Research Focus

Advanced characterization techniques are pivotal for unraveling interfacial reaction mechanisms and guiding material design in solid-state batteries. To address the ambiguous interfacial evolution between composite electrolytes and cathodes, we developed non-invasive, dynamic in situ monitoring methods. Ultrasonic imaging technology enables real-time, nondestructive observation of interfacial failure processes in solid-state pouch cells, precisely capturing electrolyte decomposition and gas evolution. Coupled with in situ XPS analysis, we elucidated the electronic state reconstruction and interfacial side reactions between polymer segments and sulfide electrolytes. Guided by these insights, we proposed polymer polarity modulation strategies to enhance the oxidative stability and interfacial compatibility of composite electrolytes, enabling their integration with high-voltage cathodes. This research establishes a closed-loop paradigm of "dynamic interface analysis-reaction mechanism modeling-rational material design", accelerating the transition from empirical exploration to mechanism-driven innovation in solid-state battery development.

（1）Hanyu Huo*, Ming Jiang, Boris Mogwitz, Joachim Sann, Yuriy Yusim, Tong-Tong Zuo, Yannik Moryson, Philip Minnmann, Felix H. Richter, Chandra Veer Singh*, Jürgen Janek*, Angewandte Chemie International Edition, 2023, e202218044.

（2）Hanyu Huo, Kai Huang, Wei Luo*, Jintao Meng, Liangyi Zhou, Zhe Deng, Jiayun Wen, Yiming Dai, Zhimei Huang, Yue Shen*, Xiangxin Guo, Xiulei Ji, and Yunhui Huang*, ACS Energy Letters, 2022, 7, 2, 650–658.