Enhancing cathode composites with conductive alignment synergy for solid-state batteries
Date
2025-01-03
Journal Title
Journal ISSN
Volume Title
Publisher
Science Advances
Abstract
Enhancing transport and chemomechanical properties in cathode composites is crucial for the performance of solid-state batteries. Our study introduces the filler-aligned structured thick (FAST) electrode, which notably improves mechanical strength and ionic/electronic conductivity in solid composite cathodes. The FAST electrode incorporates vertically aligned nanoconducting carbon nanotubes within an ion-conducting polymer electrolyte, creating a low-tortuosity electron/ion transport path while strengthening the electrode’s structure. This design not only mitigates recrystallization of the polymer electrolyte but also establishes a densified local electric field distribution and accelerates the migration of lithium ions. The FAST electrode showcases outstanding electrochemical performance with lithium iron phosphate as the active material, achieving a high capacity of 148.2 milliampere hours per gram at 0.2 C over 100 cycles with substantial material loading (49.3 milligrams per square centimeter). This innovative electrode design marks a remarkable stride in addressing the challenges of solid-state lithium metal batteries.
Description
This article was originally published in Science Advances. The version of record is available at: https://doi.org/10.1126/sciadv.adr4292.
Copyright © 2025 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
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Citation
Cao, Zhang, Xinxin Yao, Soyeon Park, Kaiyue Deng, Chunyan Zhang, Lei Chen, and Kelvin Fu. “Enhancing Cathode Composites with Conductive Alignment Synergy for Solid-State Batteries.” Science Advances 11, no. 1 (January 3, 2025): eadr4292. https://doi.org/10.1126/sciadv.adr4292.