关注公众号，点击公众号主页右上角" ··· "，设置星标 "⭐" ，关注 鑫椤锂电 资讯~ 本文来源： 新宙邦 当前， 随着电动汽车与消费电子对电池能量密度要求 的 日益 提高 ，提 升 工作电压已成为 提升锂离子电池能量密度的主流路径。然而，高电压 工况下， 电解液 易 发生 氧 化 分 解 产 气、过渡金属离子溶解等一系列问题，严重 威胁 电池寿 命与安全 ， 成为 行业 发展 的 主 要 桎 梏 。继TPP、EBC功能添加剂后，近日，深圳新宙邦科技股份有限公司 （ 以下 简 称 " 新宙邦 " ） 在高压锂电池基础研究领域取得重大突破 —— 一 款 创新型电解液添加 剂 （ CBS ） 研究成果 ， 并 联合 南方科技大学 在国际知名期刊《 Sma l l 》 上 发 表 该 研究成 果 。 这一技术突破 为提升高压锂离子电池的综合性能开辟了全新途径。 核心创新：双结构融合， 破解高电压难题 对于 LiNi₀.₆Co₀.₁Mn₀.₃O₂ （ NCM613 ）等高镍正极 材料 而言， 在 4.4 V 甚至更高电压下运行，可显著提升电 池能量密度，但也极易引发晶格氧流失、过渡金属溶解、电解液持续氧化等 连锁 ...

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].