Issue 44, 2023

TiFeNb10O29−δ anode for high-power and durable lithium-ion batteries

Abstract

A new Fe-substituted TiFeNb10O29−δ (TFNO) anode is proposed. TFNO possesses a defective and polycrystalline ReO3 Roth–Wadsley shear structure with a slightly larger lattice volume. Electrochemical behavior results and density functional theory (DFT) calculations show that TFNO can facilitate the kinetics of electron/Li+ transportation and demonstrates pseudocapacitive behavior. Consequently, TFNO exhibits superior high rate capacity and cycling stability compared to pristine TNO, offering 100 mA h g−1 at an ultrahigh rate of 50C and a high capacity retention of 86.7% over 1000 cycles at 10C. This work reveals that TFNO could be a promising anode material for fast-charging, stable, and safe LIBs.

Graphical abstract: TiFeNb10O29−δ anode for high-power and durable lithium-ion batteries

Supplementary files

Article information

Article type
Communication
Submitted
14 fev 2023
Accepted
28 apr 2023
First published
28 apr 2023

Chem. Commun., 2023,59, 6710-6713

TiFeNb10O29−δ anode for high-power and durable lithium-ion batteries

G. Wang, Y. Sun, Y. Sun, C. Yan, Y. Pang, T. Yuan and S. Zheng, Chem. Commun., 2023, 59, 6710 DOI: 10.1039/D3CC00678F

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