锰基正极材料的革新之旅（下）：技术突破

Manganese-based Cathode Materials - Manganese-based cathode materials are gaining attention for their potential in lithium-ion batteries due to their unique physical and chemical properties [1][2] - Anhui Bosh High-Tech New Materials Co Ltd is a leading company in the manganese-based cathode material industry with a market share of over 30% [3] - The company has completed a full industry chain layout from manganese ore to manganese-based precursor materials and comprehensive recycling [3] Technological Advancements - Bosh High-Tech has established a research institute for new product development and market promotion [4] - The company is focusing on cost reduction and process optimization through its engineering institute [16] - A science institute has been set up to explore new technologies and materials that may emerge in the next 3-5 years [17] Four Manganese Oxide (Mn3O4) vs Manganese Dioxide (MnO2) - Mn3O4 is currently priced 3,000 RMB/ton lower than MnO2 [7] - Mn3O4 has a 12% higher manganese content compared to MnO2, potentially reducing the amount of precursor material needed [7] - Mn3O4 has significantly lower magnetic impurity content (less than 100 ppb) compared to MnO2 (5-10 ppm) [8] - Mn3O4-based lithium manganate has achieved comparable performance to MnO2-based lithium manganate in terms of compaction density (2.9-3.0) and storage performance [9] Future Applications - Manganese-based cathode materials are expanding from digital and two-wheeled vehicle applications to power and energy storage markets [14] - High-voltage nickel-manganese lithium (Ni-Mn-Li) is being developed as a potential replacement for medium-nickel ternary materials, with 50% lower cost and energy density of 220-260 Wh/kg [26] - Potential application areas for Ni-Mn-Li include light vehicles (A0 and A class), rail transportation, and grid frequency regulation [26] - In solid-state batteries, manganese-based cathode materials show promise in high-capacity (lithium-rich manganese-based) and high-voltage (nickel-manganese lithium) applications [24] Performance Metrics - Current manganese-based cathode materials offer a capacity of 140mAh/g and energy density of 650Wh/kg [12] - Advanced manganese-based materials for solid-state batteries are targeting capacities of 300mAh/g and energy densities of 900Wh/kg [27] Industry Challenges - The main challenges for manganese-based materials in larger markets like energy storage and automotive are cycle life and calendar life [27] - Future research directions need to focus on improving these performance metrics to enable broader applications [27]