电催化剂
石墨烯
材料科学
电池(电)
电化学
催化作用
纳米技术
化学工程
无机化学
电极
化学
有机化学
量子力学
物理
工程类
物理化学
功率(物理)
作者
Yong Qin,Hong Wu,Lei A. Zhang,Xiao Zhou,Yunfei Bu,Wei Zhang,Fuqiang Chu,Yutong Li,Yong Kong,Qiaobao Zhang,Dong Ding,Yongxin Tao,Yongxin Li,Meilin Liu,Xiao Cheng Zeng
标识
DOI:10.1021/acscatal.8b04117
摘要
The development of a highly active and exceedingly durable electrocatalyst at low cost for the oxygen reduction reaction (ORR) is extremely desirable but remains to be a grand challenge. Over the past decade, the transitional-metal (e.g., Fe, Co, Ni) and N codoped graphene materials have attracted most attention as the state-of-the-art nonprecious-metal-based effective electrocatalyst for ORR but still entail unsatisfactory issues such as moderate activity and life. Herein, the main-group-metal Al and N codoped graphene (ANG) is successfully fabricated via thermal annealing treatment of N-doped graphene with aluminum tri-(8-hydroxyquinoline). As a highly effective electrocatalyst for ORR, the as-prepared ANG exhibits not only high electrocatalytic activity that even outperforms the commercial Pt/C but also good durability in both three-electrode cell and Zn-air battery. Theoretical calculations show that the inhomogeneous charge density distribution and the interaction between Al and N are mainly responsible for the marked enhancement of ORR activity. The designed ANG electrocatalysts will provide a perspective application in energy storage and promote further exploration of main-group-element-based inexpensive, active, and durable electrocatalysts.
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