NiCo2O4/泡沫镍复合电极材料的制备及其超级电容器性能研究  

Study on fabrication and performance of NiCo2O4/NF electrode material as supercapacitor

作　　者：柏任流 甄德帅 吴大旺 张悦红 文志刚 张杰 邹洪涛 童叶翔[2] Bai Renliu;Zhen Deshuai;Wu Dawang;Zhang Yuehong;Wen Zhigang;Zhang Jie;Zou Hongtao;Tong Yexiang(School of Chemistry and Chemical Engineering,Qiannan Normal University for Nationalities,Duyun 558000;School of Chemistry,Sun Yat-sen University,Guangzhou 510275)

机构地区：[1]黔南民族师范学院化学化工学院,都匀558000 [2]中山大学化学学院,广州510275

出　　处：《化工新型材料》2020年第10期73-77,共5页New Chemical Materials

基　　金：贵州省科技厅联合基金(黔科合KY字[2015]7718);贵州省普通高等学校工程研究中心项目(黔教合KY字[2015]342和黔教合KY字[2018]010);黔南民族师范学院校级项目(qnsy2015);黔南民族师范学院大学创新创业项目(201510670003)。

摘　　要：通过水热法和焙烧法在泡沫镍(NF)上制备了具有纳米片状的钴酸镍(NiCo2O4/NF),采用X射线衍射(XRD)、扫描电子显微镜(SEM)、N2等温吸附/脱附测试和电化学测试等手段,对NiCo2O4/NF样品的组成、形貌和电化学性能等进行表征。结果表明:具有纳米片状的NiCo2O4均匀地生长在NF表面。当NiCo2O4/NF作为一种不使用胶黏剂的电极材料时,表现出良好的电化学性能,其在电流密度为1A/g时比电容可高达1102F/g,在电流密度10A/g条件下循环测试5000次后,比电容损失量约为11.3%。此外,以NiCo2O4/NF为正极,活性炭(AC)为负极组装了非对称超级电容器(NiCo2O4/NF//AC-ASC),发现其具有高能量密度及良好的循环稳定性。The NiCo2O4 nanosheets uniformly grown on the Ni foam(CF)(NiCo2O4/NF)were successfully fabricated by a hydrothermal method,followed by the calcination process.The compositions,morphologies and electrochemical performance of NiCo2O4/NF were demonstrated by XRD,SEM,N2 adsorption/desorption measurements,and electrochemical measurements.The results suggested that the NiCo2O4 nanosheets uniformly grown on the NF,and NiCo2O4 nanosheets had the good electrochemical performance.For example,the specific capacitance value of NiCo2O4/NF was up to 1102 F/g and the after a 4000-cycle test at a current density of 10 A/g,the retention capacitance value was about 88.7%.In addition,an ASC was assembled using NiCo2O4/NF as the positive electrode and activated carbon(AC)as the negative electrode,which shown a high energy density and remarkable cycling performance.

关 键 词：钴酸镍 泡沫镍 水热法 超级电容器 

分 类 号：O645.5[理学—物理化学]