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Leveraging neutron depth profiling analysis technology, Chinese researchers have for the first time precisely illuminated the pivotal flaws within the single-layer cathode of all-solid-state lithium batteries, revealing a pronounced longitudinal gradient in lithium concentration. By achieving a uniform lithium concentration across the electrode's thickness, this discovery furnishes a foundational experiment for the design of gradient electrodes, advancing both the scientific comprehension and engineering deployment of all-solid-state lithium batteries. This cutting-edge technique offers a non-destructive, high-sensitivity method to track lithium-ion transport, providing pinpoint guidance for enhancing battery performance. The groundbreaking findings have been published in Energy & Environmental Science.
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