Journal ArticleDOI
Wearable High-Performance Supercapacitors Based on Silver-Sputtered Textiles with FeCo2S4–NiCo2S4 Composite Nanotube-Built Multitripod Architectures as Advanced Flexible Electrodes
TLDR
In this article, a novel flexible electrode with nanotube-built multitripod architectures of ternary metal sulfides' composites (FeCo2S4−NiCo 2S4) on a silver-sputtered textile cloth is presented.Abstract:
To achieve high-performance wearable supercapacitors (SCs), a new class of flexible electrodes with favorable architectures allowing large porosity, high conductivity, and good mechanical stability is strongly needed. Here, this study reports the rational design and fabrication of a novel flexible electrode with nanotube-built multitripod architectures of ternary metal sulfides' composites (FeCo2S4–NiCo2S4) on a silver-sputtered textile cloth. Silver sputtering is applicable to almost all kinds of textiles, and S2− concentration is optimized during sulfidation process to achieve such architectures and also a complete sulfidation assuring high conductivity. New insights into concentration-dependent sulfidation mechanism are proposed. The additive-free FeCo2S4–NiCo2S4 electrode shows a high specific capacitance of 1519 F g−1 at 5 mA cm−2 and superior rate capability (85.1% capacitance retention at 40 mA cm−2). All-solid-state SCs employing these advanced electrodes deliver high energy density of 46 W h kg−1 at 1070 W kg−1 as well as achieve remarkable cycling stability retaining 92% of initial capacitance after 3000 cycles at 10 mA cm−2, and outstanding reliability with no capacitance degradation under large twisting. These are attributed to the components' synergy assuring rich redox reactions, high conductivity as well as highly porous but robust architectures. An almost linear increase in capacitance with devices' area indicates possibility to meet various energy output requirements. This work provides a general, low-cost route to wearable power sources.read more
Citations
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Electrodeposition synthesis of reduced graphdiyne oxide/NiCo2S4 hierarchical nanosheet arrays for small size and light weight aqueous asymmetry supercapacitors
TL;DR: In this article , reduced graphdiyne oxide/NiCo2S4 hierarchical nanosheet array (r-GDYO/NiS4) electrodes are successfully synthesized by electrodeposition and hydrothermal method.
Journal ArticleDOI
Constructing Hollowly Bimetallic Selenides as Cathode for Aqueous Zinc Battery with Outstanding Rate Performance
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Design and Regulation of Feco2s4 Nanoneedles Deposited on Carbon Felt as Binder-Free Electrodes for High-Performance Hybrid Supercapacitor
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Understanding electrode-intermediate interaction of a highly active and cyclable FexCo1-xSy aerogel for Oxygen Evolution Reaction and pseudocapacitive applications
TL;DR: In this paper , a bimetallic sulfide aerogel with hierarchical porosity has been used for efficient OER and pseudocapacitive charge storage, with a specific capacitance of 3983.2 Fg-1 at 1 Ag-1 and a 46% increase in capacity retention.
Journal ArticleDOI
Modern Developments for Textile-Based Supercapacitors
TL;DR: In this paper , the authors examined recent developments in fabrication methods and materials used to create textile supercapacitors and what challenges still remain in the development of textile-based energy storage systems.
References
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Journal ArticleDOI
Flexible Energy-Storage Devices: Design Consideration and Recent Progress
TL;DR: This review describes the most recent advances in flexible energy-storage devices, including flexible lithium-ion batteries and flexible supercapacitors, based on carbon materials and a number of composites and flexible micro-supercapacitor.
Journal ArticleDOI
Flexible solid-state supercapacitors: design, fabrication and applications
TL;DR: Flexible solid-state supercapacitors (SCs) have attracted increasing interest because they can provide substantially higher specific/volumetric energy density compared to conventional capacitors.
Journal ArticleDOI
A Cost-Effective Supercapacitor Material of Ultrahigh Specific Capacitances: Spinel Nickel Cobaltite Aerogels from an Epoxide-Driven Sol–Gel Process
TL;DR: This work reported the first successful preparation of nickel cobaltite aerogels with the epoxide-driven sol–gel process, which showed an extremely high-specific capacitance of 1400 F g under a mass loading of 0.4 mg cm 2 at a sweep rate of 25mV s.
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Formation of nickel cobalt sulfide ball-in-ball hollow spheres with enhanced electrochemical pseudocapacitive properties
TL;DR: An anion exchange method is reported to synthesize a complex ternary metal sulfides hollow structure, namely nickel cobalt sulfide ball-in-ball hollow spheres that show long-term cycling performance and potential application in high-performance electrochemical capacitors.
Journal ArticleDOI
Design Hierarchical Electrodes with Highly Conductive NiCo2S4 Nanotube Arrays Grown on Carbon Fiber Paper for High-Performance Pseudocapacitors
TL;DR: The development of highly conductive NiCo2S4 single crystalline nanotube arrays grown on a flexible carbon fiber paper (CFP), which can serve not only as a good pseudocapacitive material but also as a three-dimensional conductive scaffold for loading additional electroactive materials.