Chu, S. & Majumdar, A. Opportunities and challenges for a sustainable energy future. Nature 488, 294–303 (2012).
Zhang, B. et al. Homogeneously dispersed multimetal oxygen-evolving catalysts. Science 352, 333–337 (2016).
Seitz, L. C. et al. A highly active and stable IrOx/SrIrO3 catalyst for the oxygen evolution reaction. Science 353, 1011–1014 (2016).
Li, S. et al. Oxygen-evolving catalytic atoms on metal carbides. Nat. Mater. 20, 1240 (2021).
Jiang, K. et al. Dynamic active-site generation of atomic iridium stabilized on nanoporous metal phosphides for water oxidation. Nat. Commun. 11, 2701 (2020).
Tobias, R., Nhan, N. H., Detre, T., Robert, S. & Peter, S. Electrocatalytic oxygen evolution reaction in acidic environments—reaction mechanisms and catalysts. Adv. Energy Mater. 7, 1601275 (2017).
Cherevko, S. et al. Oxygen and hydrogen evolution reactions on Ru, RuO2, Ir, and IrO2 thin film electrodes in acidic and alkaline electrolytes: a comparative study on activity and stability. Catal. Today 262, 170–180 (2016).
Yan, Z. et al. Anion insertion enhanced electrodeposition of robust metal hydroxide/oxide electrodes for oxygen evolution. Nat. Commun. 9, 2373 (2018).
Huang, W. et al. Ligand modulation of active sites to promote electrocatalytic oxygen evolution. Adv. Mater. 34, 2200270 (2022).
Yang, L. et al. Efficient oxygen evolution electrocatalysis in acid by a perovskite with face-sharing IrO6 octahedral dimers. Nat. Commun. 9, 5236 (2018).
Huang, C. J. et al. A review of modulation strategies for improving catalytic performance of transition metal phosphides for oxygen evolution reaction. Appl. Catal. B Environ. 325, 122313 (2023).
Batool, M., Hameed, A. & Nadeem, M. A. Recent developments on iron and nickel-based transition metal nitrides for overall water splitting: a critical review. Coord. Chem. Rev. 480, 215029 (2023).
Mohili, R., Hemanth, N. R., Jin, H., Lee, K. & Chaudhari, N. Emerging high entropy metal sulphides and phosphides for electrochemical water splitting. J. Mater. Chem. A 11, 10463–10472 (2023).
Zhu, Y. et al. Iridium single atoms incorporated in Co3O4 efficiently catalyze the oxygen evolution in acidic conditions. Nat. Commun. 13, 7754 (2022).
Dincă, M., Surendranath, Y. & Nocera, D. G. Nickel-borate oxygen-evolving catalyst that functions under benign conditions. Proc. Natl Acad. Sci. USA 107, 10337 (2010).
Bauer, J., Buss, D. H., Harms, H.-J. & Glemser, O. The electrochemical behavior of positive cobalt/aluminum and cobalt/iron hydroxide electrodes. J. Electrochem. Soc. 137, 173–178 (1990).
Benson, P., Briggs, G. W. D. & Wynne-Jones, W. F. K. The cobalt hydroxide electrode—I. Structure and phase transitions of the hydroxides. Electrochim. Acta 9, 275–276 (1964).
Benson, P., Briggs, G. W. D. & Wynne-Jones, W. F. K. The cobalt hydroxide electrode—II. Electrochemical behavior. Electrochim. Acta 9, 281–288 (1964).
Babar, P. et al. Cobalt iron hydroxide as a precious metal-free bifunctional electrocatalyst for efficient overall water splitting. Small 14, 1702568 (2018).
Wu, J. et al. Constructing electrocatalysts with composition gradient distribution by solubility product theory: amorphous/crystalline CoNiFe-LDH hollow nanocages. Adv. Funct. Mater. 33, 2300808 (2023).
Enkhtuvshin, E. et al. Surface reconstruction of Ni–Fe layered double hydroxide inducing chloride ion blocking materials for outstanding overall seawater splitting. Adv. Funct. Mater. 33, 2214069 (2023).
Li, Z. et al. High-density cationic defects coupling with local alkaline-enriched environment for efficient and stable water oxidation. Angew. Chem. Int. Ed. 62, e2022178 (2023).
Arshad, F. et al. Microwave-assisted growth of spherical core-shell NiFe LDH@CuxO nanostructures for electrocatalytic water oxidation reaction. Int. J. Hydrog. Energy 48, 4719–4727 (2023).
Li, H. et al. Efficient electrocatalysis for oxygen evolution: W-doped NiFe nanosheets with oxygen vacancies constructed by facile electrodeposition and corrosion. Chem. Eng. J. 452, 139104 (2023).
Cui, H. et al. Synergistic electronic interaction between ruthenium and nickel-iron hydroxide for enhanced oxygen evolution reaction. Rare Met. 41, 2606–2615 (2022).
