文献类型：期刊文献

英文题名：Epoxy resin-derived N, P co-doping hard carbon with improved yield and anode performance in Li-ion battery

作者：Zhao, Chongjun[1];Guo, Huiming[1];Zhu, Beibei[1];Li, Mingkun[1];Tong, Xiangzhi[1];Gao, Wenjie[1];Zhu, Yunpeng[1];Zhao, Chunhua[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat Minist Educ, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China

年份：2024

卷号：30

期号：4

起止页码：1971

外文期刊名：IONICS

收录：;EI(收录号：20240415443597);WOS:【SCI-EXPANDED(收录号:WOS:001148224100001)】；

基金：We are grateful for the support of the National Natural Science Foundation of China (22075082), Natural Science Foundation of Shanghai (No. 19ZR1413000, 13ZR1411900), Shanghai Alliance Plan (No. LM201881, LM201751), Shanghai Leading Academic Discipline Project (B502), and Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：N; P co-doping; Epoxy resin; Carbon yield; Hard carbon; Li-ion battery

摘要：Electrochemical energy storage devices play key roles in collecting energy from new energy power sources, transferring energy in place and time difference, and supplying energy for those energy consumers. In this work, in order to further improve the high energy density of Li-ion battery, a hard carbon anode is suggested by chosen epoxy as carbon source, accompanied by the simultaneous introduction of three curing agents (dicyandiamide, phytic acid (PA), and ferric acetylacetone). Furthermore, dicyandiamide supplies N-dopant, while PA gives P-dopant and also increases the yield of hard carbon from 23.6 to 40.9%. Based on the synergistic effect of N and P atoms, as well as catalytic effect of Fe, the optimized hard carbon of CNFP-60-700, as Li-ion battery anode, exhibits a reversible capacity of 779.2 mAh g-1 and an initial Coulombic efficiency (ICE) of 58.8% at 0.1 A g-1 for the first cycle, and it still retains a capacity of 508.3 mAh g-1 after 160 cycles.