Core Viewpoint - The article discusses a significant breakthrough by Shenzhen Xinzhou Technology Co., Ltd. in the field of high-voltage lithium batteries, specifically the development of an innovative electrolyte additive (CBS) that enhances battery performance and safety under high voltage conditions [1][21]. Group 1: Innovation and Mechanism - The CBS additive is designed to address challenges associated with high-voltage operation, such as lattice oxygen loss and metal ion dissolution, which can lead to battery capacity degradation [2][4]. - CBS combines the structural advantages of carbonate and sulfate, creating a hybrid molecule that forms a stable SEI (Solid Electrolyte Interphase) and CEI (Cathode Electrolyte Interphase) to enhance battery performance [2][4]. Group 2: Performance Improvements - The use of CBS in NCM613 pouch batteries shows a capacity retention rate of 94% after 600 cycles at 25°C and 90% after 1000 cycles at 45°C, significantly outperforming the baseline electrolyte [7]. - In high-temperature storage tests at 60°C, batteries with CBS maintained a capacity retention of 90% after 30 days, with only 3% volume expansion, compared to just 13% capacity retention and 34% expansion for the baseline electrolyte [8]. - Safety tests indicate that the decomposition temperature of SEI formed with CBS increased from 124.89°C to 139.98°C, and CEI decomposition temperature rose from 93.11°C to 121.42°C, reducing the risk of thermal runaway [9]. Group 3: Versatility and Market Potential - CBS is not limited to the NCM system; it also shows excellent performance in other battery chemistries, such as LiCoO₂ and LiMn₀.₆Fe₀.₄PO₄, demonstrating strong capacity retention across various temperature conditions [16][17]. - The technology has garnered attention from leading industry players, indicating its potential for widespread application and commercial value in the electrolyte materials sector [22]. Group 4: Research and Development Strength - Xinzhou has invested heavily in R&D, with a team of nearly 1,000 and an annual investment exceeding 400 million yuan, ensuring a robust foundation for technological breakthroughs [23]. - The CBS additive's development is a result of collaboration with Southern University of Science and Technology, highlighting the importance of industry-academia partnerships in driving innovation [25].

Core Viewpoint - The battery industry is undergoing a new round of material upgrades driven by the demands of electric vehicles for lightweight and ultra-fast charging, as well as consumer electronics for thinness and long battery life. High-performance materials such as high-nickel cathodes and silicon-carbon anodes are accelerating their application [2]. Group 1: High-Performance Materials - High-voltage cathodes (4.5 V–4.7 V) are becoming a key focus in the industry due to their ability to enhance energy density and fast charging capabilities. However, issues such as electrolyte oxidation and transition metal ion dissolution pose challenges to battery lifespan and safety [2][4]. - The research team has developed a hybrid molecule CBS (Carbonate Bis(Sulfate)) that combines the structural advantages of carbonates and sulfates, addressing the critical need for a stable electrode-electrolyte interface [4][5]. Group 2: Performance Improvements - The CBS additive significantly enhances battery lifespan, with a capacity retention rate of 94% after 600 cycles at 25°C, and 90% after 1000 cycles at 45°C, showing a much lower impedance growth compared to the baseline [6]. - At 60°C, batteries with CBS maintained a capacity retention rate of 90% after 30 days, with only 3% volume expansion, while the baseline electrolyte showed only 13% capacity retention and 34% volume expansion [7]. - Safety is greatly improved, with the decomposition temperature of the SEI formed by CBS rising from 124.8°C to 140°C, and the CEI decomposition temperature increasing from 93.1°C to 121.4°C, effectively delaying thermal runaway risks [8]. Group 3: Versatility Across Battery Systems - CBS shows advantages beyond the NCM system, performing well in other mainstream battery chemistries. For instance, in the LiCoO₂ system, the capacity retention rate exceeds 80% after 800 cycles at 25°C, compared to only 37% for the baseline [11]. - In the LiMn₀.₆Fe₀.₄PO₄ system, CBS effectively inhibits Mn²+ dissolution at high temperatures, demonstrating superior cycling stability compared to baseline and PS electrolytes [12]. Group 4: Research and Collaboration - The research on CBS was led by a team from Shenzhen New Zobang Technology Co., Ltd. and Southern University of Science and Technology, highlighting a strong collaborative effort in advancing battery chemistry and materials [16]. - Since the release of the CBS technology, multiple leading industry players have shown interest, and the technology is being widely applied in the ICT industry. The company is also focusing on intellectual property protection and value conversion [17].