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Method for preparing platinum monatomic material by using alkyl imidazole ionic liquid

A technology of ionic liquid and alkylimidazole, which is applied in the field of single-atom catalysts, can solve problems such as the easy aggregation of platinum single atoms, the narrow electrochemical window of ion mass transfer, and the impact on the hydrogen evolution performance of single-atom platinum electrocatalysts. Low requirements, controllable process, and the effect of reducing dosage

Pending Publication Date: 2022-04-12
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still some disadvantages in the preparation of single-atom platinum electrocatalysts in traditional aqueous solutions, such as too fast mass transfer of ions in aqueous solution, narrow electrochemical window, etc., which lead to problems such as easy agglomeration of platinum single atoms or too little loading, which will eventually affect Hydrogen evolution performance of synthesized single-atom platinum electrocatalysts

Method used

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  • Method for preparing platinum monatomic material by using alkyl imidazole ionic liquid
  • Method for preparing platinum monatomic material by using alkyl imidazole ionic liquid
  • Method for preparing platinum monatomic material by using alkyl imidazole ionic liquid

Examples

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Embodiment 1

[0029] In this example, the method for preparing Pt single-atom materials from 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid is mainly introduced. The process flow is as follows figure 1 As shown, the specific operation steps are as follows:

[0030] Step 1, 2.38g nickel chloride hexahydrate, 1.19g cobalt chloride hexahydrate, 0.3g graphene oxide (GO) solid particles are dissolved in the deep eutectic solution, and the deep eutectic solution is dissolved in ethyl alcohol by choline chloride It is formed in diol, and the formed black solution is used as the electrolyte, and the constant potential compounding is carried out in a standard three-electrode system composed of a nickel sheet as a counter electrode, a carbon cloth (CC) as a working electrode, and a non-mercury wire electrode as a reference electrode. Electrodeposition with a voltage of -0.6V to obtain a Ni-Co-GO composite electrode material; place the Ni-Co-GO composite electrode material in a tube furnac...

Embodiment 2

[0035] In this example, the method for preparing Pt single-atom materials from 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid is mainly introduced. The process flow is as follows figure 1 As shown, the specific operation steps are as follows:

[0036] Step 1, 4.96g nickel chloride hexahydrate, 2.38g cobalt chloride hexahydrate, 0.3g graphene oxide (GO) solid particles are dissolved in the deep eutectic solution, and the deep eutectic solution is dissolved in ethyl alcohol by choline chloride It is formed in diol, and the formed black solution is used as the electrolyte, and the constant potential compounding is carried out in a standard three-electrode system composed of a nickel sheet as a counter electrode, a carbon cloth (CC) as a working electrode, and a non-mercury wire electrode as a reference electrode. Electrodeposition with a voltage of -0.7V to obtain a Ni-Co-GO composite electrode material; place the Ni-Co-GO composite electrode material in a tube furnac...

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Abstract

The invention discloses a method for preparing a platinum monatomic material through cyclic voltammetry by taking alkyl imidazole ionic liquid as electrolyte. A three-electrode system is adopted, a sample prepared through composite electrodeposition serves as a working electrode, a platinum sheet serves as a counter electrode, a non-aqueous silver wire electrode serves as a reference electrode, alkyl imidazole ionic liquid serves as electrolyte, and platinum single atoms are loaded through cyclic voltammetry (CV). The platinum monatomic loaded composite electrode material prepared by using the alkyl imidazole ionic liquid as the electrolyte has good hydrogen evolution catalytic activity, and can be applied to the field of hydrogen production by electrolysis of water.

Description

technical field [0001] The invention relates to the technical field of single-atom catalysts, in particular to a method for preparing platinum single-atom materials by using alkylimidazole ionic liquids. Background technique [0002] The increasing depletion of fossil fuels and the many environmental problems caused by it force people to seek new clean energy sources. Hydrogen energy has the advantages of high energy density, non-polluting combustion products, and renewability. It is recognized as a green energy carrier and one of the energy sources with the most development potential in the future. The development and production of hydrogen technology is the first problem to be solved in the implementation of hydrogen energy technology universalization. Compared with the traditional hydrogen production method, electrolytic water hydrogen production has the advantages of mature industrialization, no pollution, and high purity of hydrogen produced, which has attracted widesp...

Claims

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Application Information

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IPC IPC(8): C25B11/081C25B11/054C25B1/04B82Y30/00B82Y40/00
CPCY02E60/50
Inventor 邹星礼汪淑娟夏雪雯卢明辉王府倩张琪庞忠亚李光石鲁雄刚许茜
Owner SHANGHAI UNIV
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