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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Journal ArticleDOI
Flexible 3D core-shell nanoforest arrays trimetal electrode for high capacitance supercapacitor.
TL;DR: A 3D core-shell nanoforest arrays with hierarchical structure which directly grown on carbon cloth using a two-step bracket-hydrothermal method and electrodeposition process may provide a promising method for designing of flexible supercapacitor electrode materials.
Journal ArticleDOI
Gel-assisted synthesis of CuCoS nanosheets for lithium-ion batteries
TL;DR: In this article, a self-assembled Cu Co S nanosheets with hierarchical structure were obtained by means of a gelation-solvothermal process without using any surfactant or template and utilized as anode materials in lithium-ion batteries.
Journal ArticleDOI
Rational design of coralloid Co9S8–CuS hierarchical architectures for quantum dot-sensitized solar cells
Xiaodan Hong,Qun Liu,Xiaoyue Gao,Chunfeng He,Xingyan You,Xin Zhao,Xiang-Yang Liu,Xiang-Yang Liu,Meidan Ye +8 more
TL;DR: In this article, a seeding assistant strategy is applied to grow uniform and firm metal sulfide films on the fluorinated tin oxide (FTO) substrates via a multistep route.
Journal ArticleDOI
In‐situ Growth of Ultrathin NiO Nanosheets‐Arrays on MOF‐derived Porous Co3O4 Scaffolds as a High‐performance Cathode for Asymmetric Supercapacitors
TL;DR: In this paper , a core-shell structured Co3O4@NiO nanosheet-arrays were constructed on carbon cloth via facile chemical bath methods, which exhibited an outstanding areal capacitance and rate performance.
References
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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.