Issue 7, 2022

Rapid electron/ion transport in CNT/LiTi2(PO4)3@C–N electrodes for aqueous lithium-ion batteries with high stability, flexibility and safety

Abstract

Self-supporting and flexible carbon nanotube/carbon-coated nitrogen-doped LiTi2(PO4)3 (CNT/LTP@C–N) hybrid films are manufactured via vacuum filtration. LTP@C–N is entangled into CNT networks to build a 3D conductive network. Such hybrid electrodes possess a large surface area, enhance the overall conductivity of these composite electrodes, and facilitate electrolyte infiltration, thereby resulting in advanced electrochemical properties. Typically, the CNT/LTP@C–N electrodes afford a high initial discharge capacity of 143 mA h g−1 at 1 C, considerable rate property (85 mA h g−1 at 30 C), and good cyclability (87.3% capacity retention after 1500 cycles at 5 C) in a non-aqueous electrolyte. When utilized as anodes for aqueous lithium-ion batteries (ARLBs), a high energy density (67 Wh kg−1 calculated from the mass of anode and cathode active materials) and long term cycling stability (capacity retention of 70.2% after 1000 cycles at 3 C) can be achieved.

Graphical abstract: Rapid electron/ion transport in CNT/LiTi2(PO4)3@C–N electrodes for aqueous lithium-ion batteries with high stability, flexibility and safety

Supplementary files

Article information

Article type
Research Article
Submitted
19 Dec 2021
Accepted
07 Feb 2022
First published
08 Feb 2022

Inorg. Chem. Front., 2022,9, 1373-1379

Rapid electron/ion transport in CNT/LiTi2(PO4)3@C–N electrodes for aqueous lithium-ion batteries with high stability, flexibility and safety

J. Lin, Z. Zhang, F. Xue, D. Long and Q. Li, Inorg. Chem. Front., 2022, 9, 1373 DOI: 10.1039/D1QI01577J

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