Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China.
Queen Mary University of London, School of Engineering and Materials Science, Mile End Road, E1 4NS, London, UK.
Adv Mater. 2016 Aug;28(32):6845-51. doi: 10.1002/adma.201601406. Epub 2016 May 11.
A bifunctional graphene catalyst with abundant topological defects is achieved via the carbonization of natural gelatinized sticky rice to probe the underlying oxygen electrocatalytic mechanism. A nitrogen-free configuration with adjacent pentagon and heptagon carbon rings is revealed to exhibit the lowest overpotential for both oxygen reduction and evolution catalysis. The versatile synthetic strategy and novel insights on the activity origin facilitate the development of advanced metal-free carbocatalysts for a wide range of electrocatalytic applications.
通过碳化天然胶凝糯米制备了一种富含拓扑缺陷的双功能石墨烯催化剂，以探究其氧电催化机制。结果表明，具有相邻五元和七元碳环的无氮构型对氧还原和氧析出催化具有最低的过电位。这种通用的合成策略和对活性起源的新见解为开发用于广泛电催化应用的先进无金属碳催化剂提供了便利。
