Group 1 - All-solid-state lithium batteries are recognized as the "next generation energy revolution" technology, but challenges such as cycle stability and energy density enhancement need to be addressed through the "visualization" detection of lithium elements to understand the internal reaction mechanisms of electrodes [1] - Recent collaboration between China National Nuclear Corporation's China Institute of Atomic Energy and Tsinghua University Shenzhen International Graduate School utilized neutron depth profiling technology to reveal key defects in traditional single-layer cathodes of all-solid-state lithium batteries, confirming a significant vertical lithium concentration gradient for the first time [1] - The research achieved a uniform distribution of lithium concentration in the thickness direction of the electrode, providing strong experimental evidence for the core design work of gradient electrodes, contributing significantly to the basic scientific understanding and engineering applications of all-solid-state lithium batteries [1] Group 2 - Neutron depth profiling technology is an advanced nuclear analysis technique that allows for "non-destructive CT scanning" of materials, enabling the tracking of lithium ion transport during battery charge and discharge processes [2] - This technology acts as a "visualization tool" for lithium distribution in battery research, providing precise navigation for optimizing battery design and enhancing performance [2] - The neutron depth profiling analysis team at the Institute of Nuclear Physics has developed internationally leading neutron depth profiling devices and methods, supporting technological innovation in fields such as nuclear industry, semiconductors, and lithium batteries [2]