Nano‐Engineered Materials for Transparent Supercapacitors

Abstract

Transparent supercapacitors are interesting for energy storage and management in future transparent electronics and have become an intriguing research topic at the interface of materials science, energy and electronics research. This minireview presents the recent progress in transparent supercapacitors, particularly the use of nano-engineered materials to construct transparent electrodes. Focusing on the two key features of transparency and capacitance, we analyze the influences of nanostructures on the electrode and device performances, and present the outlook the future perspectives for transparent supercapacitors.[a] J.

Two-dimensional WO3 nanosheets for high-performance electrochromic supercapacitors

“…Recently, electrochromic supercapacitors (ESCs), which can be reasonably developed based on the similar reaction kinetics, sandwich configuration, and electrode material properties between a supercapacitor and electrochromic device, have attracted much attention. 1,2 Such ESC devices not only help users to judge the energy state of the device and to infer the ongoing reaction of the electrode in a simple and visual manner, but also allow avoiding damage due to the overcharge/over-discharge of the device, creating a safer and more efficient operation. Generally speaking, the optical-electrochemical performance of ESC devices or the bifunctional electrode heavily depends on the bifunctional electrode material.…”

Flexible Transparent Supercapacitors: Materials and Devices

“…The electrode materials can be engineered into flexible transparent films through five typical design principles, i.e., ultrathin films, 1D NWs interlaced films, mesh‐like films, orderly patterned films, and interdigital films. [ 41 ] As the simplest strategies, ultrathin films can achieve a higher optical transmittance through reducing the film thickness. [ 24b,29 ] That is because when it is smaller than the lowest light adsorption thickness, the passed visible light makes it transparent.…”

Recent Development of Polyaniline/graphene Composite Electrodes for Flexible Supercapacitor Devices

“…[43,44] The 1D structure also offers a high specific surface area for charge storage and caters to the volume strain of polyaniline during charge/discharge. [45] In addition, it provides an efficient ion diffusion path, especially when the 1D structures are ordered in the nanoarray form. [46] 1D polyaniline/graphene composites can be fabricated by incorporating 1D polyaniline (e. g., nanofiber, nanoarray) with graphene or graphene fiber with polyaniline.…”