期刊
COMPOSITES COMMUNICATIONS
卷 1, 期 -, 页码 15-19出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.coco.2016.07.003
关键词
Nanocubic-Co3O4; Nitrogen-doped carbon nanofiber; Binder-free; Oxygen reduction reactions
资金
- National Natural Science Foundation of China [51373037, 51433001]
High-performance electrocatalysts with excellent catalytic activity and long durability competitive to Pt are urgently necessary for fuel cell development. Here, a novel self-standing membrane of nitrogen doped carbon nanofibers (NCNF) has been developed, acting as a three-dimensionally networked and conductive template for immobilization of electrochemically active Co(3)o(4) particles. Thus, nanocubic-CO3O4 coated NCNF (NCNF@Co3O4) composite fiber membrane with hierarchical structures is obtained, which subtly combines the synergistic effects between the electroactive nanocubic-Co3O4, efficient surface nitrogen doping and highly conductive NCNF network. Therefore, the NCNF@Co3O4 composite exhibits excellent catalytic activity toward oxygen reduction reactions with positive Epeak potential, high current density and superior durability over the commercial Pt/C catalyst, being a promising noble metal-free catalyst for practical fuel cell applications. (C) 2016 Elsevier Ltd. All rights reserved.
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