Journal
NANOSCALE
Volume 10, Issue 33, Pages 15706-15713Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr04068k
Keywords
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Categories
Funding
- National Key R&D Program of China [2017YFB1104300, 2016YFA0200200]
- NSFC [21604003, 21325415, 51673026, 51433005, 21674056]
- NSFC-MAECI [51861135202]
- Beijing Natural Science Foundation [2152028, 2164070]
- Beijing Municipal Science and Technology Commission [Z161100002116022, Z161100002116029]
- 111 Project [807012]
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The rational design of an efficient and robust oxygen reduction reaction (ORR) electrocatalyst is vital for energy conversion and storage systems, especially for metal-air batteries. Herein, we report a highly nanocrumpled and nitrogen, phosphorus-codoped nanocarbon (NC-NPC) synthesized by direct pyrolysis of melamine and triphenylphosphine. With the rich nano-crumpled structure and codoping of heteroatoms, this low-cost catalyst exhibits an excellent ORR performance, and possesses a half-wave potential of 0.84 V vs. RHE, a small Tafel slope of 70.2 mV dec(-1), and good electrocatalytic stability. More importantly, it can also be applied in zinc-air batteries as an efficient electrode which delivers an open-circle voltage of 1.38 V, a specific capacity of 782 mA h g(Zn)(-1), and a long cycling life of 210 h, superior to the commercial Pt/C catalyst.
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