Electrochromic devices, capable of modulating light transmittance
under the influence of an electric field, have garnered significant
interest in the field of smart windows and car rearview mirrors. However,
the development of high-performance electrochromic devices via large-scale
explorations under miscellaneous experimental settings remains challenging
and is still an urgent problem to be solved. In this study, we employed
a two-step machine learning approach, combining machine learning algorithms
such as KNN and XGBoost with the reality of electrochromic devices,
to construct a comprehensive evaluation system for electrochromic
materials. Utilizing our predictive evaluation system, we successfully
screened the preparation conditions for the best-performing device,
which was experimentally verified to have a high transmittance modulation
amplitude (62.6%) and fast response time (5.7 s/7.1 s) at 70 A/m2. To test its stability, experiments over a long cycle time
(1000 cycles) are performed. In this study, we develop an innovative
framework for assessing the performance of electrochromic material
devices. Our approach effectively filters experimental samples based
on their distinct properties, substantially minimizing the expenditure
of human and material resources in electrochromic research. Our approach
to a mathematical machine learning evaluation framework for device
performance has effectively propelled and informed research in electrochromic
devices.