中国空间站开展锂离子电池在轨实验

Core Viewpoint - The project "In-situ Electrochemical Optical Research of Lithium-ion Batteries for Space Applications" has commenced aboard the Chinese space station, aiming to study the effects of microgravity on battery performance and internal processes [1][3]. Group 1: Project Overview - The project is being conducted by the Shenzhou 21 astronaut crew, with researcher Zhang Hongzhang serving as the payload expert [1][3]. - Lithium-ion batteries are critical for modern space missions due to their high energy density, long cycle life, and safety [1][3]. Group 2: Research Significance - The research focuses on the distribution of chemical substances in the electrolyte, which is a key factor influencing battery power and lifespan [1][3]. - Microgravity provides an ideal environment to study ion transport and insertion/extraction processes without the interference of gravity [1][3]. Group 3: Experimental Challenges and Innovations - The microgravity environment presents new challenges, as the behavior of liquids within the battery differs significantly from ground conditions, potentially affecting performance and safety [1][3]. - The project aims to directly observe and analyze the impact of microgravity on critical internal processes of the battery, providing scientific basis for enhancing spacecraft energy systems [1][3]. Group 4: Experimental Process - The payload expert will conduct in-situ optical observation experiments, capturing the entire growth process of lithium dendrites and ensuring precise execution and monitoring of the experiments [2][4]. - The active involvement of the payload expert is crucial for discovering new phenomena and achieving significant results [2][4]. Group 5: Future Implications - The advancement of this experiment is expected to break through the cognitive bottleneck of the interaction between gravitational and electric fields, further developing electrochemical theory [5]. - The findings will aid in optimizing current battery systems in orbit and designing the next generation of high-energy, high-safety space batteries [5].