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Fast-Charging, Binder-Free Lithium Battery Cathodes Enabled via Multidimensional Conductive Networks. | LitMetric

Fast-Charging, Binder-Free Lithium Battery Cathodes Enabled via Multidimensional Conductive Networks.

Nano Lett

Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States.

Published: February 2024

AI Article Synopsis

Article Abstract

To meet the growing demands in both energy and power densities of lithium ion batteries, electrode structures must be capable of facile electron and ion transport while minimizing the content of electrochemically inactive components. Herein, binder-free LiFePO (LFP) cathodes are fabricated with a multidimensional conductive architecture that allows for fast-charging capability, reaching a specific capacity of 94 mAh g at 4 C. Such multidimensional networks consist of active material particles wrapped by 1D single-walled carbon nanotubes (CNTs) and bound together using 2D MXene (TiCT) nanosheets. The CNTs form a porous coating layer and improve local electron transport across the LFP surface, while the TiCT nanosheets provide simultaneously high electrode integrity and conductive pathways through the bulk of the electrode. This work highlights the ability of multidimensional conductive fillers to realize simultaneously superior electrochemical and mechanical properties, providing useful insights into future fast-charging electrode designs for scalable electrochemical systems.

Download full-text PDF

Source
http://dx.doi.org/10.1021/acs.nanolett.3c04437DOI Listing

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