CN106001543A - Method for modifying La-Mg-Ni based hydrogen storage alloy by utilizing Ni-B-C alloy - Google Patents

Method for modifying La-Mg-Ni based hydrogen storage alloy by utilizing Ni-B-C alloy Download PDF

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Publication number
CN106001543A
CN106001543A CN201610401758.5A CN201610401758A CN106001543A CN 106001543 A CN106001543 A CN 106001543A CN 201610401758 A CN201610401758 A CN 201610401758A CN 106001543 A CN106001543 A CN 106001543A
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alloy
ball milling
alloy powder
hydrogen storage
powder
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黄红霞
谢文强
于文婉
王新颖
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Guilin University of Technology
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Guilin University of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14Treatment of metallic powder
    • B22F1/0003
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/04Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C19/00Alloys based on nickel or cobalt
    • C22C19/03Alloys based on nickel or cobalt based on nickel
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/24Alkaline accumulators
    • H01M10/30Nickel accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/38Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/383Hydrogen absorbing alloys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/04Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/041Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
    • 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
    • Y02E60/10Energy storage using batteries

Abstract

The invention discloses a method for modifying a La-Mg-Ni based hydrogen storage alloy by utilizing a Ni-B-C alloy. The method comprises the following steps: preparing the La-Mg-Ni based hydrogen storage alloy and Ni-B-C alloy powder respectively, and then uniformly mixing the La-Mg-Ni based hydrogen storage alloy and the Ni-B-C alloy powder according to a mass ratio; and after the uniform mixing, carrying out ball milling, wherein the ratio of the mixed material in a ball mill to a grinding medium is 20:1, the rotating speed of the ball mill is 150-200 rpm, and the ball milling period is 0.5-1.0 h. Accordingly, the La-Mg-Ni based hydrogen storage alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20 can be modified by utilizing the Ni-B-C alloy. The method disclosed by the invention is simple to operate; after the Ni-B-C alloy powder is added, both the maximum discharge capacity and the capacity retention ratio of an electrode can be improved; and the method has certain practical significance to the development of nickel-metal hydride batteries.

