Figure 3 (IMAGE)

Tohoku University

Figure 3

Caption

Post-stability test characterization and theoretical insights. a) XRD patterns. Inset shows a magnified region of the (310) peak. High-resolution XPS spectra in b) Sb 4d + W 4f and c) Sb 3d + O 1s regions. HR-TEM image and EDX elemental mapping results of post-test catalyst in d) acidic and e) alkaline electrolytes. The scale bar for EDX mapping results is 50 nm. f) The stoichiometric pristine surface of Sb2WO6 (100) and its identified electrochemistry-induced surface state under ORR conditions from different views. g) Calculated surface Pourbaix diagram of Sb2WO6. h) pH-dependent microkinetic modeling of the ORR process at 0.8 VRHE. 

Credit

Hao Li et al.

Usage Restrictions

Reporters may use freely these materials in news coverage with appropriate credit information.

License

Original content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.