Kim, S. J. et al. Zn-doped nickel iron (oxy)hydroxide nanocubes passivated by polyanions with high catalytic activity and corrosion resistance for seawater oxidation. J. Energy Chem. 81, 82–92 (2023).
Li, P. et al. Boosting oxygen evolution of single-atomic ruthenium through electronic coupling with cobalt-iron layered double hydroxides. Nat. Commun. 10, 1711 (2019).
Zhai, P. et al. Engineering single-atomic ruthenium catalytic sites on defective nickel-iron layered double hydroxide for overall water splitting. Nat. Commun. 12, 4587 (2021).
Mu, X. et al. Breaking the symmetry of single-atom catalysts enables an extremely low energy barrier and high stability for large-current-density water splitting. Energy Environ. Sci. 15, 4048 (2022).
Zhang, T. et al. Pinpointing the axial ligand effect on platinum single-atom-catalyst towards efficient alkaline hydrogen evolution reaction. Nat. Commun. 13, 6875 (2022).
Li, X. et al. Convergent paired electrosynthesis of dimethyl carbonate from carbon dioxide enabled by designing the superstructure of axial oxygen coordinated nickel single-atom catalysts. Energy Environ. Sci. 16, 502–512 (2023).
Liu, Y. et al. Axial phosphate coordination in Co single atoms boosts electrochemical oxygen evolution. Adv. Sci. 10, 2206107 (2023).
Zhao, J. et al. Sub-nanometer-scale fine regulation of interlayer distance in Ni-Co layered double hydroxides leading to high-rate supercapacitors. Nano Energy 76, 105026 (2020).
Zhao, J. et al. Insight into the decay mechanism of cycling capacitance for layered double hydroxides at subnanometer scale. Chem. Commun. 58, 9124–9127 (2022).
Zhao, J. et al. Balancing loading mass and gravimetric capacitance of NiCo−layered double hydroxides to achieve ultrahigh areal performance for flexible supercapacitors. Adv. Powder Mater. 3, 100151 (2024).
Li, N. et al. Identification of the active-layer structures for acidic oxygen evolution from 9R-BaIrO3 electrocatalyst with enhanced iridium mass activity. J. Am. Chem. Soc. 143, 18001–18009 (2021).
Yang, Y. et al. Enhancing water oxidation of Ru single atoms via oxygen-coordination bonding with NiFe layered double hydroxide. ACS Catal. 13, 2771–2779 (2023).
Hu, Y. et al. Single Ru atoms stabilized by hybrid amorphous/crystalline FeCoNi layered double hydroxide for ultraefficient oxygen evolution. Adv. Energy Mater. 11, 2002816 (2021).
Duan, X. et al. Stabilizing single-atomic ruthenium by ferrous ion doped NiFe-LDH towards highly efficient and sustained water oxidation. Chem. Eng. J. 466, 136962 (2022).
Wang, Y. et al. Interfacial synergy between dispersed Ru sub-nanoclusters and porous NiFe layered double hydroxide on accelerated overall water splitting by intermediate modulation. Nanoscale 12, 9669–9679 (2020).
Jia, C. et al. Ir single atoms modified Ni(OH)2 nanosheets on hierarchical porous nickel foam for efficient oxygen evolution. Nano Res. 15, 10014–10020 (2022).
Xing, Y., Ku, J., Fu, W., Wang, L. & Chen, H. Inductive effect between atomically dispersed iridium and transition-metal hydroxide nanosheets enables highly efficient oxygen evolution reaction. Chem. Eng. J. 395, 125149 (2020).
He, Q. et al. Confining high-valence iridium single sites onto nickel oxyhydroxide for robust oxygen evolution. Nano Lett. 22, 3832–3839 (2022).
Zhang, Z. et al. Selectively anchoring single atoms on specific sites of supports for improved oxygen evolution. Nat. Commun. 13, 2473 (2022).
Zhang, J. et al. Single-atom Au/NiFe layered double hydroxide electrocatalyst: probing the origin of activity for oxygen evolution reaction. J. Am. Chem. Soc. 140, 3876–3879 (2018).
Li, J., Li, Z., Zhan, F. & Shao, M. Phase engineering of cobalt hydroxide toward cation intercalation. Chem. Sci. 12, 1756–1761 (2021).
Nørskov, J. K., Abild-Pedersen, F., Studt, F. & Thomas, B. Density functional theory in surface chemistry and catalysis. PNAS 108, 937–943 (2011).
Hu, Q. et al. Subnanometric Ru clusters with upshifted d band center improve performance for alkaline hydrogen evolution reaction. Nat. Commun. 13, 3958 (2022).
Shi, H. et al. A sodium-ion-conducted asymmetric electrolyzer to lower the operation voltage for direct seawater electrolysis. Nat. Commun. 14, 3934 (2023).
