Multifunctional smart windows infuse multiple application to bring out the synergistic effect of each application. However, researchers must exploit the inherent properties of materials to develop multifunctional smart windows that can cater to consumer needs. The integration of smart windows into the construction of green buildings shows great promise, but mutual working mechanisms must be achieved to produce a synergistic effect toward high-performance smart window technology. Multifunctional smart windows can be achieved by incorporating applications, such as electrochromic, thermochromic, photochromic, and supercapacitor technologies, into one device. In the future, multifunctional smart windows technology could be applied to more buildings and retrofits to reduce energy consumption and increase human comfort.Electrochromic supercapacitor technology (EST) emerges as a highly versatile energy storage device with significant promise for green building and the advancement of sustainable urban environments aligned with Sustainable Development Goals (SDG), particularly SDG11 (sustainable cities and communities) and SDG13 (climate action). Intriguingly, EST exhibits the unique capability to undergo reversible coloration with minimal voltage input, leading to the obstruction of visible light and solar irradiation. New composites materials such as MXene incorporated with bimetallic phosphate is expected to enhance both electrochromism and energy storage properties due to their synergistic effect towards high performances electrochromic supercapacitor device.

Muhammad Norhaffis Bin Mustafa initiated his academic odyssey at Universiti Putra Malaysia, culminating in the acquisition of a Bachelor's degree in Chemistry, a four-year endeavour spanning from 2011 to 2014. Subsequently, he pursued further academic advancement, culminating in a Master's degree in Materials Science attained over a three-year period, from 2015 to 2017. His academic trajectory culminated with the successful completion of a Doctoral Philosophy degree in Materials Science, an accomplishment realized within a two-year timeframe, spanning from 2018 to 2020. Currently, he serves as a Post-Doctoral Research Fellow at Sunway University, focusing on developing innovative materials for smart windows that respond to electricity, light, or temperature changes. His notable achievements include 28 research publications with 387 citation (H-index 14), fourfiled patents, and awards such as the Metrohm Young Chemistry Award and Anugerah Siswazah Cemerlang Master Sains in 2018.