文献类型：期刊文献

英文题名：Ultrafast fabrication of CO2-derived porous micro-sized Si-C anodes for high-energy lithium-ion batteries

作者：Wei, Yunan[1];Li, Leyi[1];Liang, Han[1];Zhang, Fan[1];Mo, Runwei[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200030, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China

年份：2025

卷号：316

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20252418583083);WOS:【SCI-EXPANDED(收录号:WOS:001511029900002)】；

基金：This research was supported by Shanghai pilotProgram for Basic Research (grant no. 22TQ1400100-8), Shanghai Pujiang Program (grant no. 20PJ1402500), Natural Science Foundation of Shanghai (grant no. 22ZR1416600) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：High-value CO2 conversion; Silicon-carbon anode; Induction heating; In-situ observation; Lithium-ion battery

摘要：Converting carbon dioxide (CO2) into battery materials with high value is an effective strategy to address the problem of excessive CO2 emissions. Silicon (Si) anodes provide outstanding lithium storage capacity for lithium-ion batteries but face practical limitations due to low intrinsic electrical conductivity and significant volume expansion. Here, we developed an innovative method for ultrafast preparation of CO2 derived porous micro-sized Si-C anodes, which is achieved by induction heating of commercial alloy. This configuration showed remarkably an enhanced reversible capacity (e.g., 1617.2 mA h g(-1)), outstanding rate performance (e.g., 839.6 mA h g-1 at 2 A g(-1)), and excellent cycling stability (e.g., 80.3 % capacity retention for 300 cycles at 1 A g(-1)), which exceeds previously reported. In-situ optical microscopy characterization further reveals the structural stability of the porous micro-sized Si-C electrode during lithiation. Based on this excellent performance, we assembled pouch cells with NCM811 cathodes, which achieved 91.8 % capacity retention after 200 cycles at 0.5 A g(-1). This effective strategy opens up a new avenue for large-scale and efficient conversion of CO2 into high-value products.