Manufacturing Water-Based Low-Tortuosity Electrodes for Fast-Charge through Pattern Integrated Stamping

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维普
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外文摘要：Achieving high energy density and fast charging of lithium-ion batteries can accelerate the promotion of electric vehicles.However,the increased mass loading causes poor charge transfer,impedes the electrochemical reaction kinetics,and limits the battery charging rate.Herein,this work demonstrated a novel pattern integrated stamping process for creating channels in the electrode,which benefits ion transport and increases the rate performance of the electrode.Meanwhile,the pressure applied during the stamping process improved the contact between electrode and current collector and also enhanced the mechanical stability of the electrode.Compared to the conventional bar-coated electrode with the same thickness of 155 pm(delivered a discharge capacity of 16 mAh g-1 at the rate of 3 C),the stamped low-tortuosity LiFePO4 electrode delivered 101 mAh g-1 capacity.Additionally,water was employed as a solvent in this study.Owing to its eco-friendliness,high scalability,and minimal waste generation,this novel stamping technique inspire a new method for the industrial-level efficient roll to roll fabrication of fast-charge electrodes.

外文关键词：

fast chargingkineticlithium-ion batteriestortuositywater solvent

作者：

Haoze Ren、Ying Wang、Daxian Cao、William Gedney、Tongtai Ji、Xiao Sun、Hongli Zhu

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作者单位：

Department of Mechanical and Industrial Engineering,Northeastern University,Boston MA 02115,USA

基金：

Advanced Manufacturing Office under Energy Efficiency and Renewable Energy(EERE)in United States Department of Energyuse of the Scanning Electron Microscope provided by the Boston Electron Microscopy Center at Northeastern University

项目编号：

DE-EE0009111

出版年：

2023

DOI：

10.1002/eem2.12584

能源与环境材料(英文)

CSCD

ISSN：

年,卷(期)：2023.6(4)

参考文献量26