Preintercalation Strategy in Manganese Oxides for Electrochemical Energy Storage: Review and Prospects
Preintercalation Strategy in Manganese Oxides for Electrochemical Energy Storage: Review and Prospects
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DOI：
10.1002/adma.202002450
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发表时间：
2020-11
影响因子：
29.4
通讯作者：
Qinghe Zhao;Aoye Song;Shouxiang Ding;Runzhi Qin;Yanhui Cui;Shuning Li;F. Pan
中科院分区：
文献类型：
--
作者：
Qinghe Zhao;Aoye Song;Shouxiang Ding;Runzhi Qin;Yanhui Cui;Shuning Li;F. Pan
锰氧化物（MnO 2）是用于各种电池应用的有前景的阴极材料，包括Li离子、Na离子、Mg离子和Zn离子电池等，因为它们的低成本和高容量然而，MnO 2阴极的实际应用受到一些关键问题的限制，包括低的电子电导率、低的放电深度利用率、缓慢的扩散动力学和循环时的结构不稳定性。将离子/分子预嵌入到具有/不具有结构重构的晶体结构中提供了必要的优化以缓解这些问题。在这里，预插层策略在提高电子导电性，激活更多的活性位点，促进扩散动力学，并稳定MnO 2阴极材料的结构完整性的内在优势和机制进行了总结。还讨论了与预插层策略相关的当前挑战，沿着其在下一代电池的高性能MnO 2阴极设计中的实施的未来研究和开发前景。
Manganese oxides (MnO2) are promising cathode materials for various kinds of battery applications, including Li‐ion, Na‐ion, Mg‐ion, and Zn‐ion batteries, etc., due to their low‐cost and high‐capacity. However, the practical application of MnO2 cathodes has been restricted by some critical issues including low electronic conductivity, low utilization of discharge depth, sluggish diffusion kinetics, and structural instability upon cycling. Preintercalation of ions/molecules into the crystal structure with/without structural reconstruction provides essential optimizations to alleviate these issues. Here, the intrinsic advantages and mechanisms of the preintercalation strategy in enhancing electronic conductivity, activating more active sites, promoting diffusion kinetics, and stabilizing the structural integrity of MnO2 cathode materials are summarized. The current challenges related to the preintercalation strategy, along with prospects for the future research and development regarding its implementation in the design of high‐performance MnO2 cathodes for the next‐generation batteries are also discussed.