DataVXACS Energy LettersPaper
journal article·2024-10-11

Decoupling Ion-Electron Transport in Thick Solid-State Battery Electrodes

Amin Song, Wujiu Zhang, Li Ma, Yicheng Lai, Yaohua Zhao, Jifu Zhu, Mengjie Huang, Lei Wang, Lei Dong, Nan Li, Chao Shen, Keyu Xie

ACS Energy Letters· Volume 9· Issue 10
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Source abstract

Abstract

Thick electrode architecture, promising better energy storage performance in solid-state batteries (SSBs), requires an optimized ion permeation network design. Unfortunately, ignoring the complex ion-electron coupling, the single ion diffusion optimized array electrodes have an unbalanced energy/power density issue. Hence, a vascularized electrode with a homogeneous electronic/ionic transport network is proposed. By decoupling the ion-electron transport process, a multifactor correlated thick electrode design criterion is established. The competitive effects of space and mass of the active/inactive components are considered for architecture optimization and performance improvement. The optimized LiFeO 4 (LFP) electrode ensures high-rate operation at ultrahigh areal capacity, achieving power densities exceeding 1600 W kg –1 . The solid-state pouch cells exhibit long-term cyclability, providing high energy/power density (approximately 200 Wh kg –1, 687 W kg –1 ) and thermal/mechanical tolerance. Furthermore, bipolar stacking enables pouch cells to have a high voltage and volumetric energy density. This work lays a solid foundation for the commercial application of thick electrodes, illuminating the future of industrial solid-state batteries.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi’an 710072, China

Queen Mary University of London Engineering School, Northwestern Polytechnical University, Xi’an 710072, China

Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong 999077, China

Institute of Clean Energy, Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang 215400, China

Shaanxi Union Research Center of University and Enterprise for Cathode Materials of LIBs, Xi’an 710072, China

Funding

National Safety Academic Fund · National Key Research and Development Program of China · State Key Laboratory of Solidification Processing · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Hong Kong Polytechnic University · Natural Science Foundation of Shaanxi Province · Shaanxi Province Postdoctoral Science Foundation · Innovation Team of Shaanxi Province · Shaanxi Laboratory of Aerospace Power

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