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 the lifespan by 16 times compared to unprotected batteries [1][2]. Group 1: Technology Development - The technology 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 thick coating from inexpensive zinc acetylacetonate (ZA) material establishes a "dual defense" for the zinc anode [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 for marine ranching and deep-sea cages, and reducing reliance on diesel generators and freshwater for island power supply [2]. - The low cost and scalability of the ultrasonic spraying process lay a solid foundation for industrialization, potentially providing new solutions for marine energy supply [2].

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]

Group 1 - The ocean economy is a significant driver of GDP growth, with the national marine production value expected to exceed 10 trillion yuan in 2024, accounting for 7.8% of the GDP, and contributing 11.5% to economic growth [1][8] - The government has highlighted "deep-sea technology" in its reports, indicating its importance alongside commercial aerospace and low-altitude economy, suggesting a rapid development potential in deep-sea equipment and exploration [1][8] - The deep-sea technology sector is identified as a key pillar for building a maritime power, encompassing three main areas: deep-sea materials, deep-sea equipment manufacturing, and deep-sea digital applications [3][17] Group 2 - Various provinces and cities are accelerating the development of marine economy, with policies focusing on high-end, intelligent, and green development, and establishing multi-level industrial systems [2][13] - Shanghai's marine industry development plan (2025-2035) proposes a "3+5+X" industrial system, while Guangdong's regulations emphasize support for eight emerging marine industry clusters [2][14] - The deep-sea materials sector is crucial for deep-sea technology, involving structural and buoyancy materials necessary for the development of marine resources, with a focus on high-performance steel, alloy materials, and composite materials [3][21] Group 3 - The deep-sea equipment sector is essential for supporting deep-sea development, facing challenges from complex underwater environments, with significant growth in China's shipbuilding industry, which saw a 13.8% increase in completed shipbuilding volume in 2024 [4][26] - The deep-sea digitalization and intelligence sector is a vital direction for deep-sea technology development, aiming to create a "digital ocean" that enhances marine decision-making and governance through advanced information technologies [5][17] - The report suggests focusing on marine engineering equipment manufacturing, marine equipment components, and marine observation instruments as key areas for investment [4][26]