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

Autor: Checko S; Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States., Ju Z; Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States., Zhang B; Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States., Zheng T; Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States., Takeuchi ES; Institute of Energy: Sustainability, Environment, and Equity, Stony Brook University, Stony Brook, New York 11794, United States.; Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States.; Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States.; Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States., Marschilok AC; Institute of Energy: Sustainability, Environment, and Equity, Stony Brook University, Stony Brook, New York 11794, United States.; Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States.; Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States.; Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States., Takeuchi KJ; Institute of Energy: Sustainability, Environment, and Equity, Stony Brook University, Stony Brook, New York 11794, United States.; Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States.; Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States.; Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States., Yu G; Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States.
Jazyk: angličtina
Zdroj: Nano letters [Nano Lett] 2024 Feb 07; Vol. 24 (5), pp. 1695-1702. Date of Electronic Publication: 2024 Jan 23.
DOI: 10.1021/acs.nanolett.3c04437
Abstrakt: 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 4 (LFP) cathodes are fabricated with a multidimensional conductive architecture that allows for fast-charging capability, reaching a specific capacity of 94 mAh g -1 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 (Ti 3 C 2 T x ) nanosheets. The CNTs form a porous coating layer and improve local electron transport across the LFP surface, while the Ti 3 C 2 T x 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.
Databáze: MEDLINE
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