CN109841825A - A kind of method that tin prepares lithium ion battery negative material in recycling electroplating sludge - Google Patents
A kind of method that tin prepares lithium ion battery negative material in recycling electroplating sludge Download PDFInfo
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- CN109841825A CN109841825A CN201910248282.XA CN201910248282A CN109841825A CN 109841825 A CN109841825 A CN 109841825A CN 201910248282 A CN201910248282 A CN 201910248282A CN 109841825 A CN109841825 A CN 109841825A
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- electroplating sludge
- lithium ion
- ion battery
- battery negative
- negative material
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- 239000010802 sludge Substances 0.000 title claims abstract description 55
- 238000009713 electroplating Methods 0.000 title claims abstract description 51
- 239000000463 material Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 25
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 33
- 241000894006 Bacteria Species 0.000 claims abstract description 28
- 229920002678 cellulose Polymers 0.000 claims abstract description 27
- 239000001913 cellulose Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000012153 distilled water Substances 0.000 claims abstract description 11
- 230000010355 oscillation Effects 0.000 claims abstract description 11
- 239000002243 precursor Substances 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 238000000746 purification Methods 0.000 claims abstract description 7
- 239000012298 atmosphere Substances 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000003837 high-temperature calcination Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 3
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 3
- GFLJTEHFZZNCTR-UHFFFAOYSA-N 3-prop-2-enoyloxypropyl prop-2-enoate Chemical compound C=CC(=O)OCCCOC(=O)C=C GFLJTEHFZZNCTR-UHFFFAOYSA-N 0.000 claims abstract 3
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 claims abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000004108 freeze drying Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 6
- 239000000835 fiber Substances 0.000 claims 1
- 239000011259 mixed solution Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 229910052718 tin Inorganic materials 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002733 tin-carbon composite material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 230000022131 cell cycle Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- -1 metals ions Chemical class 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PZNOBXVHZYGUEX-UHFFFAOYSA-N n-prop-2-enylprop-2-en-1-amine;hydrochloride Chemical compound Cl.C=CCNCC=C PZNOBXVHZYGUEX-UHFFFAOYSA-N 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000008104 plant cellulose Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention belongs to Electroplating Sludge Technology field, a kind of method that tin prepares lithium ion battery negative material in recycling electroplating sludge is disclosed.Inorganic alkali solution is added in electroplating sludge, after mixing evenly hydro-thermal reaction after drying and grinding is sieved, electroplating sludge purification liquid is obtained by filtration；Bacteria cellulose is added in PDDA solution, oscillation uses distilled water rinse after being stirred, and obtains modified bacteria cellulose；Gained modified bacteria cellulose is added in electroplating sludge purification liquid, is stirred, is washed out and is dried to obtain composite material precursor, finally the high-temperature calcination under inertia or reducing atmosphere, obtain Sn@C lithium cell negative pole material.Preparation method of the invention not only solves the environmental problem of electroplating sludge, and prepares high-valued lithium ion battery negative material using the unique pattern of inner bacteria cellulose, to realize that turning waste into wealth for Environmental waste provides feasible thinking.
Description
Technical field
The invention belongs to Electroplating Sludge Technology fields, and in particular to tin prepares lithium ion in a kind of recycling electroplating sludge
The method of cell negative electrode material.
Background technique
Electroplating sludge has unstability, migration is strong, the feature more than water content, mainly as one of danger wastes
Contain the metal ions such as Sn, Fe, Cu, Ni, Cr, Cd.And all there is difference in various electroplating sludges caused by different types of plating
Not, it also has nothing in common with each other for different metal ion treatment methods.Electroplating sludge is broadly divided into two classes, one is sub-prime sludge,
Institute's metal ion is single, and such sludge is more easy to be recycled；It is another then be mixing sludge, ingredient is more complex, metal
Ionic species is more, and there are also Cr, the hazardous metals ions such as Cd to bring extreme difficulties for post-processing disposition and separation for some.Sn is wide
It is general to be used for electroplating industry, the one kind recycled is difficult in one of primary metal ion as electroplating sludge and sludge.Mesh
The preceding electroplating sludge processing method generally used mainly has: curing agent processing, heat treatment, thermal process, wet processing, acid system leaching
Out, ammonia process leaches, biological treatment etc., also needs to carry out for leachate or solid waste product after above-mentioned processing method
Processing disposition.Therefore it is highly important for developing new electroplating sludge processing method.
