TY - JOUR
T1 - Efficient and stable noble-metal-free catalyst for acidic water oxidation
AU - Pan, Sanjiang
AU - Li, Hao
AU - Liu, Dan
AU - Huang, Rui
AU - Pan, Xuelei
AU - Ren, Dan
AU - Li, Jun
AU - Shakouri, Mohsen
AU - Zhang, Qixing
AU - Wang, Manjing
AU - Wei, Changchun
AU - Mai, Liqiang
AU - Zhang, Bo
AU - Zhao, Ying
AU - Wang, Zhenbin
AU - Graetzel, Michael
AU - Zhang, Xiaodan
PY - 2022
Y1 - 2022
N2 - Developing non-noble catalysts with superior activity and durability for oxygen evolution reaction (OER) in acidic media is paramount for hydrogen production from water. Still, challenges remain due to the inadequate activity and stability of the OER catalyst. Here, we report a cost-effective and stable manganese oxybromide (Mn7.5O10Br3) catalyst exhibiting an excellent OER activity in acidic electrolytes, with an overpotential of as low as 295 ± 5 mV at a current density of 10 mA cm−2. Mn7.5O10Br3 maintains good stability under operating conditions for at least 500 h. In situ Raman spectroscopy, X ray absorption near edge spectroscopy, and density functional theory calculations confirm that a self-oxidized surface with enhanced electronic transmission capacity forms on Mn7.5O10Br3 and is responsible for both the high catalytic activity and long-term stability during catalysis. The development of Mn7.5O10Br3 as an OER catalyst provides crucial insights into the design of non-noble metal electrocatalysts for water oxidation. © 2022, The Author(s).
AB - Developing non-noble catalysts with superior activity and durability for oxygen evolution reaction (OER) in acidic media is paramount for hydrogen production from water. Still, challenges remain due to the inadequate activity and stability of the OER catalyst. Here, we report a cost-effective and stable manganese oxybromide (Mn7.5O10Br3) catalyst exhibiting an excellent OER activity in acidic electrolytes, with an overpotential of as low as 295 ± 5 mV at a current density of 10 mA cm−2. Mn7.5O10Br3 maintains good stability under operating conditions for at least 500 h. In situ Raman spectroscopy, X ray absorption near edge spectroscopy, and density functional theory calculations confirm that a self-oxidized surface with enhanced electronic transmission capacity forms on Mn7.5O10Br3 and is responsible for both the high catalytic activity and long-term stability during catalysis. The development of Mn7.5O10Br3 as an OER catalyst provides crucial insights into the design of non-noble metal electrocatalysts for water oxidation. © 2022, The Author(s).
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U2 - 10.1038/s41467-022-30064-6
DO - 10.1038/s41467-022-30064-6
M3 - RGC 21 - Publication in refereed journal
C2 - 35484271
SN - 2041-1723
VL - 13
JO - Nature Communications
JF - Nature Communications
M1 - 2294
ER -