ZIF-67衍生Co_(3)O_(4)/C材料的制备及其电化学性能研究  

Preparation and electrochemical properties of Co_(3)O_(4)/C composites derived from ZIF-67

作　　者：王建军 肖桂英 金多 王林园 温广明 赵轩宇[1] WANG Jian-jun;XIAO Gui-ying;JIN Duo;WANG Lin-yuan;WEN Guang-ming;ZHAO Xuan-yu(Department of Chemical and Material Engineering,Lyuliang University,Lyuliang 033000,China;Institute of New Carbon-based Materials and Zero-carbon and Negative-carbon Technology,Lyuliang University,Lyuliang 033000,China;School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China)

机构地区：[1]吕梁学院化工与材料工程系,山西吕梁033000 [2]吕梁学院碳基新材料及零碳负碳利用技术研究所,山西吕梁033000 [3]山西大学化学化工学院,山西太原030006

出　　处：《化学研究与应用》2025年第4期844-853,共10页Chemical Research and Application

基　　金：山西省青年科学基金项目(202203021222319、202203021222321)资助;山西省高等学校科技创新计划项目(2024L375、2024L376)资助;吕梁市高层次科技人才专项(2023RC21)资助;吕梁学院科研启动项目资助。

摘　　要：本文成功设计并合成了一种新的ZIF-67衍生Co_(3)O_(4)/C复合材料。实验结果表明,在特定气体环境中高温煅烧ZIF-67得到Co_(3)O_(4)/C材料不仅可以增强材料导电性,而且可以增加材料的比表面积。这促使复合材料可以充当“离子和电解质储存器”,以促进电解质离子的运输,另外,还可以对重复充放电过程中Co_(3)O_(4)体积的变化起到缓冲作用,从而保护Co_(3)O_(4)结构不被破坏。用于超级电容器的Co_(3)O_(4)/C电极电容为533.3 F·g^(-1),在10000次循环稳定性测试后电容保留率为96.0%。对其进行恒电流充放电测试时,电流密度增加20倍后,其电容值仍保留72.8%。Novel Co_(3)O_(4)/C has been successfully designed and synthesized derived from ZIF-67.The experimental findings indicate that the high-temperature calcination of ZIF-67 under a designated gas atmosphere results in Co_(3)O_(4)/C composites that exhibit enhanced electrical conductivity and increased specific surface area.Such characteristics enable the composite to function as an effective"ion and electrolyte reservoir,"significantly facilitating ion transport within the electrolyte.Moreover,the composite can buffer the volumetric alterations of Co_(3)O_(4)during cycling,thereby safeguarding the structural stability of Co_(3)O_(4)against mechanical failure induced by volume changes.The Co_(3)O_(4)/C electrodes exhibit high specific capacitance(533.3 F·g^(-1),0.5 A·g^(-1)),along with high-rate capability(72.8% after increasing the current densities 20-fold)and stable energy-storage performance(specific capacitance retention of 96.0% after 10,000 cycles).

关 键 词：ZIF-67 Co_(3)O_(4) 超级电容器 

分 类 号：O614.8[理学—无机化学]