微分电化学质谱:研究锂离子电池的一项关键技术

Differential electrochemical mass spectroscopy: A pivotal technology for investigating lithium-ion batteries

锂离子电池的安全性问题在很大程度上限制了其在纯电动汽车、规模储能等领域的广泛应用。电池材料|电解质界面副反应所产生的可燃性气体是锂离子电池安全隐患的首要原因。微分电化学质谱是解析锂离子电池产气副反应机制的强有力研究技术。本文综述了微分电化学质谱的发展历程、工作原理、技术要点及其在锂离子电池安全性研究中的应用,并展望了微分电化学质谱在储能领域的机遇、挑战和策略。

Safety issues of lithium-ion batteries are becoming prominent with its application in electric vehicle and large-scale energy storage fields.Flammable gases evolved from electrode|electrolyte interface play an important role on the batteries'safety characteristics.Fortunately,differential electrochemical mass spectrometry(DEMS)as a powerful technology provides exploitable strategies for understanding the gas-related parasitic reaction mechanisms.The review covers the history,basics,know-how,and applications in safety researches of DEMS.In addition,emerging opportunities,critical challenges,future directions and strategies are particularly highlighted.