摘要
电池制造有希望制备出具有可精细调控微观结构, 几何形状和厚度的高性能电极。然而, 厚电极面临着电子和锂离子传输缓慢的挑战。在这里, 我们制备出–种具有导向结构的厚电极, 作为实现高能锂离子电池的替代方法。开发了借助胶粘剂和单壁碳纳米管 (SWCNT) 的冷冻干燥工艺, 用于制备基于LiNi0.8Co0.1Mn0.1O2 (NCM811) 作为代表性正极电极材料的导向结构厚电极。1 mm厚的NCM811正极具有101 mg·cm−2的面载量, 可实现203.4 mAh·g-1的高比容量。此外, 已成功证明了所制备的超厚电极具有538 mg·cm-2的高面载量和99.5 wt%的高活性物质含量, 实现了93.4 mAh·cm−2极高面积容量, 与商用电极相比提高了30倍以上。该设计为能源存储设备和其他相关实际应用的环保, 可扩展和可持续的制造过程开辟了一条有效的途径。
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Acknowledgements
This study was financially supported by the National Key Research and Development Program of China (No. 2016YFB0100300), the National Natural Science Foundation of China (Nos. U1864213 and 51871113) and the Key Project of Scientific Research Plan of Colleges and Universities in Xinjiang (No. XJEDU2018I015).
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Zhou, CC., Su, Z., Gao, XL. et al. Ultra-high-energy lithium-ion batteries enabled by aligned structured thick electrode design. Rare Met. 41, 14–20 (2022). https://doi.org/10.1007/s12598-021-01785-2
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DOI: https://doi.org/10.1007/s12598-021-01785-2