Research Focus

Interfacial chemo-mechanical stability research addresses the critical failure mechanisms of lithium metal and silicon anodes in solid-state batteries. Focusing on dendrite penetration and interfacial degradation, we propose a stability regulation mechanism under multiphysics coupling, transcending conventional single-property optimization by synergizing chemical compatibility, electronic insulation, and mechanical compliance. By designing flexible functionalized interlayers, we significantly enhance interfacial wettability and block electron leakage, enabling uniform lithium deposition and long-term cycling stability. Through multiscale chemical characterization and chemo-mechanical modeling, we elucidate interfacial element interdiffusion, stress accumulation, and fracture evolution in silicon anodes, and develop adaptive interface modification strategies to mitigate parasitic reactions and mechanical mismatch. This work establishes a cross-scale theoretical framework and universal design principles for robust interfaces in high-energy-density solid-state batteries, accelerating the development of safe and efficient energy storage systems.

（1）Hanyu Huo*, Yang Bai, Sebastian Leonard Benz, Timo Weintraut, Shuo Wang, Anja Henss, Dierk Raabe*, Jürgen Janek*,  Advanced Materials, 2025, 2415006.

（2）Hanyu Huo*, Ming Jiang, Yang Bai, Shamail Ahmed, Kerstin Volz, Hannah Hartmann, Anja Henss, Chandra Veer Singh, Dierk Raabe*, Jürgen Janek*, Chemo-Mechanical Failure Mechanisms of the Silicon Anode in Solid-State Batteries, Nature Materials, 2024, 23 (4), 543-551.

（3）Hanyu Huo*, Jürgen Janek*, National Science Review, 2023, nwad098.

（4）Hanyu Huo*, Jürgen Janek*, ACS Energy Letters, 2022, 7, 11, 4005–4016.