CoP/N-Doped Carbon Hollow Spheres Anchored on Electrospinning
Core–Shell N‑Doped Carbon Nanofibers as Efficient Electrocatalysts
for Water Splitting
Posted on 2019-10-09 - 16:43
In
this work, a series of hybrids of CoP/N-doped carbon hollow
spheres anchored on core–shell N-doped carbon nanofibers were
facilely fabricated by the electrospinning technique followed by pyrolysis
and phosphorization. The as-prepared hybrids exhibited greatly enhanced
bifunctional electrocatalytic activities for the hydrogen evolution
reaction (HER) and oxygen evolution reaction (OER) compared to either
moiety of CoP/N-doped carbon hollow spheres and core–shell
N-doped carbon nanofibers. Especially, the optimum CoP/NCF-200 hybrid
exhibited high performances and stabilities for OER in alkaline conditions
and for HER in both acidic and alkaline electrolytes. The catalyst
also exhibited excellent performance for overall water splitting as
both anodic and cathodic catalysts in alkaline media. The density
functional theory calculations suggest that the synergy between CoP
and N dopants leads to higher catalytic activities for HER and OER
and the C atoms between N atoms in the carbon layer are the catalytically
active sites for the HER.
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Tong, Jinhui; Li, Yuliang; Bo, Lili; Li, Wenyan; Li, Tao; Zhang, Qi; et al. (2019). CoP/N-Doped Carbon Hollow Spheres Anchored on Electrospinning
Core–Shell N‑Doped Carbon Nanofibers as Efficient Electrocatalysts
for Water Splitting. ACS Publications. Collection. https://doi.org/10.1021/acssuschemeng.9b04643
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AUTHORS (9)
JT
Jinhui Tong
YL
Yuliang Li
LB
Lili Bo
WL
Wenyan Li
TL
Tao Li
QZ
Qi Zhang
DK
Deyuan Kong
HW
Huan Wang
CL
Chunyan Li
KEYWORDS
N dopantsN-dopedC atomscarbon layerhydrogen evolution reactionelectrospinning techniquecathodic catalystsnanofibertheory calculationsbifunctional electrocatalytic activitiesas-prepared hybridscoreHERN atomsoxygen evolution reactionEfficient ElectrocatalystsCoPperformanceOERwater splittingWater Splitting