Cracking-Controlled Slurry Coating of Mosaic Electrode for Flexible and High-Performance Lithium–Sulfur Battery

Luo，Yufeng1,2; Wang，Lei1; Wei，Zhenyao1,3; Huang，Qiyao1,2; Deng，Yonghong3; Zheng，Zijian1,2,4,5

2022

10.1002/aenm.202203621

Advanced Energy Materials   Impact Factor & Quartile

1614-6832

1614-6840

The realization of high-performance thick S cathodes is a critical step to achieve high energy density lithium–sulfur (Li–S) batteries. However, it normally requires a complicated and time-consuming fabrication processes to obtain high-performance S cathodes with high mass loading. On the other hand, thick S cathodes fabricated with high-speed slurry coating method show poor flexibility, capacity, and cycle life due to unpredictable electrode cracking. Herein, an industrial-speed cracking-controlled slurry coating method to generate mosaic-like cracks in the S cathode is developed, which provides vertical channels to facilitate the rapid diffusion of electrolyte, adequate space to accommodate the volume expansion during cycling, and strain-releasing structure to achieve high flexibility. With this simple method, thick Mosaic-S cathodes (9 mAh cm) provide outstanding energy density, long cycle life, and outstanding flexibility under dynamic bending. This work paves the way for scalable fabrication of high-performance S cathodes in the near future.

cracks flexible batteries lithium-sulfur batteries mosaic structures slurries

SCI

English

Others

Shenzhen Municipal Science and Technology Innovation Commission[SGDX20190816232209446] ; Innovation and Technology Fund-Guangdong-Hong Kong Technology Cooperation Funding Scheme[GHP/047/20GD] ; Science and Technology Bureau of Huangpu District[2020GH03]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000891053600001

WILEY-V C H VERLAG GMBH

2-s2.0-85142790827

Scopus

1.Laboratory for Advanced Interfacial Materials and Devices,School of Fashion and Textiles,The Hong Kong Polytechnic University,Hong Kong
2.Research Institute for Intelligent Wearable Systems,The Hong Kong Polytechnic University,Hong Kong
3.Department of Materials Science and Engineering,Shenzhen Key Laboratory of Solid-State Batteries,Southern University of Science and Technology,Shenzhen,China
4.Research Institute for Smart Energy,The Hong Kong Polytechnic University,Hong Kong
5.Department of Applied Biology and Chemical Technology,Faculty of Science,The Hong Kong Polytechnic University,Hong Kong

Luo，Yufeng,Wang，Lei,Wei，Zhenyao,等. Cracking-Controlled Slurry Coating of Mosaic Electrode for Flexible and High-Performance Lithium–Sulfur Battery[J]. Advanced Energy Materials,2022.

Luo，Yufeng,Wang，Lei,Wei，Zhenyao,Huang，Qiyao,Deng，Yonghong,&Zheng，Zijian.(2022).Cracking-Controlled Slurry Coating of Mosaic Electrode for Flexible and High-Performance Lithium–Sulfur Battery.Advanced Energy Materials.

Luo，Yufeng,et al."Cracking-Controlled Slurry Coating of Mosaic Electrode for Flexible and High-Performance Lithium–Sulfur Battery".Advanced Energy Materials (2022).