首页|热电池用单相硫化物正极材料的可控合成及其电性能研究

热电池用单相硫化物正极材料的可控合成及其电性能研究

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采用高温固相法合成了单相硫化物正极材料,通过控制单相硫化物在高硫低氧的热力学优势区位促使中间过渡态向产物平衡转化,解决了多种硫化物共存的技术难题,实现了人工可控合成,减弱了电压尖峰的影响.在硫/金属摩尔比为2.5,反应温度为440 ℃,反应时间超过24 h的条件下,合成单相铁/钴/镍二硫化物,对应的热电池单体电压分别为2.05、1.98和2.01 V,输出比容量分别为883、875和958 As/g.部分研究成果进行了工程转化,合成的NiS2性能稍优于商用材料.
Controllable synthesis and electrical properties of single-phase sulfide cathode materials for thermal batteries
The single-phase sulfide cathode material was synthesized by high temperature solid-phase method.By controlling the thermodynamic advantage of single-phase sulfide in high sulfur and low oxygen,the intermediate transition state was transformed into the product equilibrium,which solved the technical problem of the coexistence of multiple sulfides,realized the artificial controllable synthe-sis,and effectively weakened the influence of voltage spikes.Single-phase iron/cobalt/nickel disulfide was synthesized at a sulfur/metal molar ratio of 2.5,a reaction temperature of 440 ℃,and a reaction time of more than 24 h.The corresponding thermal battery cell voltages were 2.05,1.98,and 2.01 V,and the output specific capacities were 883,875,and 958 As/g,respectively.Some research results have been transformed into engineering,and the performance of the synthesized NiS2 is slightly bet-ter than that of commercial materials.

thermal batterysingle sulfidecontrollable synthesiscathode material

陈祥华、宋仁宏、王开琼、唐立成、田千秋

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贵州梅岭电源有限公司特种化学电源国家重点实验室,贵州遵义 563003

天津大学材料科学与工程学院,天津 300350

天津大学福州国际校区天津大学-新加坡国立大学福州联合学院,福建 福州 350207

热电池 单项硫化物 可控合成 正极材料

2025

电源技术
中国电子科技集团第十八研究所

电源技术

北大核心
影响因子:0.329
ISSN:1002-087X
年,卷(期):2025.49(1)