Electrochemical activated NiOOH/NiFeV-LDH@CC for highly efficient oxygen evolution reaction

The missing data have been marked in the table, and the vacancy proportion is extremely low, which will not affect the overall data analysis and experimental rule summary. The data contain systematic errors and manual operation errors within a reasonable range. The error sources mainly include the precision limitation of instruments, slight fluctuations of temperature and humidity in the experimental environment, differences in sample placement positions and manual reading deviations.

All data errors are within the industry allowable range and have no adverse impact on experimental conclusions and data analysis results. The submitted data files mainly include summary data sheets, original test data sheets and experimental parameter record sheets, which store sorted statistical data, instrument-derived raw data and basic experimental condition parameters respectively. All data files adopt common formats such as XLSX, CSV and TXT without rare special formats.

These files can be directly opened, viewed and edited by general office and data processing software including Office Excel, Notepad and Origin without dedicated professional software. Featuring high compatibility, the files are applicable to subsequent data analysis, plotting and secondary research.