摘要
采用电化学沉积法在PDA改性石墨毡柔性基底上生成纳米片阵列结构的Co(OH)_(2),并以此为生长模板进一步在2-甲基咪唑中生长ZIF-67,通过程序升温热处理后形成Co_(3)O_(4)多级分层结构,得到两种Co_(3)O_(4)/C@GF柔性电极材料。电化学性能研究表明,柔性电极ZIF-67→Co_(3)O_(4)/C@GF展示出比Co(OH)_(2)→Co_(3)O_(4)/C@GF更高的面积比电容和较低的电荷转移电阻及离子扩散电阻。这主要是因为多级分层结构有利于增加单位面积活性物质的载量,提高能量密度,同时增加了活性材料的比表面积,促进电解液的吸收和扩散,加速反应动力学。
The flexible electrodes are prepared by electrodeposition Co(OH)_(2)nanosheet arrays on the graphite felt modified by PDA,and then in-situ growth of ZIF-67 on the nanosheets followed by high-temperature cal⁃cination to obtain Co_(3)O_(4)/C@GF with hierarchical structure.Compared with Co(OH)_(2)→Co_(3)O_(4)/C@GF,the ZIF-67→Co_(3)O_(4)/C@GF shows much higher area specific capacitance,lower charge transfer resistance and ion diffusion resistance.This is mainly due to the hierarchical structure which is conducive to improve the energy density by increasing the load of active materials.Meanwhile,the specific surface area of the flexible electrode is also increased which is beneficial to promote the absorption and diffusion of the electrolyte,and then accelerates the reaction kinetics.
作者
胡晓霞
王春华
谈甜甜
邢彦军
刘小杰
HU Xiaoxia;WANG Chunhua;TAN Tiantian;XING Yanjun;LIU Xiaojie(School of Food and Tourism,Shanghai Urban Construction Vocational College,Shanghai 201415,China;College of Chemistry and Chemical Engineering,Donghua University,Shanghai 201620,China;Longfu Recycling Energy Scientech Co.,Ltd.,Binzhou 256600,China)
出处
《印染》
CAS
北大核心
2024年第6期70-74,共5页
China Dyeing and Finishing
基金
山东省博士后创新基金(202103067)
上海城建职业学院校级一般项目(cjky202310)。
