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
Towards flexible solid-state supercapacitors for smart and wearable electronics
TL;DR: The state-of-the-art advancements in FSSCs are reviewed to provide new insights on mechanisms, emerging electrode materials, flexible gel electrolytes and novel cell designs.
Journal ArticleDOI
Bio-Integrated Wearable Systems: A Comprehensive Review
Tyler R. Ray,Jungil Choi,Amay J. Bandodkar,Siddharth Krishnan,Philipp Gutruf,Limei Tian,Roozbeh Ghaffari,John A. Rogers +7 more
TL;DR: This review summarizes the latest advances in this emerging field of "bio-integrated" technologies in a comprehensive manner that connects fundamental developments in chemistry, material science, and engineering with sensing technologies that have the potential for widespread deployment and societal benefit in human health care.
Journal ArticleDOI
Towards establishing standard performance metrics for batteries, supercapacitors and beyond.
Abolhassan Noori,Maher F. El-Kady,Mohammad S. Rahmanifar,Richard B. Kaner,Mir Fazlollah Mousavi +4 more
TL;DR: An overview of the energy storage devices from conventional capacitors to supercapacitors to hybrid systems and ultimately to batteries is provided, although the focus is kept on capacitive and hybrid energy storage systems.
Journal ArticleDOI
Mixed Metal Sulfides for Electrochemical Energy Storage and Conversion
Xin-Yao Yu,Xiong Wen David Lou +1 more
TL;DR: Mixed metal sulfides (MMS) have attracted increased attention as promising electrode materials for electrochemical energy storage and conversion systems including lithium-ion batteries (LIBs), SIBs, hybrid supercapacitors (HSCs), metal-air batteries (MABs), and water splitting as discussed by the authors.
Journal Article
Fabrication of symmetric supercapacitors based on MOF-derived nanoporous carbons
Rahul R. Salunkhe,Yuichiro Kamachi,Nagy L. Torad,Soo Min Hwang,Ziqi Sun,Shi Xue Dou,Jung Ho Kim,Yusuke Yamauchi +7 more
TL;DR: In this paper, a symmetric supercapacitor based on Nanoporous Carbon (NPC) was designed by direct carbonization of Zn-based metal-organic frameworks (MOFs) without using an additional precursor.
References
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Journal ArticleDOI
Microstructural design of hybrid CoO@NiO and graphene nano-architectures for flexible high performance supercapacitors
TL;DR: In this paper, the authors demonstrate the rational design and fabrication of CoO nano-architectures with different morphologies (sheet-like, petal-like and urchin-like) on flexible activated carbon textiles (ACTs).
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In situ growth of burl-like nickel cobalt sulfide on carbon fibers as high-performance supercapacitors
TL;DR: In this article, a facile one-step route to the development of burl-like NiCo2S4 on carbon fiber paper/cloth (CFP/CFC) used as electrodes for supercapacitors is described.
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Synthesis of hierarchical porous carbons for supercapacitors from coal tar pitch with nano-Fe2O3 as template and activation agent coupled with KOH activation
TL;DR: In this paper, hierarchical porous carbons (HPCs) for supercapacitors were synthesized from coal tar pitch using nano-sized γ-Fe2O3 as a template and activation agent coupled with KOH activation by conventional and microwave heating.
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Synthesis of bacteria promoted reduced graphene oxide-nickel sulfide networks for advanced supercapacitors.
TL;DR: The results indicate that the reduced graphene oxide-nickel sulfide network promoted by bacteria is a promising electrode material for supercapacitors.
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Flexible Three-Dimensional Nanoporous Metal-Based Energy Devices
TL;DR: A flexible three-dimensional nanoporous NiF2-dominant layer on poly(ethylene terephthalate) has been developed and maintains its high performance under long-term cycling and different bending conditions.