EN

  • 附件【advs.201903089.pdf】已下载

Y.G. Li, Z.-S. Wu,* P.F. Lu, X. Wang, W. Liu, Z.B. Liu, J.Y. Ma, W.C. Ren, Z. Jiang,* X.H. Bao 
Advanced Science, 2020, 7, 1903089.
DOI: 10.1002/advs.201903089 [PDF]

发布时间:2019-11-22    栏目名称:2020

Y.G. Li, Z.-S. Wu,* P.F. Lu, X. Wang, W. Liu, Z.B. Liu, J.Y. Ma, W.C. Ren, Z. Jiang,* X.H. Bao

Advanced Science, 2020, 7, 1903089.

DOI: 10.1002/advs.201903089 [PDF]

Single‐atom catalysts (SACs) are efficient for maximizing electrocatalytic activity, but have unsatisfactory activity for the oxygen evolution reaction (OER). Herein, the NaCl template synthesis of individual nickel (Ni) SACs is reported, bonded to oxygen sites on graphene‐like carbon (denoted as Ni‐O‐G SACs) with superior activity and stability for OER. A variety of characterizations unveil that the Ni‐O‐G SACs present 3D porous framework constructed by ultrathin graphene sheets, single Ni atoms, coordinating nickel atoms to oxygen. Consequently, the catalysts are active and robust for OER with extremely low overpotential of 224 mV at current density of 10 mA cm−2, 42 mV dec−1 Tafel slope, oxygen production turn over frequency of 1.44 S−1 at 300 mV, and long‐term durability without significant degradation for 50 h at exceptionally high current of 115 mA cm−1, outperforming the state‐of‐the‐art OER SACs. A theoretical simulation further reveals that the bonding between single nickel and oxygen sites results in the extraordinary boosting of OER performance of Ni‐O‐G SACs. Therefore, this work opens numerous opportunities for creating unconventional SACs via metal–oxygen bonding.

中国科学院大连化学物理研究所

大连市中山路457号

邮编:116023

版权所有 © 二维材料化学与能源应用研究组

首页 / 组长简介 / 研究方向 / 研究组成员 / 发表论文 / 新闻 / 联系我们