超级电容器
电池(电)
材料科学
阳极
储能
阴极
氢氧化物
电极
碱性电池
拉曼光谱
化学工程
电容
纳米技术
电解质
化学
物理
量子力学
光学
工程类
物理化学
功率(物理)
作者
Shuge Dai,Yucheng Bai,Weixia Shen,Sen Zhang,Hao Hu,Jianwei Fu,Xinchang Wang,Chenguo Hu,Meilin Liu
标识
DOI:10.1016/j.jpowsour.2020.228915
摘要
Battery-supercapacitor hybrid (BSH) device is one of the most promising candidates for next advanced energy storage systems because it can bridge the performance gap between lithium ion batteries and conventional capacitors. Herein, we report a novel porous core-shell structured Fe2O3@Fe3[email protected] nanochains and urchin-like Ni–Co carbonate hydroxide hybridized (denoted as NiCo–CHH) microspheres for advanced battery-type supercapacitors. The as-obtained Fe2O3@Fe3[email protected] anode shows high specific capacity (611 C g−1) and good rate capability. The fabricated NiCo–CHH cathode delivers high specific capacity (814 C g−1) and excellent cycling stability. When assembled into a battery-type supercapacitor, the NiCo–CHH//Fe2O3@Fe3[email protected] device delivers a high energy density (95.2 Wh kg−1) and excellent cycling stability. Moreover, In situ Raman spectroscopy proves the reversibility of the NiCo–CHH electrode, and the synergistic effects of Ni and Co ions, further revealing its energy storage mechanism. These findings provide a novel insight on high-performance battery-type supercapacitors.
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