TY - JOUR
T1 - Enhanced Water Oxidation Activity by Introducing Gallium into Cobalt-Iron Oxide System
AU - Zhang, Qiaoqiao
AU - Fan, Yong
AU - Wang, Wei
AU - Liu, Ning
AU - Guan, Jingqi
N1 - Publisher Copyright:
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/1/2
Y1 - 2020/1/2
N2 - Development of high-efficiency and robust multi-element transition metal oxides for oxygen evolution reaction (OER) is crucial to improve the energy efficiency of electrocatalytic water splitting. Here, we report a simple and efficient sol-gel strategy to synthesize an amorphous ternary Fe−Co−Ga oxide composite with high OER activity, low Tafel slope, and good durability. The overpotential at 10 mA ⋅ cm−2 of the FeCoGaOx on glassy carbon, platinum, carbon paper, and nickel foam electrode is 245, 275, 237, and 215 mV, respectively, in an alkaline electrolyte. The addition of gallium into the FeCoOx system significantly promotes the charge transfer kinetics, thus improving the OER activity. This work affords a controllable method to vastly prepare cost-effective and high-efficiency multi-metal water oxidation electrocatalysts.
AB - Development of high-efficiency and robust multi-element transition metal oxides for oxygen evolution reaction (OER) is crucial to improve the energy efficiency of electrocatalytic water splitting. Here, we report a simple and efficient sol-gel strategy to synthesize an amorphous ternary Fe−Co−Ga oxide composite with high OER activity, low Tafel slope, and good durability. The overpotential at 10 mA ⋅ cm−2 of the FeCoGaOx on glassy carbon, platinum, carbon paper, and nickel foam electrode is 245, 275, 237, and 215 mV, respectively, in an alkaline electrolyte. The addition of gallium into the FeCoOx system significantly promotes the charge transfer kinetics, thus improving the OER activity. This work affords a controllable method to vastly prepare cost-effective and high-efficiency multi-metal water oxidation electrocatalysts.
KW - cobalt oxide
KW - gallium oxide
KW - iron oxide
KW - oxygen evolution reaction
KW - water oxidation
UR - http://www.scopus.com/inward/record.url?scp=85075741323&partnerID=8YFLogxK
U2 - 10.1002/celc.201901598
DO - 10.1002/celc.201901598
M3 - Article
AN - SCOPUS:85075741323
SN - 2196-0216
VL - 7
SP - 118
EP - 123
JO - ChemElectroChem
JF - ChemElectroChem
IS - 1
ER -