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
More filters
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
More filters
Journal ArticleDOI
Hollow NiCo2S4 nanotube arrays grown on carbon textile as a self-supported electrode for asymmetric supercapacitors
TL;DR: In this paper, hollow NiCo2S4 nanotube arrays are successfully grown on carbon textile (CT) with robust adhesion through a two-step synthesis, involving the growth of a solid nanowire precursor and subsequent conversion into NiCo 2S 4 nanotubes using a sulfidation process.
Journal ArticleDOI
Capacitance of Fe3O4/rGO nanocomposites in an aqueous hybrid electrochemical storage device
TL;DR: In this paper, a serial internal hybrid of an alkaline battery and an electrochemical double layer capacitor (EDLC) was used as a negative electrode in an energy storage device, and the maximum voltage of a capacitor with Fe3O4/reduced graphene oxide (rGO) nanocomposite was established as 1.0
Journal ArticleDOI
Glycine-assisted hydrothermal synthesis of nanostructured Co x Ni 1−x –Al layered triple hydroxides as electrode materials for high-performance supercapacitors
TL;DR: In this paper, a facile hydrothermal method using glycine as a chelating agent was used to synthesize Nanostructured triple hydroxides with 3:2 molar ratio and a maximum specific capacitance of 1,375 F 1 g−1 at a current density of 0.5 A g− 1 and a good high rate capability.
Journal ArticleDOI
Controllable synthesis of Ni3−xCoxS4 nanotube arrays with different aspect ratios grown on carbon cloth for high-capacity supercapacitors
TL;DR: In this paper, the aspect ratios and electrochemical performance of Ni-Co sulfide nanotube arrays can be well controlled by manipulating the Co/Ni molar ratio, which can reach as high as 1856 F g−1 at 1 A g− 1.
Journal ArticleDOI
Layered Co–Mn hydroxide nanoflakes grown on carbon cloth as binder-free flexible electrodes for supercapacitors
Duo Wang,Junhui Li,Dan Zhang,Tao Liu,Ning Zhang,Limiao Chen,Xiaohe Liu,Renzhi Ma,Guanzhou Qiu +8 more
TL;DR: In this article, the layered Co-Mn hydroxide nanoflakes grown on carbon cloth (CC) have been successfully fabricated via a facile solvothermal method in a mixed solvent of water and methanol.