 2g celluloses and 4g NaCl are added in 30 mL deionized waters, at room temperature magnetic agitation 60 min, Ran Hou 120 DEG C of 10 h of drying;Mixture after drying is transferred in ceramic crucible, tube furnace is placed in, in N2Under protection, 550 DEG C of carbonizations 3 h;Gained carbon material is immersed in 10 h in 80 DEG C of deionized waters and removes NaCl, filtering, in 100 DEG C of vacuum drying, obtains carbon nanometer Sheet material;Take 1 g carbon nanosheets to stir with 4 g KOH to be sufficiently mixed, tube furnace is placed in, in N2Under protection, 800 DEG C of 1 h of carbonization; Gained carbon material is immersed in 8 h in 2 M HCl solutions, filtered, in 110 DEG C of vacuum drying, microporous carbon nanometer sheet material is obtained. The specific surface area of carbon nanosheet is 2089 m2·g-1, pore volume is 1.13 cm3·g-1.After testing, using the carbon nanosheet as The electrode material of ultracapacitor, specific capacitance is 287 Fg in 6 M KOH electrolyte-1(current density is 1 Ag-1), In the Ag of current density 5-1Under, after being circulated through 3000, specific capacitance retention is 92.4%.

Claims (4)

1. a kind of preparation method of micropore carbon nanosheet, it is characterised in that:Using water-soluble NaCl inorganic salts as template, glucose, One kind of sucrose or cellulose is carbon source, after high temperature cabonization, and washing removes inorganic salts template, obtains the two of 50 ~ 200 nm thickness Tie up carbon nanosheet;Then activated using KOH, obtain micropore carbon nanosheet;
Specifically include following steps:
(1)The one kind for taking glucose, sucrose or cellulose is carbon source, using water-soluble NaCl inorganic salts as template, is dissolved in deionization In water, 30 ~ 60 min are stirred, in 80 ~ 120 DEG C of drying;
The quality proportioning of the carbon source and NaCl templates is:1:1~1:6;The amount that deionized water is used per 1g carbon sources is 5 ~ 50 mL;
(2)Said mixture is taken, in N2Under protection, then 500 ~ 600 DEG C of 1 ~ 3 h of pre- carbonization remove inorganic salts mould with deionized water Plate, filtering, 80 ~ 120 DEG C of dryings obtain two-dimentional carbon nanosheet;
(3)Carbon nanosheet and KOH are well mixed, in N2Under protection, 700 ~ 900 DEG C of 1 ~ 3 h of activation are removed with 0.1 ~ 2 M HCl Decontamination, filtering, 80 ~ 110 DEG C of dryings obtain final products micropore carbon nanosheet;
The mass ratio of the carbon nanosheet and KOH is 1:1~1:4.
2. the preparation method of micropore carbon nanosheet according to claim 1, it is characterised in that:The carbon nanosheet and KOH Mass ratio be 1:4.
3. the preparation method of micropore carbon nanosheet according to claim 1, it is characterised in that:The micropore carbon nanosheet of gained Specific surface area be 1756 ~ 2212 m2·g-1, pore volume is 0.64 ~ 1.21 cm3·g-1
4. the preparation method of micropore carbon nanosheet according to claim 1, it is characterised in that:The micropore carbon nanosheet of gained As the electrode material of ultracapacitor, its chemical property is evaluated in conventional three-electrode system, platinized platinum is that saturation is sweet to electrode Mercury is reference electrode, and electrolyte is 6 M KOH, is 1 Ag in current density-1When, specific capacitance reaches 221 ~ 308 Fg-1
CN201510948418.XA 2015-12-17 2015-12-17 A kind of preparation method of micropore carbon nanosheet Expired - Fee Related CN105502386B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510948418.XA CN105502386B (en) 2015-12-17 2015-12-17 A kind of preparation method of micropore carbon nanosheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510948418.XA CN105502386B (en) 2015-12-17 2015-12-17 A kind of preparation method of micropore carbon nanosheet

Publications (2)

Publication Number Publication Date
CN105502386A CN105502386A (en) 2016-04-20
CN105502386B true CN105502386B (en) 2017-09-05

Family

ID=55710773

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510948418.XA Expired - Fee Related CN105502386B (en) 2015-12-17 2015-12-17 A kind of preparation method of micropore carbon nanosheet

Country Status (1)

