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Title:
PRECIOUS METAL-SILICON COMPOSITE POWDER PREPARED BY MEANS OF GALVANI REACTION, AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/012177
Kind Code:
A1
Abstract:
Precious metal-silicon composite powder prepared by means of a Galvani reaction, and an application thereof. By means of match between electron gain or loss in a Si-Si bond and chemical potentials for atomic reduction of Au3+/Au, Ag+/Ag, Cu2+/Cu, and the like, galvanic displacement reaction is carried out on superfine silicon powder and a solution containing precious metal ions in an HF environment. The superfine silicon powder is used as a reducing agent and a reaction carrier as well, and precious metal Au, Ag, Cu, and the like are gradually deposited on the surface of the superfine silicon powder after being displaced from the solution, so as to form a precious metal-silicon (shell-core) micro-nanostructure particle. Due to the fact that the surface of the shell-core micro-nanostructure particle is provided with a precious metal layer, the particle has the characteristics of precious metal, such as high conductivity. However, the use amount of the precious metal is greatly reduced, and therefore the cost can be greatly reduced.

Inventors:
LV TIEZHENG (CN)
ZHAO LILI (CN)
Application Number:
PCT/CN2015/088510
Publication Date:
January 26, 2017
Filing Date:
August 31, 2015
Export Citation:
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Assignee:
LV TIEZHENG (CN)
ZHAO LILI (CN)
International Classes:
B22F1/18
Foreign References:
CN102051689A2011-05-11
JP2002322579A2002-11-08
US20120037856A12012-02-16
CN101157130A2008-04-09
CN102642025A2012-08-22
Attorney, Agent or Firm:
CHANGSHA XINGYAO PATENT FIRM (CN)
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