用于超级电容器的层状Co3O4/Ti纳米片柔性电极及其低电荷转移电阻（英文）  

Layered Co3O4/Ti Nanosheet Flexible Electrode with Low Transfer Resistance for Supercapacitor

作　　者：韩丹丹[1] 赵远 申烨 丁元生[1] 程振玉[1] 景晓燕[2] 张学仪 HAN Dan-Dan;ZHAO Yuan;SHEN Ye;DING Yuan-Sheng;CHENG Zhen-Yu;JING Xiao-Yan;ZHANG Xue-Yi(College of Chemistry and Pharmaceutical Engineering,Jilin Institute of Chemical Technology,Jilin,Jilin 132022,China;College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China;Jilin Hospital of Integrated Traditional Chinese and Western Medicine,Jilin,Jilin 132012,China)

机构地区：[1]吉林化工学院化学与制药工程学院,吉林132022 [2]哈尔滨工程大学材料科学与化学工程学院,哈尔滨150001 [3]吉林中西医结合医院,吉林132012

出　　处：《无机化学学报》2019年第8期1485-1492,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21401073);吉林省科技厅自然科学基金(No.20170101211JC);吉林化工学院重大科技项目(No.2018019)资助

摘　　要：采用水热合成法,在Ti网上原位生长多孔层状Co3O4纳米片,并优化了电荷转移电阻。通过X射线衍射(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对产物的结构、形貌进行表征,及对电极的电化学性能进行测试。结果表明,材料是由排列良好的微米矩形二维薄片组成,且具有均匀的孔隙分布。这种独特的微纳米结构的超级电容器电极材料降低了电极的电荷转移电阻,增强了活性物质的结构稳定性,从而提高了电极的电化学性能,在电流密度为100 mA·g^-1时,电极循环1 000次后,电容保持率为91.8%,电荷转移电阻(Rct)为0.29 Ω。这些显著的超电容性能归因于合理的二维层状结构在柔性基底钛网上的生长及柔性Co3O4/Ti电极活性材料的高利用率。The layered Co3O4 nanosheets with porous nature on Ti mesh were adopted to optimize the transfer resistance by a facile hydrothermal method.The synthesized materials were characterized using X-ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM) and electrochemical techniques.The results showed that the materials consisted of well-arranged micrometer length rectangular 2D flakes with uniform pore distribution.This unique microstructure obtained the electrode lower transfer resistance,higher structure stability,and better electrochemical performance for supercapacitor.The 2D porous layered Co3O4 nanosheet could achieve a relatively good capacitance retention of 91.8% at a current density of 100 mA·g^-1 after 1 000 cycles and a low transfer resistance (Rct) of 0.29 Ω.These remarkable supercapacitive performances are attributed to the rationally 2D layered structure on flexible Ti mesh substrate,high utilization ratio of active materials of the flexible Co3O4/Ti electrode.

关 键 词：柔性电极 层状Co3O4 多孔纳米片 转移电阻 超级电容器 

分 类 号：O646[理学—物理化学]