Country Link
CN (1) CN105502386B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106185923A (en) * 2016-07-06 2016-12-07 江苏大学 A kind of inorganic salt template auxiliary method preparing porous carbon nano material and application thereof
CN106185921A (en) * 2016-07-06 2016-12-07 江苏大学 A kind of method and purposes preparing porous carbon materials with NaCl for hard template
CN107473201A (en) * 2017-08-22 2017-12-15 邹远升 A kind of anti-corrosion fused salt material and its preparation method and application
CN109956479A (en) * 2017-12-25 2019-07-02 北京化工大学 A kind of hollow microsphere and preparation method thereof
CN108649242B (en) * 2018-03-21 2020-05-19 南京师范大学 Preparation method of two-dimensional porous Pt nanosheet, material obtained by preparation method and application of material
CN108520828A (en) * 2018-04-02 2018-09-11 桂林电子科技大学 A kind of high-graphitized more hole carbon nanosheet preparation method and application of two dimension
CN110386626B (en) * 2018-04-16 2022-04-19 中国科学技术大学 Cobaltous oxide sheet, preparation method thereof and application thereof in visible light catalytic total decomposition of water
CN108751164B (en) * 2018-05-30 2020-02-07 湘潭大学 Red petal-string-based graphene porous carbon nanosheet and preparation method and application thereof
CN108529596B (en) * 2018-07-20 2021-11-26 广东工业大学 Preparation method of two-dimensional thin-layer carbon
CN108975308A (en) * 2018-08-08 2018-12-11 中国林业科学研究院林产化学工业研究所 A kind of level duct charcoal nanometer sheet and its preparation method and application
CN109647474B (en) * 2018-11-12 2020-10-16 华中科技大学 Nitrogen-doped carbon material, preparation and application thereof
CN109734473B (en) * 2019-03-11 2021-09-28 福州大学 Porous ceramic and preparation method thereof
CN109877342B (en) * 2019-03-26 2020-08-25 中国科学技术大学 Amorphous noble metal nanosheet and preparation method thereof
CN110078051B (en) * 2019-04-30 2020-08-04 济宁学院 Preparation method of carbon nanocage material
US11757097B2 (en) * 2020-01-09 2023-09-12 Purdue Research Foundation Methods for producing functionalized carbon nanosheets and electrochemical energy storage cells with electrodes formed thereof
CN112897526A (en) * 2021-02-05 2021-06-04 西南大学 Preparation method and application of porous carbon dot material based on industrial glucose
CN114093678B (en) * 2021-11-24 2023-07-14 滨州学院 Preparation method of transition metal phosphide nano-sheet electrode material

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8784764B2 (en) * 2008-12-15 2014-07-22 Corning Incorporated Methods for forming activated carbon material for high energy density ultracapacitors
CN104876217B (en) * 2015-06-01 2017-10-10 北京理工大学 A kind of preparation method of graphene

Also Published As

Publication number Publication date
CN105502386A (en) 2016-04-20

Similar Documents

Publication Publication Date Title
CN105502386B (en) A kind of preparation method of micropore carbon nanosheet
Yang et al. Biomass-derived porous carbon materials for supercapacitor
Cai et al. Porous carbon derived from cashew nut husk biomass waste for high-performance supercapacitors
Wu et al. Hierarchical porous carbon microrods derived from albizia flowers for high performance supercapacitors
Zhou et al. Pseudocapacitive deionization of uranium (VI) with WO3/C electrode
Lin et al. KOH activation of biomass-derived nitrogen-doped carbons for supercapacitor and electrocatalytic oxygen reduction
Yang et al. Two-step preparation of hierarchical porous carbon from KOH-activated wood sawdust for supercapacitor
Qiao et al. Humic acids-based hierarchical porous carbons as high-rate performance electrodes for symmetric supercapacitors
Zheng et al. The porous carbon derived from water hyacinth with well-designed hierarchical structure for supercapacitors
Wang et al. Nitrogen-doped porous carbon derived from ginkgo leaves with remarkable supercapacitance performance
CN108630920A (en) A kind of nano-metal-oxide/MXene heterojunction structure composite material and preparation methods
CN103833032A (en) Graphene-based composite cathode material
Huang et al. Mycelial pellet-derived heteroatom-doped carbon nanosheets with a three-dimensional hierarchical porous structure for efficient capacitive deionization
CN110330016A (en) An a kind of step cooperative development method of anthracite-base porous carbon graphite microcrystal and hole
Chen et al. Recent progress in biomass-derived carbon materials used for secondary batteries
CN105152158B (en) The preparation of three-dimensional grapheme hydrogel electrode material and its capacitive deionization application
CN105118688A (en) Preparation and application of bacterial cellulose/active carbon fiber/graphene film material
CN107628597B (en) By using SiO2Method for preparing biomass carbon material with micropore and mesopore structure by coating method
CN109637829A (en) A method of it is crosslinked by sodium alginate and diamine compounds and prepares N doping porous carbon
CN108630453A (en) One-step method prepares the method and application thereof of class graphene carbon nanometer sheet material
CN109110756A (en) Derivative carbon electrode material of a kind of homogeneous corncob and preparation method thereof
Men et al. N-doped porous carbon-based capacitive deionization electrode materials loaded with activated carbon fiber for water desalination applications
CN108892138A (en) One kind is based on biomass derived nitrogen/oxygen codope hierarchical porous structure carbon material and preparation method thereof
CN103832997A (en) Graphene/carbon black composite material, preparation method and application thereof
Xue et al. Exceptional capacitive deionization desalination performance of hollow bowl-like carbon derived from MOFs in brackish water

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170905

Termination date: 20211217