Multivalent-Ion versus Proton Insertion into Battery Electrodes
Multivalent-Ion versus Proton Insertion into Battery Electrodes
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DOI：
10.1021/acsenergylett.0c01021
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发表时间：
2020-07-10
影响因子：
22
通讯作者：
Manthiram, Arumugam
中科院分区：
文献类型：
--
作者：
Park, Min Je;Asl, Hooman Yaghoobnejad;Manthiram, Arumugam
为了实现储能技术的可持续未来，替代电池化学物质，例如基于多价 (MV) 离子（即镁、锌、钙和铝离子）插入化学物质的电池化学物质，多年来引起了人们的极大兴趣。对于它们未来的发展，清楚地了解基础化学是绝对关键的。该观点强调了中压离子系统中载流子离子种类从中压离子向质子转变的倾向，特别是当水作为溶剂或添加剂掺入电解质中时，这直接与水提高中压离子迁移率的普遍观点相矛盾。最近的文献介绍了这种现象，强调迫切需要采用适当的分析技术来明确确定 MV 系统中电荷载流子离子的性质。
For a sustainable future in energy storage technology, alternative battery chemistries, such as those based on the insertion chemistry of multivalent (MV) ions (i.e., Mg, Zn, Ca, and Al ions), have received significant interest over the years. For their future development, a clear understanding of the underlying chemistry is absolutely critical. This Perspective highlights the propensity of the transition in the charge-carrier ion species from MV ions to protons in a MV-ion system, especially when water is incorporated into the electrolyte either as a solvent or an additive, directly contradicting the commonly held belief that water improves MV-ion mobility. Recent literature demonstrating this phenomenon is introduced, emphasizing the critical need to employ appropriate analytical techniques to unequivocally determine the nature of charge-carrier ions in MV systems.