Nature CommunicationsCr and Nd co-doped cobalt oxide for stable proton exchange membrane water electrolysisTianshu GaoFuhua LiSung-Fu HungHongbin YangYulin SunKang-Shun PengQihao ShaQing MaoHuabing TaoPeng ChenBin Liu2026-04-13Full textDOI https://doi.org/10.1038/s41467-026-71066-y