【学术讲座】Andraž Mavrič:利用原位X射线吸收光谱揭示镍-钴的电化学氧化还原活性

发布日期:2026-07-07    浏览次数:

主讲人简介

Andraž Mavrič2014年获卢布尔雅那大学(University of Ljubljana)化学硕士学位,2018年取得新戈里察大学(University of Nova GoricaUNG)物理学博士学位。博士毕业后,他前往电子科技大学开展博士后研究,主要从事电催化剂原位表征相关工作。2020年,他正式入职UNG材料研究实验室,致力于揭示金属氧化物、氢氧化物的结构参数对材料氧化还原活性及稳定性的调控机制,为高性能能量转换与储能新材料的研发提供重要依据。科研之外,他同时担任该校“材料科学”硕士项目负责人,并在2025斯洛文尼亚化学会青年化学与化工工作者奖(Slovenian Chemical Society Award for Young Chemists and Chemical Engineers)。


主讲内容简介

Ni and Co are key materials for the global energy transition, offering abundance, redox versatility, and high activity for electrochemical energy storage. Realizing this potential requires structural design that maximizes accessibility of redox-active metal sites. Layered double hydroxides (LDHs) provide an ideal platform: their tuneable composition allows co-incorporation of multiple metal cations, while interlayer spacing and phase structure govern electrolyte access to active sites. For Ni and Co hydroxides, carbonate incorporation during hydrothermal synthesis is the main factor limiting pseudocapacitive performance. Low-temperature HMT-derived samples instead form turbostratic phases with expanded interlayer spacing and minimal carbonate content, resulting in markedly higher capacitance. In situ XAS at the Ni and Co K-edges confirms that only these carbonate-free, open structures enable extensive bulk oxidation during charging, establishing carbonate content as a key structural descriptor for optimizing pseudocapacitive electrodes.


时间:2026年7月14日 (星期二)10:30-11:30

地点:机械楼502

主办单位:科技处(科技成果转化中心)

协办单位:高等研究院


一审:周季欣

二审:马晓黎

三审:蔡业新