[1] H.Fei, D.Druzhbin, T.Katsura. The effect of water on ionic conductivity in olivine. J. Geophys. Res.: Solid Earth, 125, e2019JB019313(2020).

[2] M.Hou et al. Superionic iron oxide–hydroxide in Earth’s deep mantle. Nat. Geosci., 14, 174-178(2021).

[3] W. L.Mao, H.Sheng, H.-k.Mao, Q.Hu, S.-c.Zhu. Hydrogen-bond symmetrization breakdown and dehydrogenation mechanism of FeO₂H at high pressure. J. Am. Chem. Soc., 139, 12129-12132(2017).

[4] H.Gao et al. Superionic silica-water and silica-hydrogen compounds under high pressure(2021).

[5] R.Tang et al. Chemistry and P-V-T equation of state of FeO₂H_x at the base of Earth’s lower mantle and their geophysical implications. Sci. Bull, 66, 1954-1958(2021).

[6] J.Liu, Q.Hu. Deep mantle hydrogen in the pyrite-type FeO₂–FeO₂H system. Geosci. Front., 12, 975-981(2021).

[7] C.Holzapfel, D. C.Rubie, D. J.Frost, F.Langenhorst. Fe–Mg interdiffusion in (Mg,Fe)SiO₃ perovskite and lower mantle reequilibration. Science, 309, 1707(2005).

[8] B. K.Clark, S.Torquato, J.Sun, R.Car. The phase diagram of high-pressure superionic ice. Nat. Commun., 6, 8156(2015).

[9] Q.Hu et al. Mineralogy of the deep lower mantle in the presence of H₂O. Natl. Sci. Rev., 8, nwaa098(2021).

[10] S.Tagawa et al. Experimental evidence for hydrogen incorporation into Earth’s core. Nat. Commun., 12, 2588(2021).