Summary of the invention
In place of the above shortcoming and defect of the existing technology, the purpose of the present invention is to provide a kind of recycling plating
The method that tin prepares lithium ion battery negative material in sludge.The method of the present invention by electroplating sludge higher value application, not only without
Evilization processing electroplating sludge provides new thinking, also provides new idea for preparation electrochemical energy storage materials.
The object of the invention is achieved through the following technical solutions:
A kind of method that tin prepares lithium ion battery negative material in recycling electroplating sludge, including following preparation step:
(1) inorganic alkali solution is added in electroplating sludge, after mixing evenly hydro-thermal reaction after drying and grinding is sieved, filtered
Liquid is purified to electroplating sludge；
(2) bacteria cellulose is added in PDDA (polydimethyl diallyl ammonium chloride) solution, oscillation is stirred
Distilled water rinse is used afterwards, obtains modified bacteria cellulose；
(3) modified bacteria cellulose obtained by step (2) is added in the electroplating sludge purification liquid of step (1), stirring is mixed
It closes, is washed out and is dried to obtain composite material precursor；
(4) by composite material precursor high-temperature calcination under inertia or reducing atmosphere obtained by step (3), Sn@C lithium is obtained
Cell negative pole material.
Further, drying and grinding sieving refers to 90 DEG C of dry 12h, ground 200 mesh in step (1).
Further, in step (1) inorganic alkali solution be concentration be 0.1~3mol/L sodium hydroxide, potassium hydroxide or
Lithium hydroxide solution.
Further, hydrothermal temperature is 150~230 DEG C in step (1), and the time is 12~18h.
Further, the additional amount of bacteria cellulose is 0.1~3g/L in step (2).
Further, the mass concentration of PDDA solution is 1%~10% in step (2).
Further, the time that oscillation is stirred in step (2) is 0.5~2h.
Further, the time being stirred in step (3) is 1~48h.
Further, the solution of washing described in step (3) is the mixing of one or both of distilled water, dehydrated alcohol
Solution.
Further, dry described in step (3) is at least one of constant pressure and dry, vacuum drying, freeze-drying.
Further, inertia described in step (4) or reducing atmosphere be nitrogen, argon gas, in hydrogen any one or
Two or more mixed atmospheres.
Further, high-temperature calcination described in step (4) refer to be warming up to 500 with the heating rate of 1~10 DEG C/min~
900 DEG C of 1~10h of calcining.
Compared with prior art, the invention has the following advantages and beneficial effects:
(1) for the bacteria cellulose that uses of the present invention as a kind of nano-fiber materials, preparation is simple, purity is high and
Without containing the lignin and hemicellulose in plant cellulose, crystallinity is high, is in special hyperfine nanometer three in configuration aspects
Tie up reticular structure；Carbon skeleton after being carbonized using bacteria cellulose can carry out tin particles as the carrier of tin micro-nano particle
Cladding prevents Sn metal micro-nano particle to reduce the mechanical stress that Sn metal generates in charge and discharge process to a certain extent
Reunion improve the cyclical stability of material to guarantee that material is not destroyed；Bacteria cellulose itself has excellent simultaneously
Mechanical property can bring buffer function during charge and discharge for tin particles, and acquired material has superior circulation steady
Qualitative and higher capacity, is able to satisfy the demand of Vehicles Collected from Market.
(2) the part graphite alkylene after calcination at high temperature of the bacteria cellulose in composite material prepared by the present invention, is conducive to
The transfer and diffusion of Li ion.
(3) present invention is by industrial waste electroplating sludge higher value application, and can solve environmental problem.
(4) preparation method simple process of the present invention, easy to operate, easily controllable.