Description

Utilize Ni-B-C Alloy modification La-Mg-Ni The method of base hydrogenous alloy
Technical field
The invention belongs to materials chemistry and electrochemical research field, particularly to a kind of Ni-B-C alloy utilizing ball milling to obtain to La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20The method being modified.
Background technology
Along with the enhancing of people's environmental consciousness, hybrid vehicle will have broader market.In the existing hybrid-power battery market share, 98% is Ni-MH power cell.The negative material of Ni-MH battery is mainly hydrogen bearing alloy, and La-Mg-Ni base hydrogenous alloy has than business-like AB5The unit cell volume that type lanthanon hydrogen storage alloy is bigger, can accommodate more hydrogen and have bigger discharge capacity.La-Mg-Ni base hydrogenous alloy fails to substitute AB5The main cause of type hydrogen storage alloy is that cyclical stability is poor, and this is the difficulty being badly in need of now overcoming.
Research worker is noticed, Co-X (X=B, S, P, Si etc.) amorphous alloy has good chemical property.Researcher, by Co powder and P powder ball milling, makes the negative pole of Ni/MH battery, investigates its chemical property, finds that maximum discharge capacity reaches 300 mAh/g, and after 100 circulations, capability retention is 95%.
The alloy powder of the Ni-B-C that ball-milling method is obtained by the present invention and La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20Ball milling after mixing, is all improved as the negative pole of Ni/MH battery, maximum discharge capacity and cyclical stability in varing proportions.
Summary of the invention
It is an object of the invention to provide one utilizes Ni-B-C alloy to La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20The method being modified.
Thinking of the present invention: use ball milling to obtain Ni-B-C alloy, more by a certain percentage with La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20Ball milling obtains composite alloy, to improve its chemical property so that it is the negative material as Ni-MH battery is more preferably applied.
Concretely comprise the following steps:
(1) according to hydrogen bearing alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20Mol ratio weigh purity raw metal more than 99%, under argon shield, prepare hydrogen bearing alloy by vacuum induction melting method, will grind after ingot overturning remelting 2 ~ 3 times, cross 200 mesh sieves, prepare La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
(2) in 500 mL distilled water, 15 g NiCl are added2·6H2O, under 95 DEG C of magnetic agitation, the NaBH of dropping 100 ~ 200 mL 0.1 mol/L4Solution, products therefrom absolute ethanol washing 2 times, under the conditions of 75 DEG C, it is dried 5 h obtains Ni-B alloy powder, it is that 6:4 mix homogeneously with graphite powder according to mass ratio by Ni-B alloy powder, rotating speed ball milling 5 ~ 10 h with 200 ~ 400 rpm, ball milling, than for 10:1 or 20:1, i.e. prepares Ni-B-C alloy powder.
(3) the La-Mg-Ni base hydrogenous alloy La that step (1) is prepared0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20The Ni-B-C alloy powder prepared with step (2) is according to ball milling after mass ratio mix homogeneously, ratio of grinding media to material is 20:1, drum's speed of rotation is 150 ~ 200 rpm, Ball-milling Time 0.5 ~ 1.0 h, i.e. realizes utilizing Ni-B-C alloy modification La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
Described mass ratio is 9:1,8.5:1.5 or 8:2.
The Ni-B-C alloy powder that ball milling is obtained by the inventive method by ball milling adds hydrogen bearing alloy La to0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20In, simple to operate, and after interpolation Ni-B-C alloy powder, maximum discharge capacity and the capability retention of electrode are all improved, and the development to Ni-MH battery has certain realistic meaning.
Detailed description of the invention
Embodiment 1 :
(1) according to hydrogen bearing alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20Mol ratio weigh the raw metal that purity is 99.9%, under argon shield, prepare hydrogen bearing alloy by vacuum induction melting method, will grind after ingot overturning remelting 3 times, cross 200 mesh sieves, prepare La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
(2) in 500 mL distilled water, 15 g NiCl are added2·6H2O, under 95 DEG C of magnetic agitation, drips the NaBH of 100 mL 0.1 mol/L4Solution, products therefrom absolute ethanol washing 2 times, under the conditions of 75 DEG C, it is dried 5 h obtains Ni-B alloy powder, it is that 6:4 mix homogeneously with graphite powder according to mass ratio by Ni-B alloy powder, with rotating speed ball milling 10 h of 200 rpm, ball milling, than for 10:1, i.e. prepares Ni-B-C alloy powder.
(3) the La-Mg-Ni base hydrogenous alloy La that step (1) is prepared0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20The Ni-B-C alloy powder prepared with step (2) is 20:1 according to ball milling after mass ratio 9:1 mix homogeneously, ratio of grinding media to material, and drum's speed of rotation is 150 rpm, Ball-milling Time 1.0 h, i.e. realizes utilizing Ni-B-C alloy modification La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
Embodiment 2 :
(1) according to hydrogen bearing alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20Mol ratio weigh the raw metal that purity is 99.9%, under argon shield, prepare hydrogen bearing alloy by vacuum induction melting method, will grind after ingot overturning remelting 3 times, cross 200 mesh sieves, prepare La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
(2) in 500 mL distilled water, 15 g NiCl are added2·6H2O, under 95 DEG C of magnetic agitation, drips the NaBH of 200 mL 0.1 mol/L4Solution, products therefrom absolute ethanol washing 2 times, under the conditions of 75 DEG C, it is dried 5 h obtains Ni-B alloy powder, it is that 6:4 mix homogeneously with graphite powder according to mass ratio by Ni-B alloy powder, with rotating speed ball milling 5 h of 400 rpm, ball milling, than for 20:1, i.e. prepares Ni-B-C alloy powder.
(3) the La-Mg-Ni base hydrogenous alloy La that step (1) is prepared0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20The Ni-B-C alloy powder prepared with step (2) is according to ball milling after mass ratio 8.5:1.5 mix homogeneously, ratio of grinding media to material is 20:1, drum's speed of rotation is 200 rpm, Ball-milling Time 0.5 h, i.e. realizes utilizing Ni-B-C alloy modification La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
Embodiment 3 :
(1) according to hydrogen bearing alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20Mol ratio weigh the raw metal that purity is 99.9%, under argon shield, prepare hydrogen bearing alloy by vacuum induction melting method, will grind after ingot overturning remelting 2 times, cross 200 mesh sieves, prepare La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
(2) in 500 mL distilled water, 15 g NiCl are added2·6H2O, under 95 DEG C of magnetic agitation, drips the NaBH of 150 mL 0.1 mol/L4Solution, products therefrom absolute ethanol washing 2 times, under the conditions of 75 DEG C, it is dried 5 h obtains Ni-B alloy powder, it is that 6:4 mix homogeneously with graphite powder according to mass ratio by Ni-B alloy powder, with rotating speed ball milling 7.5 h of 300 rpm, ball milling, than for 20:1, i.e. prepares Ni-B-C alloy powder.
(3) the La-Mg-Ni base hydrogenous alloy La that step (1) is prepared0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20The Ni-B-C alloy powder prepared with step (2) is 20:1 according to ball milling after mass ratio 8:2 mix homogeneously, ratio of grinding media to material, and drum's speed of rotation is 200 rpm, Ball-milling Time 0.5 h, i.e. realizes utilizing Ni-B-C alloy modification La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
Measure cyclical stability and the dynamic performance of above-described embodiment modified alloy respectively with LAND 5.3B battery test system and CHI 660E electrochemical workstation, result is as follows:
(1) maximum discharge capacity of unmodified alloy electrode is 346 mAh/g, after itself and Ni-B-C alloy powder are according to the ratio ball-milling of 9:1,8.5:1.5,8:2, the electrode maximum discharge capacity obtained is respectively increased 363 mAh/g, 366 mAh/g and 360 mAh/g.
The 70% of the capability retention never modified electrode of (2) 50 circulation rear electrodes increases to 77%, 75% and 77%.

