海南大学研发新型海水电池实现178天“超长待机”

Core Insights - The "smart nano shield" technology developed by Hainan University and the National University of Singapore significantly enhances the performance of zinc batteries in natural seawater, achieving a standby time of 4268 hours (approximately 178 days) and extending battery life by 16 times compared to unprotected batteries [1][2] Group 1: Technology Breakthrough - The research addresses the critical issue of zinc anode corrosion in seawater batteries, which is caused by the strong corrosiveness of chloride ions, leading to rapid performance degradation [1] - The innovative use of ultrasonic spraying technology to create a sub-10 micron coating of inexpensive zinc acetylacetonate (ZA) material provides a "dual defense" for the zinc anode [1] - The coating's negatively charged surface repels chloride ions while promoting orderly deposition of zinc ions, balancing corrosion prevention and efficient ion transport [1] Group 2: Application Prospects - The technology has clear application prospects, including long-term energy storage for offshore wind and solar projects, powering sensors and communication bases in marine ranches and deep-sea cages, and supporting island power supply while reducing reliance on diesel generators and freshwater [2] - The low cost and scalability of the ultrasonic spraying process lay a solid foundation for industrialization, potentially offering new solutions for marine energy supply [2]