Co/Co9S8/nitrogen-doping hollow carbon spheres nanocomposite as an efficient and durable electrocatalyst for oxygen reduction reaction

被引:6
作者
Jia, Xiaodong [1 ]
Cui, Jie [1 ]
Fang, Hua [1 ]
Wang, Lixia [1 ]
Li, Xiaofeng [1 ]
Song, Yanhua [1 ]
Zhang, Linsen [1 ]
Guo, Huishi [1 ]
机构
[1] Zhengzhou Univ Light Ind, Henan Prov Key Lab Surface & Interface Sci, 136 Sci Ave, Zhengzhou 450001, Peoples R China
基金
美国国家科学基金会;
关键词
Co/Co9S8/nitrogen-doped hollow carbon spheres nanocomposite; Electrocatalysis; Synergistic effect; Oxygen reduction reaction; BIFUNCTIONAL ELECTROCATALYSTS; ELECTROCHEMICAL PERFORMANCE; FACILE FABRICATION; POROUS CARBON; NITROGEN; CATALYSTS; SHEETS; OXIDE; FILM; ORR;
D O I
10.1016/j.inoche.2020.108284
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The design of efficient, low-cost, and durable catalysts for oxygen reduction reaction (ORR) is pivotal to fuel cells. Herein, we developed a facile strategy to fabricate a Co/Co9S8/nitrogen-doped hollow carbon spheres (NHCS) nanocomposite via calcining 3-Aminobenzenesulfonic anions within the interlamination of CoAl-layered double hydroxides (CoAl-LDH) at 900 degrees C in N-2 atmosphere. The Co/Co9S8/NHCS nanocomposite with numerous carbon nanosheets possesses large specific surface area and pore volume, and Co/Co9S8 nanoparticles were embedded within the carbon nanosheets. The Co/Co9S8/NHCS nanocomposite exhibits superexcellent ORR activities with an E (onset) of 0.95 V, an E (1/2) of 0.87 V and a J(1600) rpm of 5.82 mA cm(2) at 0.70 V vs. RHE. Moreover, the Co/Co9S8/NHCS nanocomposite displays prominent methanol tolerance and excellent stability in 0.1 M KOH. This work provides an efficient approach for developing non-precious metal ORR catalysts.
引用
收藏
页数:8
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