Tailoring the Hollow Structure within CoSn(OH)<sub>6</sub> Nanocubes for Advanced Supercapacitors
Zhiyong Yang,
Chunxia Li,
Fangfang Liu,
Xiaowei Lv,
Lei Zhang,
Yanli Fang,
Hui Wang
Affiliations
Zhiyong Yang
Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, School of Environment and Engineering, Weifang University of Science and Technology, Weifang 262700, China
Chunxia Li
Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, School of Environment and Engineering, Weifang University of Science and Technology, Weifang 262700, China
Fangfang Liu
Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, School of Environment and Engineering, Weifang University of Science and Technology, Weifang 262700, China
Xiaowei Lv
State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Lei Zhang
State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Yanli Fang
State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Hui Wang
State Key Laboratory Base for Eco-Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
The enhanced application performance of hollow-structured materials is attributed to their large surface area with more active sites. In this work, the hollow CoSn(OH)6 nanocubes with increased surface area and mesopores were derived from dense CoSn(OH)6 nanocube precursors by alkaline etching. As a result, the hollow CoSn(OH)6 nanocubes-based cathode electrode exhibited a higher area-specific capacitance of 85.56 µF cm−2 at 0.5 mA cm−2 and a mass-specific capacitance of 5.35 mF g−1 at 0.5 mA cm−2, which was more extensive than that of the dense precursor. Meanwhile, the current density was increased 4-fold with good rate capability for hollow CoSn(OH)6 nanocubes.
