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Updated: Oct 9, 2025

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Published on: August 22, 2025
3D V2CT-rGO Architectures with Optimized Ion Transport Channels toward Fast Lithium-Ion Storage
Pengjun Zhang1, Changda Wang1, Shiqiang Wei1
1National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, P. R. China.
Abstract:
Two-dimensional (2D) MXene materials show great potential in energy storage devices. However, the self-restacking of MXene nanosheets and the sluggish lithium-ion (Li+) kinetics greatly hinder their rate capability and cycling stability. Herein, we interlink 2D V2CT MXene nanosheets with rGO to construct a 3D porous V2CT-rGO composite. X-ray spectroscopy study reveals the close interfacial contact between V2CT and rGO via electron transfer from V to C atoms. Benefiting from the close combination and optimized ion transport channel, V2CT-rGO offers a high-rate Li+ storage performance and excellent cycling stability over 2000 cycles with negligible capacity attenuation. Moreover, it exhibits a dominant mechanism of intercalation pseudocapacitance and efficient Li+ transport proved by density functional theory calculation. This rationally designed 3D V2CT-rGO has implications for the study of the MXene composite's structure and energy storage devices with high rate and stability.
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