Towards high-energy-density lithium-ion batteries: Strategies for developing high-capacity lithium-rich cathode materials
Towards high-energy-density lithium-ion batteries: Strategies for developing high-capacity lithium-rich cathode materials
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DOI：
10.1016/j.ensm.2020.11.008
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发表时间：
2021
影响因子：
20.4
通讯作者：
Shuoqing Zhao;Ziqi Guo;K. Yan;Shuwei Wan;Fengrong He;Bing Sun;Guoxiu Wang
中科院分区：
文献类型：
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作者：
Shuoqing Zhao;Ziqi Guo;K. Yan;Shuwei Wan;Fengrong He;Bing Sun;Guoxiu Wang
随着高能量密度锂离子电池需求的不断增长，具有高比容量和低成本的层状富锂正极材料被广泛认为是下一代锂离子电池最有吸引力的候选材料之一。然而，电压衰减、容量损失和反应动力学缓慢等问题几十年来阻碍了其进一步商业化。人们一直致力于开发高性能富锂正极材料，强调了改进策略作为潜在方法的重要性。在此，我们总结了提高下一代高能量密度锂离子电池层状富锂正极材料性能的各种策略。其中包括表面工程、元素掺杂、成分优化、结构工程和电解质添加剂，重点介绍相应技术的效果和作用机制。在接下来的部分中，我们将阐述设计高性能富锂正极材料以及弥合实验室与实际应用之间差距的机遇和挑战。
With the growing demand for high-energy-density lithium-ion batteries, layered lithium-rich cathode materials with high specific capacity and low cost have been widely regarded as one of the most attractive candidates for next-generation lithium-ion batteries. However, issues such as voltage decay, capacity loss and sluggish reaction kinetics have hindered their further commercialization for decades. Intensive investigations have been devoted to developing high-performance lithium-rich cathode materials, highlighting the importance of improvement strategies as a potential approach. Herein, we summarize various strategies for improving performances of layered lithium-rich cathode materials for next-generation high-energy-density lithium-ion batteries. These include surface engineering, elemental doping, composition optimization, structure engineering and electrolyte additives, with emphasis on the effect and functional mechanism of corresponding techniques. In the subsequent section, we illustrate opportunities and challenges for designing high-performance lithium-rich cathode materials and bridging the gap between the laboratory and practical applications.