期刊
ELECTROCHIMICA ACTA
卷 427, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2022.140854
关键词
Zinc-ion hybrid capacitor; Metal-organic frame material; Porous carbon; High-energy density
资金
- Key Reaserch & Development and promotion projects in Henan Province [202102210057]
Zinc-ion hybrid supercapacitors have advantages of high power density, long lifetime, low cost, and environmental protection. However, their energy density is restricted by the low specific capacitance of carbon electrode materials. This study introduces a novel method to synthesize zinc and nitrogen co-doped porous carbon materials, improving the electrochemical properties and enhancing the energy density of ZHSCs.
Zinc-ion hybrid supercapacitors (ZHSCs) have received widespread attention because of their advantages of high power density, long lifetime, low cost and environmental protection, but they restricted to the low energy density mainly caused by low specific capacitance of carbon electrode materials. Herein, we design and utilize a novel method to synthesis of zinc and nitrogen co-doped zinc-based metal-organic framework derived porous carbon (ZMDPC) materials through the binding of two ligands. The obtained carbon materials show excellent electrochemical properties with high specific capacitance and cycling stability due to the zinc and nitrogen co-doping, excellent pore structure and high specific surface area. As a result, ZHSCs assembled by the zinc and nitrogen codoped porous carbon cathode and zinc metal anode demonstrate an high specific capacitance of 255.6 F g(-1), high energy density of 90.88 Wh kg(-1), outstanding cycle stability and excellent rate performance. Furthermore, the supercapacitor exhibited a capacity retention of 97.8% after 10,000 cycles at a current density of 10 A g(-1). The development provides an attractive route to design porous carbon electrodes based on various two-dimensional nanomaterials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据