CN103041803A - Preparation method of lithium air battery platinum-based catalyst - Google Patents
Preparation method of lithium air battery platinum-based catalyst Download PDFInfo
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- CN103041803A CN103041803A CN2012105173116A CN201210517311A CN103041803A CN 103041803 A CN103041803 A CN 103041803A CN 2012105173116 A CN2012105173116 A CN 2012105173116A CN 201210517311 A CN201210517311 A CN 201210517311A CN 103041803 A CN103041803 A CN 103041803A
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Abstract
The invention discloses a simple and cheap preparation method of a lithium air battery platinum-based catalyst. The method comprises the following steps of: fully stirring and uniformly mixing a solution of a platinum (and alloy components thereof) compound and a carbon carrier firstly; then preparing dry powder by using a spray drying technology; and then reducing the dry powder under mild heating conditions in a hydrogen atmosphere. Active components of the prepared catalyst are uniformly distributed on the carbon carrier and have excellent performance for related electrocatalysis reaction of lithium air batteries. According to the method, the operation is simple without filtering and washing, and only a small amount of cheap chemical medicines are consumed, so that the lithium air battery platinum-based catalyst is very suitable for industrial large-scale production.
Description
Technical field
The present invention relates to a kind of preparation method of eelctro-catalyst, particularly a kind of preparation method of the platinum based catalyst for lithium-air battery.
Background technology
Lithium-air battery has specific energy and specific power is large and system gently waits outstanding advantages, is the battery technology of present acknowledged tool application prospect, particularly has huge application prospect in fields such as electric automobile and portable electric appts.
Yet owing to the restriction of catalyst performance, the lithium-air battery performance also has certain distance from commercialization at present.At present performance is best is that the Pt of charcoal load is catalyst based, the catalyst based feature of these Pt be granularity be several nanometers the Pt high dispersive be carried on have high conductivity, on the high-ratio surface, erosion-resisting charcoal carrier; In the alloy catalysts such as PtAu/C, except the feature of noble metal high dispersive, also require Pt and Au to form the uniform alloy of microcosmic.Although the existing many reports of the preparation method of these catalyst, operation is all complicated, and cost is higher.Wherein the most representative is preparation method (the J.Electroanal. Chem. of the PtRu/C of the report such as Watanabe, 1987,229:395), although this method can obtain the PtRu/C(granularity 3～4nm) of high dispersive, but operating procedure complicated difficult control, chemical consumption is many, and the isolated by filtration of nano-powder is very difficult, consuming time, and washing process also causes precious metal to run off easily.
Summary of the invention
Purpose of the present invention provides a kind of preparation method of lithium-air battery platinum based catalyst, and this method is simple to operate, need not filtration and the washing procedure of difficulty, to overcome the prior art deficiency.
Technical scheme provided by the invention is:
A kind of preparation method of lithium-air battery platinum based catalyst, solution and the charcoal carrier of the compound of platinum or platinum base alloy component are mixed, then under 50 ℃～l60 ℃, utilize spray drying technology, comprise spray pyrolysis drying and atomizing freeze drying, obtain the dry powder body; Gained dry powder body is reduced to metal or alloy as reducing agent with the carbon surface metallic compound with hydrogen at 100 ℃～300 ℃, namely gets platinum based catalyst of the present invention.
The compound of described platinum alloy component is Au, Ag, Ir, Ru, Pd, Os, Rh, the soluble compound of Ta element.
The solution of the compound of described platinum is take acetone, dimethyl formamide, 1-METHYLPYRROLIDONE, dimethyl sulfoxide (DMSO) or lower alcohol as solvent.
Described lower alcohol is methyl alcohol, ethanol, propyl alcohol, ethylene glycol or isopropyl alcohol.
The active component of gained catalyst of the present invention is evenly distributed at the charcoal carrier, and lithium-air battery associated electrical catalytic reaction is had excellent performance.This method is simple to operate, need not to filter and washing, only consumes a small amount of cheap chemicals, is fit to very much industrial large-scale production.
The specific embodiment
Adopt method of the present invention to prepare the lithium-air battery platinum based catalyst: the charcoal carrier (such as the VulcanXC-72 of Carbot company) with the solution of the compound of platinum or platinum base alloy component and high-ratio surface, high conductivity mixes first, under 40～160 ℃ temperature, utilize spray drying technology to make the dry powder body, again prepared dry powder body is reduced to metal or alloy as reducing agent with the platinum of carbon surface or the compound of its alloying element with hydrogen under 100～300 ℃, namely gets required platinum based catalyst.
Embodiment 1
With 10g H
2PtC1
6With 25g HAuCl
4Be dissolved in 100g ethanol, add 150g carbon black (the Vulcan XC-72 of Carbot company) and also fully stir and evenly mix; 80 ℃ of lower spray-dryings; Gained dry powder body gets required PtAu/C catalyst 180 ℃ of lower hydrogen reducing 0.5 hours of using.The catalyst of gained is applied to lithium-air battery, and energy conversion efficiency is 90%.
Embodiment 2
With 30g H
2PtC1
6With 20g RuCl
3Be dissolved in the 100ml isopropyl alcohol, add 200g carbon black (the Vulcan XC-72 of Carbot company) and also fully stir and evenly mix; 90 ℃ of spray-dryings; Gained dry powder body gets required PtRu/C catalyst 150 ℃ of lower hydrogen reducing 1 hours of using.The catalyst of gained is applied to lithium-air battery, and energy conversion efficiency is 87%.
