超级电容器
化学
电容
重量分析
三元运算
化学工程
电极
储能
基质(水族馆)
电化学
碳纤维
涂层
兴奋剂
纳米技术
复合材料
复合数
光电子学
材料科学
有机化学
海洋学
物理
地质学
工程类
量子力学
物理化学
功率(物理)
程序设计语言
计算机科学
作者
Junpeng Wang,Zengcai Guo,Feng Li,Hang Yang,Hongwei Che,Zhixiao Zhang,Yanming Wang,Xiaoliang Zhang,Simin Li,Jingbo Mu
标识
DOI:10.1016/j.jelechem.2023.117189
摘要
This paper designs and produces ternary NiCo2Alx-LDH grown directly on a novel porous hollow structure of nitrogen-doped carbon capsule (N-Cc) conducting matrix with a PANI coating layer. The carefully designed NiCo2Alx-LDH/N-Cc@PANI electrodes exhibit electrochemical properties that are highly prized for their energy storage utility: specifically, a gravimetric capacitance of 1630F/g, an energy density of 55.75 Wh kg−1 at the power density of 750 W kg−1, and cyclic stability that achieves capacitance retention of 93.1 % after 5000 uninterrupted charge–discharge cycles. It should be noted that the electrode's excellent storage performance benefitted from the use of Al, which was crucial in stabilizing the LDH structure. It should also be pointed out that the 3D interconnected porous structure composed of N-Cc provides a greater accessible surface area and shortens the ion/electron transport distance, whilst PANI ensuring the LDHs remain firmly in contact with the conductive substrate.
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