Engineering Proton-Deficient Micro-Environments on Co-cluster/atom Ensembles for Efficient Cyclooctasulfur Electrosynthesis From Sulfur Dioxide
Engineering Proton-Deficient Micro-Environments on Co-cluster/atom Ensembles for Efficient Cyclooctasulfur Electrosynthesis From Sulfur Dioxide
研究概述
设计Co团簇/单原子组合位点，在酸性SO2还原过程中增强吸附与氢化，形成局域缺质子环境以抑制析氢，并通过降低S8亲和力减缓钝化。S8法拉第效率87%，产率2802.6 μmol·mg⁻¹·h⁻¹；7次循环电位保持率80.5%。
谱图与表征信息
FIGURE 2 (a) Schematic illustration of the fabrication process for CoC/SA-NC. (b) XRD pattern, (c,d) SEM and TEM images (inset: SAED images), (e) AC-HAADF-STEM image, and (f) EDS element maps of CoC/SA-NC. (g,h) Measured N 1s and Co 2p XPS spectra, respectively. (i,j) Experimental XANES and FT-EXAFS spectra in R-space.