Co 3 O 4 and CDots nanocrystals on g-C 3 N 4 as a synergetic catalyst for oxygen reduction reaction

Green Processing and Synthesis

article

Huihua Wang¹  Yanmei Yang²  Tianpeng Qu¹  Zhenhui Kang²  Deyong Wang¹ 

[1] School of Iron and Steel, Soochow University;Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University

关键词: CDots;    durability;    electrocatalyst;    g-C3N4;    onset potential;    ORR;   

DOI  :  10.1515/gps-2015-0049

来源: De Gruyter

【 摘 要 】

Due to the demand of an efficient, inexpensive and scalable synthesis of an oxygen reduction reaction (ORR) catalyst for practical application in fuel cells, we demonstrate a facile strategy to fabricate the flexible Co 3 O 4 -C/C 3 N 4 catalyst. The results show that Co 3 O 4 -C/C 3 N 4 exhibits a remarkably enhanced ORR electrocatalytic activity due to the introduction of Co and carbon nanodots (CDots) into the graphitic carbon nitride (g-C 3 N 4 ) sheet. The electron-transferred number of Co 3 O 4 -C/C 3 N 4 toward ORR is calculated to be about 3.69, suggesting a desirable four-electron pathway. Furthermore, Co 3 O 4 -C/C 3 N 4 shows better durability and tolerance to methanol crossover effects than the commercial platinum (Pt)/C catalyst, indicating a promising potential as an ORR electrocatalyst in practical applications.

【 授权许可】

CC BY