期刊
ACS APPLIED ENERGY MATERIALS
卷 4, 期 8, 页码 7821-7828出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.1c01171
关键词
NiFe-LDH; Ti3C2 MXene; lithium-ion battery; lithium-ion capacitor; 2D material
资金
- Postgraduate Innovation Project in Hebei Province [CXZZBS2021131]
- National Research Council of Thailand (NRCT) [NRCT-RSA63001-19]
- Second Century Fund (C2F) Scholarship, Chulalongkorn University
A NiFe-LDH/Ti3C2 MXene hybrid with superior electrochemical performance for lithium storage was prepared and studied, showing great potential for application in energy storage.
Layered doubled hydroxides (LDHs) have aroused much attention in energy storage for their exchangeable anions and tunable interlayer spacing. However, poor electrical conductivity and aggregation of flakes cause huge volume changes and reduce accessible active sites, leading to inferior cycle stability and rate performance. Hence, a NiFe-LDH/Ti3C2 MXene hybrid with uniformly distributed NiFe-LDH nanoflakes decorated on MXene nanosheets through a simple hydrothermal reaction is prepared. Due to the synergism between the Ti3C2 MXene conductive frameworks and NiFe-LDH, NiFe-LDH/Ti3C2 MXene shows a superior electrochemical property for lithium storage. Its reversible capacity is 898.9 mAh g(-1) at 0.1 A g(-1), and even at 1 A g(-1), it still has 726.1 mAh g(-1), without capacity reduction in lithium-ion half-cells. In addition, the corresponding lithium-ion capacitor shows a higher energy density and power density, showing huge application prospect in lithium storage.
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