以正硅酸乙酯（TEOS）为有机硅源与混合盐进行球磨混合，有机硅在熔融盐体系中高温煅烧碳元素重组为二维片状结构，同时在氩氢气氛下Si-O也会被还原，最终得到二维SiO_x/C负极材料。电化学测试结果表明，当煅烧温度为900℃时，二维SiO_x/C负极材料具有良好的电化学性能；在0.5 A/g的电流密度下经过100次循环后，可逆比容量保持在781.6 mA·h/g。优异的电化学性能归因于材料良好的结构稳定性以及优越的导电性。这种合成方式为制备二维SiO_x/C负极材料提供了一种新的方法。

Tetraethyl orthosilicate (TEOS) is used as organic silicon source and blended with mixed salts for ball milling.The carbon element in TEOS calcined at high temperature in molten salt system is recombined into two-dimensional sheet structure while Si-O in TEOS is also reduced in an argon hydrogen atmosphere, and finally 2D SiO_x/C anode material is obtained.Electrochemical test results show that the 2D SiO_x/C anode material has good electrochemical performance when the calcination temperature is at 900℃.The reversible specific capacity of the material remains at 781.6 mAh·g^-1 after 100 cycles at a current density of 0.5 A·g^-1.Its excellent electrochemical performance can be attributed to its good structural stability and excellent conductivity.This synthesis method provides a new idea for the preparation of two-dimensional SiO_x/C anode materials.

汪子涵(1996-),男,硕士研究生,研究方向为主要锂离子电池材料,446499246@qq.com