Journal
DALTON TRANSACTIONS
Volume 49, Issue 27, Pages 9268-9273Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0dt01531h
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Funding
- 1000 Youth Talents Plan of the National Natural Science Foundation of China [51773092, 21975124]
- Research Foundation of State Key Lab [ZK201717]
- Shuang Chuang Plan of Jiangsu province
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FeOOH is one of the earth abundant and high-capacity anode materials for lithium-ion batteries (LIBs), but faces problems of inevitable structure collapse and thus poor capacity retention. Herein, we report a composite of beta-FeOOH/Ti(3)C(2)T(x)MXene sandwich by an intercalation of beta-FeOOH nanorods within single-layer Ti(3)C(2)T(x)MXene flakes. After 100 cycles, the beta-FeOOH/Ti(3)C(2)T(x)composite retains a capacity of 937.5 mA h g(-1)at 200 mA g(-1), and 671.4 mA h g(-1)at 1 A g(-1). The composite as an anode in LIB delivers improved cyclability and better high-rate performance compared to pristine beta-FeOOH, which result from the excellent conductivity of single-layer MXene, facilitating mass transport by the sandwich structure. This work provides a strategy for the design of electrodes, particularly in Na-ion and K-ion batteries, which involve active materials that experience volume change and structural damage during cycling.
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