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A β-FeOOH/MXene sandwich for high-performance anodes in lithium-ion batteries

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Abstract

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 β-FeOOH/Ti3C2Tx MXene sandwich by an intercalation of β-FeOOH nanorods within single-layer Ti3C2Tx MXene flakes. After 100 cycles, the β-FeOOH/Ti3C2Tx 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 β-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.

Graphical abstract: A β-FeOOH/MXene sandwich for high-performance anodes in lithium-ion batteries

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Article information


Submitted
27 Apr 2020
Accepted
05 Jun 2020
First published
05 Jun 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

A β-FeOOH/MXene sandwich for high-performance anodes in lithium-ion batteries

L. He, C. Tan, C. Sheng, Y. Chen, F. Yu and Y. Chen, Dalton Trans., 2020, Advance Article , DOI: 10.1039/D0DT01531H

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