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学术报告:Defect Electrocatalysis
2019-09-05  
报告人:  Professor Xiangdong Yao
             State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, China
             Griffith University, Nathan Campus, Queensland 4111, Australia
报告时间:2019 年9 月6 日(星期五)上午10:00
报告地点:中心实验室A102 报告厅
[Abstract]
      Electrocatalysis is the key for energy conversion and storage devices such as fuel cells, metal-air batteries and water splitting. The development of highly efficient and non-precious metal catalyst is extremely important. Recently, we presented a new concept of defect electrocatalysis, in which the topological defects on carbons or in oxides/compounds are the active sites for electrochemical reactions. A series of non-metal catalysts have been developed based on this new theory. Besides, the defects are such characterized points with higher energy, thus provides ideal sites to interact with non-/metal species in various sizes. The strong interactions may provide both high reactivity and stability. When the size of metal species reduces to atomic level, the general configurations are metal atoms trapped into defects according to the minimum energy theory. The coordination of the defect and atomic species plays the central role for electrocatalysis as the local electronic structures defined by this coordination determines the interaction of reactant and active sites.


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