 Abstract Prussian Blue, PB, is an excellent electrochromic EC material, possessing many praiseworthy advantages such as proper redox potential, large transmittance, environmental benignity, neutral colored state, and low cost. However, the co-influence of weak interaction force and low electrical conductivity results in poor cyclic stability and slow switching speed. To address these issues, we have developed two new materials, point slash O and O slash PB, which are electro deposited onto PB to increase its conductivity and reduce polarization. This has resulted in improved electrical conductivity, increased contact area, and reduced stress and strain due to volume expansion during ion insertion slash extraction. Additionally, the point slash PB and O slash PB heterojunctions have a strong inner electronic field, which promotes the separation of electrons and holes and quickens charge transfer. As a result, the O slash PB film exhibits ultra-stable cyclic stability, 96.4 percent after 2000 cycles, fast coloration slash bleaching switching times, 1.36 slash 2.32 seconds, low charge transfer resistance, 3. This article was authored by Miao Su, Xinhuang, Xinyu Zhou, and others. We are article.tv, links in the description below.