Embodiment 3
With 8g H
2PtC1
6With 10g AgNO
3Be dissolved in the 100ml dimethyl formamide, add 200g carbon black (the Vulcan XC-72 of Carbot company) and also fully stir and evenly mix; 90 ℃ of spray-dryings; Gained dry powder body gets required PtAg/C catalyst 120 ℃ of lower hydrogen reducing 1.5 hours of using.The catalyst of gained is applied to lithium-air battery, and energy conversion efficiency is 85%.
Claims (4)
1. the preparation method of a lithium-air battery platinum based catalyst, it is characterized in that: solution and the charcoal carrier of the compound of platinum or platinum alloy component are mixed, under 50 ℃～160 ℃, utilize spray drying technology, comprise that vacuum spraying pyrolysis drying and vacuum spraying freeze drying obtain the dry powder body, again gained dry powder body is reduced to metal or alloy as reducing agent with the carbon surface metallic compound with hydrogen at 100 ℃～300 ℃, namely gets required platinum based catalyst.
2. according to the preparation method of the described a kind of lithium-air battery platinum based catalyst of claim l, it is characterized in that: the compound of described platinum alloy component is Au, Ag, Ir, Ru, Pd, Os, Rh, the soluble compound of Ta element.
3. according to the preparation method of the described a kind of lithium-air battery platinum based catalyst of claim l, it is characterized in that: the solution of the compound of described platinum or platinum alloy component thinks that acetone, dimethyl formamide, 1-METHYLPYRROLIDONE, dimethyl sulfoxide (DMSO) or lower alcohol are solvent.
4. the preparation method of a kind of lithium-air battery platinum based catalyst according to claim 3, it is characterized in that: described lower alcohol is methyl alcohol, ethanol, propyl alcohol, ethylene glycol or isopropyl alcohol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105173116A CN103041803A (en) | 2012-12-05 | 2012-12-05 | Preparation method of lithium air battery platinum-based catalyst |
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| CN2012105173116A CN103041803A (en) | 2012-12-05 | 2012-12-05 | Preparation method of lithium air battery platinum-based catalyst |
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| CN103041803A true CN103041803A (en) | 2013-04-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106457210A (en) * | 2014-03-18 | 2017-02-22 | 巴斯夫欧洲公司 | A process for the production of a carbon supported catalyst |
| CN107088415A (en) * | 2017-04-10 | 2017-08-25 | 南京大学 | A kind of preparation method of platinum alloy nanometer powder catalyst |
| CN110931815A (en) * | 2019-12-05 | 2020-03-27 | 中船重工黄冈贵金属有限公司 | Preparation method of fuel cell carbon-supported platinum-based catalyst |
| CN111755707A (en) * | 2020-07-02 | 2020-10-09 | 无锡威孚高科技集团股份有限公司 | Preparation method of platinum-cobalt alloy catalyst |
Citations (3)
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|---|---|---|---|---|
| CN1601788A (en) * | 2004-10-08 | 2005-03-30 | 中国科学院长春应用化学研究所 | Method of preparing anode catalyst for direct methyl alcohol fuel cell |
| CN101182207A (en) * | 2007-11-16 | 2008-05-21 | 北京矿冶研究总院 | Spraying powder containing yttrium oxide and preparation method thereof |
| US20120121821A1 (en) * | 2008-06-18 | 2012-05-17 | Board Of Trustees Of The University Of Arkansas | Renewable resource-based metal-containing materials and applications of the same |
-
2012
- 2012-12-05 CN CN2012105173116A patent/CN103041803A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601788A (en) * | 2004-10-08 | 2005-03-30 | 中国科学院长春应用化学研究所 | Method of preparing anode catalyst for direct methyl alcohol fuel cell |
| CN101182207A (en) * | 2007-11-16 | 2008-05-21 | 北京矿冶研究总院 | Spraying powder containing yttrium oxide and preparation method thereof |
| US20120121821A1 (en) * | 2008-06-18 | 2012-05-17 | Board Of Trustees Of The University Of Arkansas | Renewable resource-based metal-containing materials and applications of the same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106457210A (en) * | 2014-03-18 | 2017-02-22 | 巴斯夫欧洲公司 | A process for the production of a carbon supported catalyst |
| CN106457210B (en) * | 2014-03-18 | 2019-11-26 | 巴斯夫欧洲公司 | The method for preparing catalysts supported on carbon |
| CN107088415A (en) * | 2017-04-10 | 2017-08-25 | 南京大学 | A kind of preparation method of platinum alloy nanometer powder catalyst |
| CN107088415B (en) * | 2017-04-10 | 2020-05-08 | 南京大学 | Preparation method of platinum alloy nano powder catalyst |
| CN110931815A (en) * | 2019-12-05 | 2020-03-27 | 中船重工黄冈贵金属有限公司 | Preparation method of fuel cell carbon-supported platinum-based catalyst |
| CN111755707A (en) * | 2020-07-02 | 2020-10-09 | 无锡威孚高科技集团股份有限公司 | Preparation method of platinum-cobalt alloy catalyst |
| CN111755707B (en) * | 2020-07-02 | 2022-05-13 | 无锡威孚高科技集团股份有限公司 | Preparation method of platinum-cobalt alloy catalyst |
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Application publication date: 20130417 |