徐正龙 | Interfacial Chemistry at the Negative Electrode in Multivalent Metal Batteries

香港理工大学工业及系统工程学系长聘副教授、智慧能源研究院、超精密加工国家重点实验室核心成员，深空探测研究中心管委会成员。课题组致力于先进能源材料和电化学机理研究，聚焦于钙离子电池、钠离子电池、锂硫电池、固态锂电池等领域，在 Chem. Soc. Rev., Nat. Commun., J. Am. Chem. Soc., Angew Chem. Int. Ed., Adv. Mater., Energy Environ. Sci., 等期刊上发表研究论文 100 余篇，他引用超过 8500 次，H 因子 46，获得 J. Mater. Chem. A 新锐科学家称号、韩国优秀外国研究员奖、斯坦福大学全球 top 2% 科学家、微结构年度杰出青年科学家等。作为负责人主持国家自然科学基金、香港研究资助局基金、香港创新与科技基金、香港环保署基金、深圳市自然科学基金等 20 余项，任 EcoMat、J. Energy Chem. 等电化学储能领域期刊任（青年）编委。

Metal anode batteries, particular multivalent metal systems including Mg, Ca, and Zn, are promising candidates for next-generation energy storage due to their high natural abundance and superior theoretical energy densities. However, the electrode/electrolyte interphase remains the paramount factor limiting the reversibility and reaction kinetics of multivalent metal deposition/dissolution. Unlike the ionic-conductive interphase demonstrated in monovalent metal (Li and Na) anode systems, conventional electrolytes often form ion-insulating layers on the surface of multivalent anodes, putting a significant barrier for reversible stripping and plating. This talk provides our recent advancements in understanding how the passivation layers impact multivalent ion transport and reduction, and how the interphases evolve during electrochemical cycling. I will also introduce our innovative electrolyte design strategies to stabilize the interfacial chemistry and our insights about correlation between the electrolyte formulations and interfacial dynamics. By presenting a correlation among electrolyte chemistry, interphase properties, and electrochemical performance for multivalent metal anodes, I expect to inspire the research interests among the community to explore this challenging but rewarding field of multivalent metal battery chemistry.