Recent developments of advanced micro-supercapacitors: design, fabrication and applications

Abstract

The rapid development of wearable, highly integrated, and flexible electronics has stimulated great demand for on-chip and miniaturized energy storage devices. By virtue of their high power density and long cycle life, micro-supercapacitors (MSCs), especially those with interdigital structures, have attracted considerable attention. In recent years, tremendous theoretical and experimental explorations have been carried out on the structures and electrode materials of MSCs, aiming to obtain better mechanical and electrochemical properties. The high-performance MSCs can be used in many fields, such as energy storage and medical assistant examination. Here, this review focuses on the recent progress of advanced MSCs in fabrication strategies, structural design, electrode materials design and function, and integrated applications, where typical examples are highlighted and analyzed. Furthermore, the current challenges and future development directions of advanced MSCs are also discussed.

Review on Comparison of Different Energy Storage Technologies Used in Micro-Energy Harvesting, WSNs, Low-Cost Microelectronic Devices: Challenges and Recommendations

“…The main problem in electric vehicles is the loss of kinetic energy, according to [ 41 ], the solution of this problem is regenerative braking by the application of supercapacitors; this also neglects the reduced efficiency of the battery. The combination of lithium-ion batteries and supercapacitors is doing very well in different electric applications, such as the following: toys, drones, low-cost microelectronic devices, and MEH [ 42 , 43 ]. One disadvantage of this proposed system is that the ESR of the battery is lower than the supercapacitors, so for the synchronization of these two devices, a feedback system is required.…”

Fabrication and Supercapacitor Applications of Multiwall Carbon Nanotube Thin Films

“…Carbon nanotubes are ideal for use in energy storage devices due to excellent conductivity that improves the power density; their one-dimensional geometry; mechanical strength that allows them to support the electrode and withstand stresses during electrochemical cycling; high specific surface area that increases the contact between electrode and electrolyte and promotes charge transfer; and low mass density [90]. Several reviews have discussed the use of carbon materials in supercapacitors and micro-supercapacitors [91].…”

“…strength that allows them to support the electrode and withstand stresses during electrochemical cycling; high specific surface area that increases the contact between electrode and electrolyte and promotes charge transfer; and low mass density [90]. Several reviews have discussed the use of carbon materials in supercapacitors and micro-supercapacitors [91]. Table 2 summarizes some of the previous publications that have investigated carbonaceous materials in supercapacitor electrodes, as well as properties obtained in our group with MWCNTs.…”

Chemical Vapor Deposition of Ionic Liquids for the Fabrication of Ionogel Films and Patterns

“…For the first time, we demonstrated the CVD of an IL. The strength of the IL-CVD method to deposit ionogel microstructures and the ability of the vaporized precursors to conformally coat three-dimensional substrates will facilitate leveraging the properties of ILs in a range of devices and applications including microsupercapacitors and microbatteries, [80][81][82][83] solar cells, [11,12] actuators, [19] sensors, [15,16,29,30] membrane separation processes, [84] and display textiles. [85]…”