High-power lithium-ion batteries (LIBs) are critical for power-intensive applications; however, their development is largely hindered by the lack of anode materials that have stability and high capacity at high charging/discharging rates. Herein, a cationic disordering strategy is reported to build an ideal high-power anode with boosted intercalation kinetics and a stable framework. A novel titanium niobate (TiNb₂O₇) anode with unique predistorted Nb(Ti)O₆ octahedrons (pd-TNO) is developed by introducing cation disorder, which allows ultrafast Li⁺ storage within seconds and exceptional stability over long cycling at high rates. The pd-TNO delivers an outstanding specific capacity of 153 mAh g⁻¹ at 100 C, 20 times higher than that of conventional TNO anodes without cationic disordering, and retains 42.8% of the capacity after 15,000 cycles. Using the pd-TNO anode, a high-power LIB with an unprecedented power density of 91,197 W kg⁻¹ at 200 C, which is approximately eight times higher than that of the advanced commercial high-power anode Li₄Ti₅O₁₂ (11,813 W kg⁻¹ at 50 C), is demonstrated. Importantly, the pd-TNO is prepared under ambient conditions via a high-throughput process, and it exhibits considerable potential for scalability for practical applications.

中文翻译：

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用于大功率电池的空前超高倍率和超稳定阳极通过阳离子无序

高功率锂离子电池 (LIB) 对于功率密集型应用至关重要；然而，由于缺乏在高充电/放电率下具有稳定性和高容量的负极材料，它们的发展在很大程度上受到了阻碍。本文报道了一种阳离子无序策略来构建具有增强的插层动力学和稳定框架的理想高功率阳极。通过引入阳离子无序性，开发了一种具有独特预畸变 Nb(Ti)O ₆八面体 (pd-TNO)的新型铌酸钛 (TiNb ₂ O _{7 ) 负极，可在数秒内实现超快 Li} ⁺存储，并在高倍率下长时间循环具有出色的稳定性. pd-TNO 具有 153 mAh g ^{-1的出色比容量}在 100 C 时，比没有阳离子无序的传统 TNO 阳极高 20 倍，并且在 15,000 次循环后保持 42.8% 的容量。使用 pd-TNO 阳极，高功率 LIB 在 200 C 时具有 91,197 W kg ^{-1的前所未有的功率密度，大约是先进的商业高功率阳极 Li} ₄ Ti ₅ O ₁₂的 8 倍( 11,813 W kg ^-1在 50 C)，被证明。重要的是，pd-TNO 是在环境条件下通过高通量工艺制备的，并且在实际应用中表现出相当大的可扩展性潜力。