Detailed description of the invention
Fig. 1 is the XRD diagram of the Sn@C composite prepared in embodiment 1；
Fig. 2 is the SEM figure of the Sn@C composite prepared in embodiment 1；
Fig. 3 is that the composite material prepared in embodiment 2 is assembled into button cell cycle performance when current density is 1A/g
Figure；
Fig. 4 is the Raman spectrogram of the composite material prepared in embodiment 2；
Fig. 5 is that the composite material prepared in embodiment 3 is assembled into button cell cyclicity when current density is 0.1A/g
It can figure；
Fig. 6 is that the composite material prepared in embodiment 3 is assembled into high rate performance of the button cell under different current densities
Figure.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment 1
(1) electroplating sludge purifies liquid: electroplating sludge being placed in baking oven, 90 DEG C, 12 hours dry, grinding crosses 200
Mesh sieve.50ml 0.7mol/L sodium hydroxide, 150 DEG C of hydro-thermal 48h, filtering gained is added in electroplating sludge after taking 10g dry
Filtrate is that electroplating sludge purifies liquid.
(2) bacteria cellulose is modified: 100mg bacteria cellulose being added in 1wt.%PDDA solution, with 200rpm rate
Oscillation stirring 1h, then uses distilled water rinse three times, obtains modified bacteria cellulose；
(3) modified bacteria cellulose is added in 50ml electroplating sludge purification liquid, oscillation is stirred for 24 hours.
(4) freeze-drying obtains composite material precursor after above-mentioned the rinse of composite material distilled water three times.
(5) composite material precursor is warming up to 600 DEG C of calcining 2h in a nitrogen atmosphere with the heating rate of 5 DEG C/min,
It is cooling to obtain Sn C composite.
The physical and chemical performance characterization of composite material made from the present embodiment is shown in that Fig. 1 and Fig. 2, Fig. 1 are the Sn@C composite woods prepared
The XRD spectrum of material, Fig. 2 are the SEM figures of the Sn@C composite prepared.
XRD shows in the Sn@C composite of this method preparation that SEM shows that the pattern of composite material is good there are simple substance tin
Good, tin particles are evenly distributed in the three-dimensional net structure of bacteria cellulose.
Embodiment 2
(1) electroplating sludge purifies liquid: electroplating sludge being placed in baking oven, 90 DEG C, 12 hours dry, grinding crosses 200
Mesh sieve.50ml 1.0mol/L sodium hydroxide, 230 DEG C of hydro-thermal 48h, filtering gained is added in electroplating sludge after taking 10g dry
Filtrate is that electroplating sludge purifies liquid.
(2) bacteria cellulose is modified: 100mg bacteria cellulose being added in 2%PDDA solution, with 150rpm rate oscillation
2h is stirred, is then used distilled water rinse three times；
(3) modified bacteria cellulose is added in 50ml electroplating sludge purification liquid, oscillation is stirred for 24 hours.
(4) freeze-drying obtains composite material precursor after above-mentioned the rinse of composite material distilled water three times.
(5) composite material precursor is warming up to 700 DEG C of calcining 2h in a nitrogen atmosphere with the heating rate of 1 DEG C/min,
It is cooling to obtain Sn C composite.
The present embodiment products therefrom is assembled into button cell and tests its discharge capacity, and charge and discharge is carried out within the scope of 0.01-3V
Electricity.Current density is illustrated in figure 3 as the test of 1A/g long circulating stability.Meanwhile composite material can be stablized and be recycled to 2000
It is more than circle.The physical and chemical performance characterization of Sn@C composite obtained is shown in that Fig. 4, Fig. 4 are the Raman numbers of the Sn@C composite prepared
According to Fig. 4 shows the part graphene in high-temperature annealing process of the bacteria cellulose in composite material, this is conducive to lithium ion
Diffusion, facilitates the raising of material specific capacity.
Embodiment 3
(1) electroplating sludge purifies liquid: electroplating sludge being placed in baking oven, 90 DEG C, 12 hours dry, grinding crosses 200
Mesh sieve.Electroplating sludge after taking 10g dry, is added 50ml 1.5mol/L sodium hydroxide, and 200 DEG C of hydro-thermals for 24 hours, filter gained
Filtrate is that electroplating sludge purifies liquid.
