Recent Advances in Nanowire‐Based, Flexible, Freestanding Electrodes for Energy Storage

Abstract

The rational design of flexible electrodes is essential for achieving high performance in flexible and wearable energy-storage devices, which are highly desired with fast-growing demands for flexible electronics. Owing to the one-dimensional structure, nanowires with continuous electron conduction, ion diffusion channels, and good mechanical properties are particularly favorable for obtaining flexible freestanding electrodes that can realize high energy/power density, while retaining long-term cycling stability under various mechanical deformations. This Minireview focuses on recent advances in the design, fabrication, and application of nanowire-based flexible freestanding electrodes with diverse compositions, while highlighting the rational design of nanowire-based materials for high-performance flexible electrodes. Existing challenges and future opportunities towards a deeper fundamental understanding and practical applications are also presented.

Robust High‐Temperature Supercapacitors Based on SiC Nanowires

“…The SiC nanowires are etched with much more exposed active sites and in situ grown on the CF substrate, which could adjust the volume variation and maintain the structural stability during the charge‐discharge process at high temperatures. [ 34,48 ]…”

Novel NiMgOH-rGO-Based Nanostructured Hybrids for Electrochemical Energy Storage Supercapacitor Applications: Effect of Reducing Agents

“…Practically, energy storage systems are widely demonstrated and reported for good performance and robustness [7,8]. The physicochemical properties of the electrode material are important in improving the supercapacitor's performance [9,10].…”

Electroactive interpenetrated biohydrogels as hybrid materials based on conducting polymers

“…2,3 However, flexible and wearable bioelectronics demands novel electrodes design to achieve high performance in flexible electronic appliances, such as wearable devices, roll-up displays, artificial skins, and implantable medical devices. 4 Discussions regarding materials that could be used to construct flexible freestanding electrodes for energy storage or other flexible electronic devices have dominated research in recent years. [4][5][6][7][8][9] Particular attention should be paid to the electrically conductive hydrogels (ECHs) as an emerging class of hydrogels with interesting properties, which allows to easily combine the structural properties of an hydrophilic matrix with the electric conductivity of the filler material occupying the voids of the hydrogel matrix.…”

“…4 Discussions regarding materials that could be used to construct flexible freestanding electrodes for energy storage or other flexible electronic devices have dominated research in recent years. [4][5][6][7][8][9] Particular attention should be paid to the electrically conductive hydrogels (ECHs) as an emerging class of hydrogels with interesting properties, which allows to easily combine the structural properties of an hydrophilic matrix with the electric conductivity of the filler material occupying the voids of the hydrogel matrix. The most usual filler materials are metallic nanoparticles, conducting polymers (CPs), graphene, composites, silicon-based materials, or transition metal oxide-based materials.…”