亚铜离子掺杂增强氯化镍高温放电性能研究  

Enhancement of high temperature discharge performance ofnickel chloride via cuprous ion doping

作　　者：潘志鹏 姚斌 王毅 刘玲玲 桂宇帆 周灵平[2] 符立才[2] PAN Zhipeng;YAO Bin;WANG Yi;LIU Lingling;GUI Yufan;ZHOU Lingping;FU Licai(Guizhou Meiling Power Supply Co.Ltd,Zunyi 563000,China;College of Materials Science and Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]贵州梅岭电源有限公司,贵州遵义563000 [2]湖南大学材料科学与工程学院,长沙410082

出　　处：《功能材料》2023年第10期10143-10148,共6页Journal of Functional Materials

基　　金：湖南省自然科学基金项目(2020JJ41808)。

摘　　要：氯化镍(NiCl_(2))作为一种高电位热电池正极材料,自身不佳的导电性限制了其在热电池中的应用。在本研究中,利用液相混合-低温煅烧工艺制备了亚铜离子掺杂的氯化镍(NiCl_(2)-Cu_(x))。其中NiCl_(2)-Cu5具备最佳的电化学性能,与NiCl_(2)相比,NiCl_(2)-Cu5展现出高电压、高比能量优势,尤其是在500 mA cm-2电流密度下,NiCl_(2)-Cu5展现出724 Wh kg-1的高比能量,相比于NiCl_(2)约提升了82%。脉冲测试证明,NiCl_(2)-Cu5正极材料具备更低的内阻,能够缓解放电过程中的欧姆极化,实现高比能量输出。这项工作为高性能热电池正极材料的开发提供了一种新的思路。Nickel chloride(NiCl_(2)),as a cathode material of high potential thermal battery,its poor conductivity limits its application in thermal battery.In this study,cuprous ion doped nickel chloride(NiCl_(2)-Cu_(x))was prepared via liquid-phase mixing and low-temperature calcination process.NiCl_(2)-Cu5 possesses the best electrochemical performance.Compared with NiCl_(2),NiCl_(2)-Cu5 exhibits the advantages of high voltage and high specific energy.Especially at the current density of 500 cm 2,NiCl_(2)-Cu5 shows a high specific energy of 724 kg,which is about 82%higher than that of NiCl_(2).Pulse test shows that NiCl_(2)-Cu5 cathode material has lower internal resistance and can alleviate ohmic polarization during discharge,thus realizing high specific energy output.This work provides a new approach for the development of high-performance cathode materials for thermal battery.

关 键 词：热电池 氯化镍 离子掺杂 高比能量 

分 类 号：O643.16[理学—物理化学]