1 Nishiyama, H. et al. Photocatalytic solar hydrogen production from water on a 100-m2 scale. Nature 598, 304-307 (2021).
2 Jiao, S., Fu, X., Wang, S. & Zhao, Y. Perfecting electrocatalysts via imperfections: towards the large-scale deployment of water electrolysis technology. Energy Environ. Sci. 14, 1722-1770 (2021).
3 Zhuang, Z. et al. Three-dimensional open nano-netcage electrocatalysts for efficient pH-universal overall water splitting. Nat. Commun. 10, 4875 (2019).
4 Morales-Guio, C. G., Stern, L.-A. & Hu, X. Nanostructured hydrotreating catalysts for electrochemical hydrogen evolution. Chem. Soc. Rev. 43, 6555-6569 (2014).
5 Zou, X. & Zhang, Y. Noble metal-free hydrogen evolution catalysts for water splitting. Chem. Soc. Rev. 44, 5148-5180 (2015).
6 Zhang, B. et al. Homogeneously dispersed multimetal oxygen-evolving catalysts. Science 352, 333-337 (2016).
7 Zhang, Q., Bedford, N. M., Pan, J., Lu, X. & Amal, R. A fully reversible water electrolyzer cell made up from FeCoNi (Oxy)hydroxide atomic layers. Advanced Energy Materials 9, 1901312 (2019).
8 Cui, Y. et al. Trace oxophilic metal induced surface reconstruction at buried RuRh cluster interfaces possesses extremely fast hydrogen redox kinetics. Nano Energy 90, 106579 (2021).
9 Kim, H. et al. Identification of single-atom Ni site active toward electrochemical CO2 conversion to CO. J. Am. Chem. Soc. 143, 925-933 (2021).
10 Liang, J. et al. Bowl-like SnO2@carbon hollow particles as an advanced anode material for Lithium-Ion batteries. Angew. Chem. Int. Edit. 53, 12803-12807 (2014).
11 Görlin, M. et al. Oxygen evolution reaction dynamics, faradaic charge efficiency, and the active metal redox states of Ni–Fe oxide water splitting electrocatalysts. Journal of the American Chemical Society 138, 5603-5614 (2016).
12 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).
13 Zhou, L., Zhang, C., Zhang, Y., Li, Z. & Shao, M. Host modification of layered double hydroxide electrocatalyst to boost the thermodynamic and kinetic activity of oxygen evolution reaction. Adv. Funct. Mater. 31, 2009743 (2021).
14 Kang, J. et al. Valence oscillation and dynamic active sites in monolayer NiCo hydroxides for water oxidation. Nat. Catal. 4, 1050-1058 (2021).
15 Chala, S. A. et al. Site activity and population engineering of NiRu-layered double hydroxide nanosheets decorated with silver nanoparticles for oxygen evolution and reduction reactions. ACS Catal. 9, 117-129 (2019).
16 Zhang, S. L. et al. Metal atom-doped Co3O4 hierarchical nanoplates for electrocatalytic oxygen evolution. Adv. Mater. 32, 2002235 (2020).
17 Lu, X. & Zhao, C. Electrodeposition of hierarchically structured three-dimensional nickel–iron electrodes for efficient oxygen evolution at high current densities. Nat. Commun. 6, 6616 (2015).
18 Chen, Z. et al. Oriented transformation of Co-LDH into 2D/3D ZIF-67 to achieve Co–N–C hybrids for efficient overall water splitting. Adv. Energy Mater. 9, 1803918 (2019).
19 He, D. et al. Active electron density modulation of Co3O4-based catalysts enhances their oxygen evolution performance. Angew. Chem. Int. Edit. 59, 6929-6935 (2020).
20 Wu, Z.-P. et al. Manipulating the local coordination and electronic structures for efficient electrocatalytic oxygen evolution. Adv. Mater. 33, 2103004 (2021).
21 Jiao, L. et al. Non-bonding interaction of neighboring Fe and Ni single-atom pairs on MOF-derived N-doped carbon for enhanced CO2 electroreduction. J. Am. Chem. Soc. 143, 19417-19424 (2021).
22 Chen, K. et al. Ultrasonic plasma engineering toward facile synthesis of single-atom M-N4/N-doped carbon (M = Fe, Co) as superior oxygen electrocatalyst in rechargeable zinc–air batteries. Nano-Micro Lett. 13, 60 (2021).
23 Hu, X. et al. Ru single atoms on N-doped carbon by spatial confinement and ionic substitution strategies for high-performance Li–O2 batteries. J. Am. Chem. Soc. 142, 16776-16786 (2020).
24 Kibsgaard, J., Jaramillo, T. F. & Besenbacher, F. Building an appropriate active-site motif into a hydrogen-evolution catalyst with thiomolybdate [Mo3S13]2−clusters. Nat. Chem. 6, 248-253 (2014).
25 Li, F. et al. Balancing hydrogen adsorption/desorption by orbital modulation for efficient hydrogen evolution catalysis. Nat. Commun. 10, 4060 (2019).
26 Chen, D. et al. Ultralow Ru loading transition metal phosphides as high-efficient bifunctional electrocatalyst for a solar-to-hydrogen generation system. Adv. Energy Mater. 10, 2000814 (2020).
27 Wen, C. et al. Roles of the narrow electronic band near the Fermi level in 1T-TaS2 related layered materials. Phys. Rev. Lett. 126, 256402 (2021).
28 Pham, P. V. et al. 2D Heterostructures for ubiquitous electronics and optoelectronics: principles, opportunities, and challenges. Chem. Rev. DOI:10.1021/acs.chemrev.1c00735 (2022).
29 Lei, L. et al. Demystifying the active roles of NiFe-based oxides/(oxy)hydroxides for electrochemical water splitting under alkaline conditions. Coordin. Chem. Rev. 408, 213177 (2020).
30 Guo, Y. et al. Low-temperature CO2 methanation over CeO2-supported Ru single atoms, nanoclusters, and nanoparticles competitively tuned by strong metal–support interactions and H-spillover effect. ACS Catal. 8, 6203-6215 (2018).
31 Su, P. et al. Exceptional electrochemical her performance with enhanced electron transfer between ru nanoparticles and single atoms dispersed on a carbon substrate. Angew. Chem. Int. Edit. 60, 16044-16050 (2021).
32 Bai, J. et al. Molybdenum-promoted surface reconstruction in polymorphic cobalt for initiating rapid oxygen evolution. Adv. Energy Mater. 12, 2103247 (2022).