TY - JOUR
T1 - Hollow Mo-doped CoP nanoarrays for efficient overall water splitting
AU - Wu, Haijun
AU - Xiao, Wen
AU - Guan, Cao
AU - Liu, Ximeng
AU - Zang, Wenjie
AU - Zhang, Hong
AU - Ding, Jun
AU - Feng, Yuan Ping
AU - Pennycook, Stephen J.
AU - Wang, John
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/6
Y1 - 2018/6
N2 - Earth-abundant, efficient and durable electrocatalysts for water splitting are vitally important for a sustainable energy system. Here we report the rational design of hollow Mo-doped CoP (Mo-CoP) nanoarrays, which simultaneously combine electronic structure modification through doping with a high density of reaction sites through nanostructuring. With this strategy the Mo-CoP arrays give significantly improved hydrogen evolution reaction (HER) performance, and also, when in situ transformed into Mo-doped CoOOH (Mo-CoOOH) arrays, excellent activity towards the oxygen evolution reaction (OER) is obtained. The origin of the improvement is determined by atomic-resolution imaging combined with density functional theory (DFT). An electrolyzer using Mo-CoP and Mo-CoOOH can be powered by a single AA battery (~1.5 V), and maintains a stable water-splitting current for 20 h, superior to most reported electrocatalysts in alkaline media, offering great promise for practical applications.
AB - Earth-abundant, efficient and durable electrocatalysts for water splitting are vitally important for a sustainable energy system. Here we report the rational design of hollow Mo-doped CoP (Mo-CoP) nanoarrays, which simultaneously combine electronic structure modification through doping with a high density of reaction sites through nanostructuring. With this strategy the Mo-CoP arrays give significantly improved hydrogen evolution reaction (HER) performance, and also, when in situ transformed into Mo-doped CoOOH (Mo-CoOOH) arrays, excellent activity towards the oxygen evolution reaction (OER) is obtained. The origin of the improvement is determined by atomic-resolution imaging combined with density functional theory (DFT). An electrolyzer using Mo-CoP and Mo-CoOOH can be powered by a single AA battery (~1.5 V), and maintains a stable water-splitting current for 20 h, superior to most reported electrocatalysts in alkaline media, offering great promise for practical applications.
KW - 2D metal-organic framework
KW - Binder-free
KW - Electrochemical electrocatalyst
KW - Hollow nanoarrays
KW - Metal phosphide
UR - http://www.scopus.com/inward/record.url?scp=85044159635&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2018.03.034
DO - 10.1016/j.nanoen.2018.03.034
M3 - 文章
AN - SCOPUS:85044159635
SN - 2211-2855
VL - 48
SP - 73
EP - 80
JO - Nano Energy
JF - Nano Energy
ER -