(2) bacteria cellulose is modified: 250mg bacteria cellulose being added in 5%PDDA solution, with 200rpm rate oscillation
0.5h is stirred, is then used distilled water rinse three times；
(3) modified bacteria cellulose is added in 50ml electroplating sludge purification liquid, oscillation is stirred 12h.
(4) freeze-drying obtains composite material precursor after above-mentioned the rinse of composite material distilled water three times.
(5) composite material precursor is warming up to 700 DEG C of calcining 2h in a nitrogen atmosphere with the heating rate of 10 DEG C/min,
It is cooling to obtain Sn C composite.
Sn@C composite obtained by the present embodiment is assembled into button cell and tests its charge/discharge capacity, in 0.01-3V model
Enclose interior progress cycle life test.Fig. 5 is the cyclical stability test chart of composite material.It is illustrated in figure 6 obtained button electricity
High rate performance of the pond under different current densities, as can be seen from the figure this Sn@C composite has superior high rate performance.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of method that tin prepares lithium ion battery negative material in recycling electroplating sludge, it is characterised in that including preparing as follows
Step:
(1) inorganic alkali solution is added in electroplating sludge, after mixing evenly hydro-thermal reaction after drying and grinding is sieved, electricity is obtained by filtration
It plates sludge and purifies liquid；
(2) bacteria cellulose is added in PDDA solution, oscillation uses distilled water rinse after being stirred, and obtains modified bacteria fibre
Dimension element；
(3) modified bacteria cellulose obtained by step (2) is added in the electroplating sludge purification liquid of step (1), is stirred, so
Washing is dried to obtain composite material precursor afterwards；
(4) by composite material precursor high-temperature calcination under inertia or reducing atmosphere obtained by step (3), it is negative to obtain Sn@C lithium electricity
Pole material.
2. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: drying and grinding sieving refers to 90 DEG C of dry 12h, ground 200 mesh in step (1).
3. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: inorganic alkali solution is sodium hydroxide, potassium hydroxide or the lithium hydroxide that concentration is 0.1~3mol/L in step (1)
Solution.
4. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: hydrothermal temperature is 150~230 DEG C in step (1), and the time is 12~18h.
5. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: the additional amount of bacteria cellulose is 0.1~3g/L in step (2)；The mass concentration of PDDA solution be 1%~
10%.
6. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: the time that oscillation is stirred in step (2) is 0.5~2h；The time being stirred in step (3) be 1~
48h。
7. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: the solution of washing described in step (3) is the mixed solution of one or both of distilled water, dehydrated alcohol.
8. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: dry described in step (3) is at least one of constant pressure and dry, vacuum drying, freeze-drying.
9. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: inertia described in step (4) or reducing atmosphere be nitrogen, argon gas, in hydrogen any one or it is two or more
Mixed atmosphere.
10. the method that tin prepares lithium ion battery negative material in a kind of recycling electroplating sludge according to claim 1,
Be characterized in that: high-temperature calcination described in step (4), which refers to, is warming up to 500~900 DEG C of calcinings with the heating rate of 1~10 DEG C/min
1~10h.
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|---|---|---|---|
| CN201910248282.XA CN109841825B (en) | 2019-03-29 | 2019-03-29 | Method for preparing lithium ion battery cathode material by recycling tin in electroplating sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114634181A (en) * | 2022-02-21 | 2022-06-17 | 华南理工大学 | Lithium-sulfur battery positive electrode material prepared by recycling iron in electroplating sludge and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114634181A (en) * | 2022-02-21 | 2022-06-17 | 华南理工大学 | Lithium-sulfur battery positive electrode material prepared by recycling iron in electroplating sludge and preparation method thereof |
| CN114634181B (en) * | 2022-02-21 | 2023-06-16 | 华南理工大学 | Lithium-sulfur battery positive electrode material prepared by recycling iron in electroplating sludge and preparation method thereof |
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