期刊
NANO ENERGY
卷 91, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2021.106633
关键词
MXene nanosheets; Layered double hydroxides; Nanohybrid; Symmetric supercapacitor; Coupling synergy
类别
资金
- Chang Jiang Scholars Program [51073047]
- National Natural Science Foundation of China [51773049, 22075063, U1932205]
- China Aerospace Science and Technology Corporation-Harbin Institute of Technology Joint Center for Technology Innovation Fund [HIT15-1A01]
- Natural Science Funds of Heilongjiang Province [ZD2019B001]
- Heilongjiang Touyan Team [HITTY-20190033]
- Chongqing Research Institute of HIT
- Harbin City Science and Technology Projects [2013DB4BP031, RC2014QN017035]
The study successfully enhances structural stability, electrical conductivity, and electrolyte-accessibility through the hierarchical nanohybridization of 3D FeNi-LDH arrays on 2D MXene nanosheets, significantly improving redox reaction kinetics and resulting in outstanding capacitance behavior and energy densities.
Layered double hydroxides (LDHs) are promising energy materials for their considerable theoretical capacities and adjustable compositions, however, also subjected to the intrinsic poor conductivity and agglomeration property, hence, the precise hybridization with high conductivity and active surface matrix is an effective strategy to solve these intractable problems. Herein, we exploit hierarchical nanohybrids via ionic hetero-assembly of 3D FeNi-LDH arrays on 2D Ti3C2Tx-based MXene nanosheets through mutual coupling synergy. The strong interfacial interaction and good electronic coupling between the FeNi-LDH arrays and Ti3C2Tx MXene nanosheets not only improve the structural stability, electrical conductivity, and electrolyte-accessibility but also greatly boost the redox reaction kinetics. The obtained Fe1Ni3-LDH/Ti3C2Tx-MXene energy materials reveal prominent conductivity, superior capacitance behavior, and the constructed symmetric supercapacitor demonstrates outstanding energy densities of 94.1 Wh Kg(-1) and power density of 7431.8 W Kg(-1). This study offers a facile and efficient strategy for developing 2D MXene-based energy storage devices with a stable interface and favorable electrochemical performance.
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