Claims (1)

1. the method utilizing Ni-B-C alloy modification La-Mg-Ni base hydrogenous alloy, it is characterised in that concretely comprise the following steps:
(1) according to hydrogen bearing alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20Mol ratio weigh purity raw metal more than 99%, under argon shield, prepare hydrogen bearing alloy by vacuum induction melting method, will grind after ingot overturning remelting 2 ~ 3 times, cross 200 mesh sieves, prepare La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
(2) in 500 mL distilled water, 15 g NiCl are added2·6H2O, under 95 DEG C of magnetic agitation, drips 100 ~ 200 The NaBH of mL 0.1 mol/L4Solution, products therefrom absolute ethanol washing 2 times, under the conditions of 75 DEG C, it is dried 5 h obtains Ni-B alloy powder, it is that 6:4 mix homogeneously with graphite powder according to mass ratio by Ni-B alloy powder, rotating speed ball milling 5 ~ 10 h with 200 ~ 400 rpm, ball milling, than for 10:1 or 20:1, i.e. prepares Ni-B-C alloy powder;
(3) the La-Mg-Ni base hydrogenous alloy La that step (1) is prepared0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20The Ni-B-C alloy powder prepared with step (2) is according to ball milling after mass ratio mix homogeneously, and ratio of grinding media to material is 20:1, and drum's speed of rotation is 150 ~ 200 Rpm, Ball-milling Time 0.5 ~ 1.0 h, i.e. realize utilizing Ni-B-C alloy modification La-Mg-Ni base hydrogenous alloy La0.94Mg0.06Ni3.49Co0.73Mn0.12Al0.20
Described mass ratio is 9:1,8.5:1.5 or 8:2.
CN201610401758.5A 2016-06-09 2016-06-09 Method for modifying La-Mg-Ni based hydrogen storage alloy by utilizing Ni-B-C alloy Pending CN106001543A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108493436A (en) * 2018-03-09 2018-09-04 燕山大学 Ni-based quaternary hydrogen-storing alloy electrode material of a kind of super stacking provisions lanthanum-M-magnesium-of 2H types A5B19 and preparation method thereof
CN110492086A (en) * 2019-09-09 2019-11-22 燕山大学 A kind of preparation method of hydrogen storing alloy composite material

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1794496A (en) * 2005-10-27 2006-06-28 天津大学 Hydrogen storage alloy powder surface cladded with nickel boron alloy and its preparation method
US20080009640A1 (en) * 2005-10-24 2008-01-10 Wei Li Supported amorphous ni-b alloy catalyst, its preparation and use
CN101307395A (en) * 2008-07-14 2008-11-19 西北有色金属研究院 Method for preparing amorphous state NiB hydrogen occluding alloy electrode
CN102091623A (en) * 2009-12-11 2011-06-15 国家纳米技术与工程研究院 NiB amorphous alloy and preparation method thereof
CN102560290A (en) * 2010-12-24 2012-07-11 国家纳米技术与工程研究院 Nano nickel boride (NiB) amorphous alloy and preparation method thereof
CN104846224A (en) * 2015-05-17 2015-08-19 桂林理工大学 Method for performing surface modification on AB3-type hydrogen storage alloy by utilization of graphene
CN104862514A (en) * 2015-05-17 2015-08-26 桂林理工大学 Surface modifying method of AB3 type hydrogen storage alloy
CN105148922A (en) * 2015-09-29 2015-12-16 河北大学 NiB amorphous alloy catalyst and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080009640A1 (en) * 2005-10-24 2008-01-10 Wei Li Supported amorphous ni-b alloy catalyst, its preparation and use
CN1794496A (en) * 2005-10-27 2006-06-28 天津大学 Hydrogen storage alloy powder surface cladded with nickel boron alloy and its preparation method
CN101307395A (en) * 2008-07-14 2008-11-19 西北有色金属研究院 Method for preparing amorphous state NiB hydrogen occluding alloy electrode
CN102091623A (en) * 2009-12-11 2011-06-15 国家纳米技术与工程研究院 NiB amorphous alloy and preparation method thereof
CN102560290A (en) * 2010-12-24 2012-07-11 国家纳米技术与工程研究院 Nano nickel boride (NiB) amorphous alloy and preparation method thereof
CN104846224A (en) * 2015-05-17 2015-08-19 桂林理工大学 Method for performing surface modification on AB3-type hydrogen storage alloy by utilization of graphene
CN104862514A (en) * 2015-05-17 2015-08-26 桂林理工大学 Surface modifying method of AB3 type hydrogen storage alloy
CN105148922A (en) * 2015-09-29 2015-12-16 河北大学 NiB amorphous alloy catalyst and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108493436A (en) * 2018-03-09 2018-09-04 燕山大学 Ni-based quaternary hydrogen-storing alloy electrode material of a kind of super stacking provisions lanthanum-M-magnesium-of 2H types A5B19 and preparation method thereof
CN110492086A (en) * 2019-09-09 2019-11-22 燕山大学 A kind of preparation method of hydrogen storing alloy composite material
CN110492086B (en) * 2019-09-09 2021-01-26 燕山大学 Preparation method of hydrogen storage alloy composite material

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