TY - JOUR
T1 - Iron-Doped Nickel Phosphide Nanosheet Arrays
T2 - An Efficient Bifunctional Electrocatalyst for Water Splitting
AU - Wang, Pengyan
AU - Pu, Zonghua
AU - Li, Yanhui
AU - Wu, Lin
AU - Tu, Zhengkai
AU - Jiang, Min
AU - Kou, Zongkui
AU - Amiinu, Ibrahim Saana
AU - Mu, Shichun
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/8/9
Y1 - 2017/8/9
N2 - Exploring efficient and earth-abundant electrocatalysts for water splitting is crucial for various renewable energy technologies. In this work, iron (Fe)-doped nickel phosphide (Ni2P) nanosheet arrays supported on nickel foam (Ni1.85Fe0.15P NSAs/NF) are fabricated through a facile hydrothermal method, followed by phosphorization. The electrochemical analysis demonstrates that the Ni1.85Fe0.15P NSAs/NF electrode possesses high electrocatalytic activity for water splitting. In 1.0 M KOH, the Ni1.85Fe0.15P NSAs/NF electrode only needs overpotentials of 106 mV at 10 mA cm-2 and 270 mV at 20 mA cm-2 to drive the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Furthermore, the assembled two-electrode (Ni1.85Fe0.15P NSAs/NF∝Ni1.85Fe0.15P NSAs/NF) alkaline water electrolyzer can produce a current density of 10 mA cm-2 at 1.61 V. Remarkably, it can maintain stable electrolysis over 20 h. Thus, this work undoubtedly offers a promising electrocatalyst for water splitting.
AB - Exploring efficient and earth-abundant electrocatalysts for water splitting is crucial for various renewable energy technologies. In this work, iron (Fe)-doped nickel phosphide (Ni2P) nanosheet arrays supported on nickel foam (Ni1.85Fe0.15P NSAs/NF) are fabricated through a facile hydrothermal method, followed by phosphorization. The electrochemical analysis demonstrates that the Ni1.85Fe0.15P NSAs/NF electrode possesses high electrocatalytic activity for water splitting. In 1.0 M KOH, the Ni1.85Fe0.15P NSAs/NF electrode only needs overpotentials of 106 mV at 10 mA cm-2 and 270 mV at 20 mA cm-2 to drive the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Furthermore, the assembled two-electrode (Ni1.85Fe0.15P NSAs/NF∝Ni1.85Fe0.15P NSAs/NF) alkaline water electrolyzer can produce a current density of 10 mA cm-2 at 1.61 V. Remarkably, it can maintain stable electrolysis over 20 h. Thus, this work undoubtedly offers a promising electrocatalyst for water splitting.
KW - electrocatalysts
KW - hydrogen evolution reaction
KW - NiFeP nanosheet arrays
KW - oxygen evolution reaction
KW - water splitting
UR - https://www.scopus.com/pages/publications/85027260242
U2 - 10.1021/acsami.7b06305
DO - 10.1021/acsami.7b06305
M3 - Article
C2 - 28714664
AN - SCOPUS:85027260242
SN - 1944-8244
VL - 9
SP - 26001
EP - 26007
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 31
ER -
