文献类型：期刊文献

英文题名：Facile fabrication of NiCl2/g-C3N4 composite as high-performance cathode material for thermal battery

作者：Sun, Hui-Ping[1];Gao, Wen-Xiu[2];Yuan, Le-Yi[1];Ge, Yun-Xiao[1];Zheng, Xia[2];Luo, Chong-Xiao[2];Liu, Jin-Ku[1];Feng, Zhou-Tao[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Shanghai Inst Space Power Sources, Shanghai 200245, Peoples R China

年份：2025

卷号：512

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20244917457287);WOS:【SCI-EXPANDED(收录号:WOS:001371958700001)】；

基金：Acknowledgments This work was supported by the National Natural Science Foundation of China (grant 22378124) and the Opening Project of Material Corro-sion and Protection Key Laboratory of Sichuan Province (grant 2023CL04) .

语种：英文

外文关键词：Thermal battery; Graphitic carbon nitride; Cathode material; NiCl2

摘要：The NiCl2 cathode material used in thermal batteries still encounters challenges such as poor compatibility with ternary electrolytes, high polarization internal resistance and long activation time, all of which hinder its widespread application. In this research, lamellar structure NiCl2/g-C3N4 cathode composites (NCCN) are prepared by the ball milling-calcination method. The triangular porous structure of graphitic carbon nitride (g-C3N4) promotes the specific surface area of the material and accelerates the transport of reactive particles. Meanwhile, the protective effect of g-C3N4 mitigates direct contact between NiCl2 and the ternary lithium electrolyte, improving the discharge compatibility of the battery. The attraction of free electrons by the pyridine nitrogen reduces the energy barrier for carrier transition from the valence band to the conduction band, thereby enhancing the conductivity of NiCl2. The 5 wt.% g-C3N4-modified NiCl2 composite exhibits a high discharge capability, high-rate performance and a relatively short thermal activation time. At a cut-off voltage of 1.50 V and a current density of 300 mA cm-2, it achieves a specific capacity of 310.74 mAh g- 1 and a high specific energy of 701.39 Wh kg- 1. Furthermore, the thermal activation time of the 5 wt.% g-C3N4-modified NiCl2 composite was reduced by about 40 % in comparison to that of pure NiCl2, which is of great significance for broadening the application of NiCl2-based cathode materials in the field of emergency equipment.