Bridging particle-scale lithiation mechanisms and macroscopic performance in high-energy density Si anodes via time-resolved full 3D visualisation

Key Points

• This research aims to connect small-scale lithiation mechanisms with the larger performance of silicon anodes in lithium-ion cells.
• Utilized 4D synchrotron nano-tomography to visualize electrode characteristics.
• Assessed particle-resolved strain and deformation during lithiation processes.
• Analyzed the correlation between microstructural changes and macroscopic performance.
• Identified significant link between particle-scale strain and overall electrode performance.
• Revealed complex chemo-mechanical interactions within high content silicon electrodes.
• Provided detailed visualization of lithiation dynamics affecting battery efficiency.

Abstract