High-performance porous Silicon monoxide (cas 10097-28-6) anodes synthesized via metal-assisted chemical etching

Add time:07/20/2019    Source:sciencedirect.com

We describe a simple process for synthesizing three-dimensional porous Silicon monoxide (cas 10097-28-6) anode materials from bulk silicon monoxide powders by combining a galvanic displacement reaction and metal catalytic etching process. Silver nanoparticles that act as a catalyst were deposited on the surface of silicon monoxide via a galvanic reaction. Subsequently, the silver-deposited silicon monoxide particles were chemically etched to synthesize porous silicon monoxide particles, without changing the chemical and physical properties of SiO. The carbon-coated porous silicon monoxide anodes exhibited excellent electrochemical properties, including a high specific capacity (1520 mA h g−1), a stable cycling retention (reversible capacity of 1490 mAh g−1, after 50 cycles), and a high rate capability (74% at 3 C rate, compared to 0.1 C rate). This process may open up an effective way to make other porous semiconducting materials for a rich variety of applications, including lithium-ion batteries.

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