RT Journal Article SR Electronic T1 O-coordinated W-Mo dual-atom catalyst for pH-universal electrocatalytic hydrogen evolution JF Science Advances JO Sci Adv FD American Association for the Advancement of Science SP eaba6586 DO 10.1126/sciadv.aba6586 VO 6 IS 23 A1 Yang, Yang A1 Qian, Yumin A1 Li, Haijing A1 Zhang, Zhenhua A1 Mu, Yuewen A1 Do, David A1 Zhou, Bo A1 Dong, Jing A1 Yan, Wenjun A1 Qin, Yong A1 Fang, Li A1 Feng, Renfei A1 Zhou, Jigang A1 Zhang, Peng A1 Dong, Juncai A1 Yu, Guihua A1 Liu, Yuanyue A1 Zhang, Xianming A1 Fan, Xiujun YR 2020 UL http://advances.sciencemag.org/content/6/23/eaba6586.abstract AB Single-atom catalysts (SACs) maximize the utility efficiency of metal atoms and offer great potential for hydrogen evolution reaction (HER). Bimetal atom catalysts are an appealing strategy in virtue of the synergistic interaction of neighboring metal atoms, which can further improve the intrinsic HER activity beyond SACs. However, the rational design of these systems remains conceptually challenging and requires in-depth research both experimentally and theoretically. Here, we develop a dual-atom catalyst (DAC) consisting of O-coordinated W-Mo heterodimer embedded in N-doped graphene (W1Mo1-NG), which is synthesized by controllable self-assembly and nitridation processes. In W1Mo1-NG, the O-bridged W-Mo atoms are anchored in NG vacancies through oxygen atoms with W─O─Mo─O─C configuration, resulting in stable and finely distribution. The W1Mo1-NG DAC enables Pt-like activity and ultrahigh stability for HER in pH-universal electrolyte. The electron delocalization of W─O─Mo─O─C configuration provides optimal adsorption strength of H and boosts the HER kinetics, thereby notably promoting the intrinsic activity.