苏徽教授在Advanced Materials发表共同一作学术论文，署名单位为“光能转换材料湖南省高校重点实验室”。论文标题：Boosting Efficient and Sustainable Alkaline Water Oxidation on W-Coooh-TT Pair Sites Catalyst Synthesized via Topochemical Transformation。

The development of facile methods for constructing highly active, cost-effective catalysts that meet ampere-level current density and durability requirements for an oxygen evolution reaction is crucial. Herein, we posit a general topochemical transformation strategy: the M-Co9S8 single atom catalysts (SACs) are directly converted into M-CoOOH-TT (M  =  W, Mo, Mn, V) pair sites catalysts under the role of incorporating of atomically dispersed high valence metals modulators through potential cycling. Furthermore, in situ X-ray absorption fine structure spectroscopy was used to track the dynamic topochemical transformation process at the atomic level. The W-Co9S8 breaks through the low overpotential of 160 mV at 10 mA cm−2. A series of pair-site catalysts exhibit a large current density approaching 1,760 mA cm−2 at 1.68 V versus RHE in alkaline water oxidation and achieve a ∼240-fold enhancement in the normalized intrinsic activity compared to that reported CoOOH, and sustainable stability of 1,000 h. Moreover, we confirmed the O–O bond formation via a two-site mechanism, supported by in situ synchrotron radiation infrared and DFT simulations, which breaks the limit of adsorption–energy scaling relationship on conventional single-site.

第一作者：L.G. Wang, H. Su, G.Y. Tan, J.J. Xin

通讯作者：Q. Liu, X. Sun, J. Sun

发表期刊：Advanced Materials

在线发表时间：2023-07-11

文章链接：https://onlinelibrary.wiley.com/doi/10.1002/adma.202302642