Cover Image, Volume 5, Number 5, May 2023

Abstract

Front cover image: Given a rise in the popularity of wearable electronics that are able to deform into desirable configurations while preserving electrochemical functionality, stretchable and flexible supercapacitors (SCs) have become increasingly of interest as innovative energy storage devices. In article number: https://doi.org/10.1002/cey2.320, Amiri et al. investigated various advancements and upcoming prospects of flexible and stretchable SCs including 1D fiber‐like SCs, 2D planar SCs, and 3D SCs. The fundamentals of stretchable SCs such as mechanisms, layouts, materials, and configuration designs associated with each configuration and their effects on mechanical and electrochemical properties are studied in details.

K-birnessite-MnO2/hollow mulberry-like carbon complexes with stabilized and superior rate performance for aqueous magnesium ion storage

“…With the increasing energy demand for modern technology and smart devices, the storage and transfer of renewable energy sources have become urgent issues. 1–17 Currently, rechargeable batteries (lithium/sodium ion batteries, etc .) and supercapacitors are the most promising energy storage devices for applications.…”

Molten salt technique for the synthesis of carbon-based materials for supercapacitors

“…1–3 Supercapacitors are considered to be a promising new generation of energy storage devices due to their advantages such as super-large capacity, high power density, long cycle life, and high charging and discharging efficiency. 4–14 Supercapacitors can be divided into two categories based on their energy storage principle: electric-double layer capacitors and Faraday quasi-capacitors. 15 Faraday quasi-capacitors mainly achieve energy storage and conversion by generating Faraday quasi-capacitors through reversible redox reactions on and near the surface of active electrode materials.…”

Sulfurization of Electrode Material: A Promising Window for Supercapacitor Technology

“…The most recently employed electrode materials for stated tasks are carbon nanotubes, activated carbon, graphene, transition metal phosphatase, hydroxides, oxides and metal‐organic frameworks MOFs [16,17] . The pure approach for the implementation of these materials in practical assemblies has not yet achieved the expected (theoretical) outcomes [18] .…”