Oxygen evolution reaction (OER) is a limiting process in energy conversion and storage due to its sluggish kinetics, especially in water electrolysis. The critical challenge in this area is to explore alternative precious-metal-free catalysts to promote the OER process. Transition metal-based compounds have attracted much attention in electrochemical water splitting because of their unique chemical and physical properties, as well as low cost. In this review, we summarize the recent research status and progress of spinel, perovskite and layered double hydroxides as electrocatalysts for OER, which have been extensively studied in recent years. The researcher strategies developed to promote electrocatalytic activities and stability are described, along with the electrochemical properties of theses developed catalysts. Based on related references, we observed that there are generally two strategies to improve OER catalyst activities: (1) introduce more active sites and expose them to the catalyst surface and (2) optimize the conductivity of OER catalysts. These requirements can be met to some extent by the controlling size, morphology, intrinsic and lattice defects, oxygen vacancies, phase and composition of OER catalysts, and by the incorporation of conducting materials in composites. Finally, the future development of OER electrocatalysts is briefly discussed.
SONG Naijian. Recent advances in transition metal-based catalysts for oxygen evolution reaction[J]. Energy Storage Science and Technology, 2021, 10(6): 1906-1917
Fig. 1
(a) Spinel structure of AB2O4[14]; (b)~(c) Tafel slope versus overpotential at 10 mA/cm2 for reported OER catalysts and FESEM images of FeCo2O4[28]; (d) Schematic illustration of the formation process of trimetallic NiCo2-xFexO4 nanoboxes and overpotentials at the specific current densities for Co3O4, Co3-xFexO4, NiCo2O4,NiCo2-xFexO4 nanoboxes and RuO2[32]
Fig. 2
(a) Crystal structure of a perovskite (ABO3)[34]; (b) The correlation between applied potential[35]; (c) Process of the highly oxidative active O engineering by F substitution in BSCF[38]
Fig. 3
(a) Schematic Model of LDHs[42]; (b)~(c) Synthesis process of Co/Fe3+ or Ni/Fe3+ and LSV curves for the first cycle, that tested after 70 h of OER[49]; (d) Synthesis process of NiFe-LDH-PANI, TEM images of NiFe-LDH-PANI and the overpotentials for NiFe-LDH-PANI, pure NiFe-LDHs, and RuO2 at the specific current densities[52]
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(a) Spinel structure of AB2O4[14]; (b)~(c) Tafel slope versus overpotential at 10 mA/cm2 for reported OER catalysts and FESEM images of FeCo2O4[28]; (d) Schematic illustration of the formation process of trimetallic NiCo2-xFexO4 nanoboxes and overpotentials at the specific current densities for Co3O4, Co3-xFexO4, NiCo2O4,NiCo2-xFexO4 nanoboxes and RuO2[32]Fig. 11.1.1 单金属OER催化剂
... [14]; (b)~(c) Tafel slope versus overpotential at 10 mA/cm2 for reported OER catalysts and FESEM images of FeCo2O4[28]; (d) Schematic illustration of the formation process of trimetallic NiCo2-xFexO4 nanoboxes and overpotentials at the specific current densities for Co3O4, Co3-xFexO4, NiCo2O4,NiCo2-xFexO4 nanoboxes and RuO2[32]Fig. 11.1.1 单金属OER催化剂
(a) Spinel structure of AB2O4[14]; (b)~(c) Tafel slope versus overpotential at 10 mA/cm2 for reported OER catalysts and FESEM images of FeCo2O4[28]; (d) Schematic illustration of the formation process of trimetallic NiCo2-xFexO4 nanoboxes and overpotentials at the specific current densities for Co3O4, Co3-xFexO4, NiCo2O4,NiCo2-xFexO4 nanoboxes and RuO2[32]Fig. 11.1.1 单金属OER催化剂
... [28]; (d) Schematic illustration of the formation process of trimetallic NiCo2-xFexO4 nanoboxes and overpotentials at the specific current densities for Co3O4, Co3-xFexO4, NiCo2O4,NiCo2-xFexO4 nanoboxes and RuO2[32]Fig. 11.1.1 单金属OER催化剂
(a) Spinel structure of AB2O4[14]; (b)~(c) Tafel slope versus overpotential at 10 mA/cm2 for reported OER catalysts and FESEM images of FeCo2O4[28]; (d) Schematic illustration of the formation process of trimetallic NiCo2-xFexO4 nanoboxes and overpotentials at the specific current densities for Co3O4, Co3-xFexO4, NiCo2O4,NiCo2-xFexO4 nanoboxes and RuO2[32]Fig. 11.1.1 单金属OER催化剂
... [34];(b) 镧基高熵钙钛矿氧化物(HEPO)电流密度与应用电位之间的关系曲线[35];(c) BSCF中F取代高氧化性O的过程[38](a) Crystal structure of a perovskite (ABO3)[34]; (b) The correlation between applied potential[35]; (c) Process of the highly oxidative active O engineering by F substitution in BSCF[38]Fig. 2
... [34]; (b) The correlation between applied potential[35]; (c) Process of the highly oxidative active O engineering by F substitution in BSCF[38]Fig. 2
(a) Crystal structure of a perovskite (ABO3)[34]; (b) The correlation between applied potential[35]; (c) Process of the highly oxidative active O engineering by F substitution in BSCF[38]Fig. 2
(a) Crystal structure of a perovskite (ABO3)[34]; (b) The correlation between applied potential[35]; (c) Process of the highly oxidative active O engineering by F substitution in BSCF[38]Fig. 2
(a) Schematic Model of LDHs[42]; (b)~(c) Synthesis process of Co/Fe3+ or Ni/Fe3+ and LSV curves for the first cycle, that tested after 70 h of OER[49]; (d) Synthesis process of NiFe-LDH-PANI, TEM images of NiFe-LDH-PANI and the overpotentials for NiFe-LDH-PANI, pure NiFe-LDHs, and RuO2 at the specific current densities[52]Fig. 3
... [42]; (b)~(c) Synthesis process of Co/Fe3+ or Ni/Fe3+ and LSV curves for the first cycle, that tested after 70 h of OER[49]; (d) Synthesis process of NiFe-LDH-PANI, TEM images of NiFe-LDH-PANI and the overpotentials for NiFe-LDH-PANI, pure NiFe-LDHs, and RuO2 at the specific current densities[52]Fig. 3
(a) Schematic Model of LDHs[42]; (b)~(c) Synthesis process of Co/Fe3+ or Ni/Fe3+ and LSV curves for the first cycle, that tested after 70 h of OER[49]; (d) Synthesis process of NiFe-LDH-PANI, TEM images of NiFe-LDH-PANI and the overpotentials for NiFe-LDH-PANI, pure NiFe-LDHs, and RuO2 at the specific current densities[52]Fig. 3
... [49]; (d) Synthesis process of NiFe-LDH-PANI, TEM images of NiFe-LDH-PANI and the overpotentials for NiFe-LDH-PANI, pure NiFe-LDHs, and RuO2 at the specific current densities[52]Fig. 3
(a) Schematic Model of LDHs[42]; (b)~(c) Synthesis process of Co/Fe3+ or Ni/Fe3+ and LSV curves for the first cycle, that tested after 70 h of OER[49]; (d) Synthesis process of NiFe-LDH-PANI, TEM images of NiFe-LDH-PANI and the overpotentials for NiFe-LDH-PANI, pure NiFe-LDHs, and RuO2 at the specific current densities[52]Fig. 3