超级电容器
材料科学
电容
插层(化学)
阳极
电解质
阴极
环境友好型
储能
电容器
化学工程
纳米技术
无机化学
电极
电压
电气工程
物理化学
工程类
物理
功率(物理)
生物
量子力学
化学
生态学
作者
Ke Mao,Junjie Shi,Qixiang Zhang,Yixin Hou,Li Wen,Zunyu Liu,Fei Long,Ke Niu,Nishuang Liu,Fei Long,Yuan Gao
出处
期刊:Nano Energy
[Elsevier]
日期:2022-12-01
卷期号:103: 107791-107791
被引量:34
标识
DOI:10.1016/j.nanoen.2022.107791
摘要
Degradable energy storage systems (ESSs) have been proposed to tackle increasing electronic waste such as heavy metals and toxic organic electrolytes. However, ensuring ESS degradability and cycle life at the same time is a paradox challenge. Here we reported a degradable micro Zn-ion hybrid supercapacitor (DMZHSC) based on MXene/ZnCl2 anode and MnO2-MWCNTs cathode. Considering the problem of the lower capacitance of MXene, the ZnCl2 modification strategy of pre-intercalating Zn2+ into the layer of MXene was used by osmotic pressure, opening more active sites for the subsequent Zn2+ intercalation. During this process, Cl- will replace part of the -F terminals on the surface of MXene. Benefited from above modification, the MXene/ZnCl2 anode shown a very high capacitance up to 529.1 F g−1 at 1.00 mV s−1, which is 32.2% higher than pure MXene (400.3 F g−1 at 1.00 mV s−1). More importantly, the assembled DMZHSCs not only possesses excellent flexibility but also can degrades within 2.0 h after mild external stimulation in PBS buffer. This work not only provides a new method for MXene modification but also provides a new idea for the construction of environmentally friendly new capacitors.
科研通智能强力驱动
Strongly Powered by AbleSci AI