Understanding and unveiling the electro‐chemo‐mechanical behavior in solid‐state batteries
Yunlei Zhong,
Xia Zhang,
Yong Zhang,
Peng Jia,
Yuebin Xi,
Lixing Kang,
Zhenjiang Yu
Affiliations
Yunlei Zhong
Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced Materials Suzhou Institute of Nano‐Tech and Nano‐Bionics, Chinese Academy of Sciences Suzhou China
Xia Zhang
Institute of Applied Materials Helmholtz Centre Berlin for Materials and Energy Berlin Germany
Yong Zhang
School of Electronic and Information Engineering Changshu Institute of Technology Changshu Jiangsu China
Peng Jia
State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology Jinan Shandong China
Yuebin Xi
State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology Jinan Shandong China
Lixing Kang
Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced Materials Suzhou Institute of Nano‐Tech and Nano‐Bionics, Chinese Academy of Sciences Suzhou China
Zhenjiang Yu
State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology Jinan Shandong China
Abstract Solid‐state batteries (SSBs) are attracting growing interest as long‐lasting, thermally resilient, and high‐safe energy storage systems. As an emerging area of battery chemistry, there are many issues with SSBs, including strongly reductive lithium anodes, oxidized cathodes (state of charge), the thermodynamic stability limits of solid‐state electrolytes (SSEs), and the ubiquitous and critical interfaces. In this Review, we provided an overview of the main obstacles in the development of SSBs, such as the lithium anode|SSEs interface, the cathode|SSEs interface, lithium‐ion transport in the SSEs, and the root origin of lithium intrusions, as well as the safety issues caused by the dendrites. Understanding and overcoming these obstacles are crucial but also extremely challenging as the localized and buried nature of the intimate contact between electrode and SSEs makes direct detection difficult. We reviewed advanced characterization techniques and discussed the complex ion/electron‐transport mechanism that have been plaguing electrochemists. Finally, we focused on studying and revealing the coupled electro‐chemo‐mechanical behavior occurring in the lithium anode, cathode, SSEs, and beyond.
