中国“巨型充电宝”破局“锂依赖”，钠离子电池有望成为中国第四张“国际绿能名片”

Core Viewpoint - The world's first 100 MWh sodium-ion battery energy storage station has been officially put into operation in Qianjiang, Hubei, marking a significant leap in China's independent research and large-scale commercial application of sodium-ion battery technology [1][5]. Group 1: Project Overview - The energy storage station can store 100,000 kWh of electricity, enough to meet the daily electricity needs of approximately 12,000 ordinary households [1]. - The project sets a world record for the scale of sodium-ion battery storage and aims to alleviate China's strategic dependence on lithium resources amid increasing international energy competition [1][5]. Group 2: Performance Breakthroughs - The storage station has achieved three major breakthroughs: long lifespan, wide temperature range, and high power [1]. - Sodium-ion batteries maintain 90% capacity at -20°C and can operate stably at 60°C, significantly reducing reliance on temperature control systems [2]. Group 3: Material and Production Innovations - The development of fully domestically produced positive and negative electrode materials faced challenges in performance stability and cost, which were overcome by innovative research [3][4]. - The team developed a copper-iron-manganese-based positive electrode material that eliminates the use of precious metals and enhances cycle stability, laying the foundation for commercial application [3]. - A coal-based hard carbon technology was developed for the negative electrode, utilizing abundant domestic coal resources, which significantly reduces material costs [3]. Group 4: International Impact and Market Outlook - China's sodium-ion technology is becoming a "new green energy business card" globally, with significant patent holdings and rapid industrialization capabilities [5]. - The country has shifted from being a participant to a leader in international standards for sodium-ion technology, with multiple standards being established since 2021 [5]. - Sodium-ion batteries are expected to capture over 20% market share in the renewable energy sector by 2030, serving as a price stabilizer for lithium resources [5]. - The technology offers a replicable green energy path for developing countries, leveraging local sodium resources to reduce dependence on imported lithium [5].