supercapcitor_setup

  • Recent Advances in Flexible/Stretchable Supercapacitors for Wearable Electronics
    by La Li, Zheng Lou, Di Chen, Kai Jiang, Wei Han, Guozhen Shen on November 22, 2017 at 9:03 am

    The popularization of personalized wearable devices has accelerated the development of flexible/stretchable supercapacitors (SCs) that possess remarkable features of miniaturization, high security, and easy integration to build an all-in-one integrated system, and realize the functions of comfortable, noninvasive and continuous health monitoring, motion records, and information acquisition, etc. This Review presents a brief phylogeny of flexible/stretchable SCs, represented by planar micro-supercapacitors (MSCs) and 1D fibrous SCs. The latest progress and advantages of different flexible/stretchable/self-healing substrate, solid-state electrolyte and electrode materials for the fabrication of wearable SCs devices are summarized. The various configurations used in planar MSCs and 1D fibrous SCs aiming at the improvement of performance are also discussed. In addition, from the viewpoint of practical value and large-scale production, a survey of integrated systems, from different types of SC powered wearable sensing (gas, pressure, tactile…) systems, wearable all-in-one systems (including energy harvest, storage, and functional groups), to device packaging is presented. Finally, the challenges and future perspectives of wearable SCs are also considered. Stretchable/flexible supercapacitors are essential in portable electronics and personalized wearable devices. A general overview on this emerging field is given, summarizing the recent active research and application perspectives in flexible/stretchable supercapacitors for wearable electronics. […]

  • High-Performance Ultrathin Flexible Solid-State Supercapacitors Based on Solution Processable Mo1.33C MXene and PEDOT:PSS
    by Leiqiang Qin, Quanzheng Tao, Ahmed El Ghazaly, Julia Fernandez-Rodriguez, Per O. Å. Persson, Johanna Rosen, Fengling Zhang on November 22, 2017 at 7:32 am

    MXenes, a young family of 2D transition metal carbides/nitrides, show great potential in electrochemical energy storage applications. Herein, a high performance ultrathin flexible solid-state supercapacitor is demonstrated based on a Mo1.33C MXene with vacancy ordering in an aligned layer structure MXene/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) composite film posttreated with concentrated H2SO4. The flexible solid-state supercapacitor delivers a maximum capacitance of 568 F cm−3, an ultrahigh energy density of 33.2 mWh cm−3 and a power density of 19 470 mW cm−3. The Mo1.33C MXene/PEDOT:PSS composite film shows a reduction in resistance upon H2SO4 treatment, a higher capacitance (1310 F cm−3) and improved rate capabilities than both pristine Mo1.33C MXene and the nontreated Mo1.33C/PEDOT:PSS composite films. The enhanced capacitance and stability are attributed to the synergistic effect of increased interlayer spacing between Mo1.33C MXene layers due to insertion of conductive PEDOT, and surface redox processes of the PEDOT and the MXene. A MXene-based solution processable flexible solid-state supercapacitor with high performance is developed from a MXene/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) composite film. After posttreatment with concentrated H2SO4, the PEDOT nanofiber network is aligned between the MXene sheets, leading to highly improved flexibility and, most importantly, improved capacitances (1310 F cm−3), rate-capabilities, and stability. […]

  • Energy Storage: Carbon Textile Decorated with Pseudocapacitive VC/VxOy for High-Performance Flexible Supercapacitors (Small 44/2017)
    by Do Van Lam, Hyung Cheoul Shim, Jae-Hyun Kim, Hak-Joo Lee, Seung-Mo Lee on November 22, 2017 at 7:14 am

    In article number 1702702, Do Van Lam, Seung-Mo Lee, and co-workers produce a mechanically/chemically-activated hybrid carbon textile fully decorated with pseudocapacitive VC/VxOy. Supercapacitors made of the hybrid textile exhibit greatly enhanced energy density (over 30 fold) and excellent cycle life compared to the pure carbonized textile. […]

  • Nitrogen-doped carbon nanotubes supported double-shelled hollow composite for asymmetric supercapacitor
    by Yayun Zheng on November 20, 2017 at 12:00 am

    New J. Chem., 2017, Accepted ManuscriptDOI: 10.1039/C7NJ03422A, PaperYayun Zheng, Jie Xu, Yan Zhang, Xiaoshan Yang, Yingjiu Zhang, Yuan yuan ShangIn this work, a unique N-C@NiMoO4 composite with double-shelled hollow microtube structure has been developed through a simple and low-cost growth process. The composite contains the NiMoO4 outer shell with...The content of this RSS Feed (c) The Royal Society of Chemistry […]

  • Facile synthesis of reduced holey graphene oxide for supercapacitors
    by Xinjun Hu on November 20, 2017 at 12:00 am

    Chem. Commun., 2017, Accepted ManuscriptDOI: 10.1039/C7CC07475A, CommunicationXinjun Hu, Dongchen Bai, Yiqi Wu, Songbo Chen, Yu Ma, Yue Lu, Yuanzhi Chao, Yongxiao BaiHydroxyl radicals ([round bullet, filled]OH) generated from a UV/O3 solution reaction is used to efficiently etch graphene oxide nanosheets under moderate conditions. Reduced holey graphene oxide is directly used as a supercapacitor...The content of this RSS Feed (c) The Royal Society of Chemistry […]

  • ITO nanoparticles break optical transparency/high-areal capacitance trade-off for advanced aqueous supercapacitors
    by Sebastiano Bellani on November 20, 2017 at 12:00 am

    J. Mater. Chem. A, 2017, Accepted ManuscriptDOI: 10.1039/C7TA09220B, CommunicationSebastiano Bellani, Leyla Najafi, Gabriele Tullii, Alberto Ansaldo, Reinier Oropesa-Nunez, Mirko Prato, Massimo Colombo, Maria Rosa Antognazza, Francesco BonaccorsoThe ever-increasing demand for energy storage in portable electronic devices is driving the research on supercapacitors technology. In this context, optical transparency and mechanical robustness of supercapacitors are the key...The content of this RSS Feed (c) The Royal Society of Chemistry […]

  • Flexible, Stretchable, and Transparent Planar Microsupercapacitors Based on 3D Porous Laser-Induced Graphene
    by Weixing Song, Jianxiong Zhu, Baoheng Gan, Shuyu Zhao, Hui Wang, Congju Li, Jie Wang on November 17, 2017 at 7:36 am

    The graphene with 3D porous network structure is directly laser-induced on polyimide sheets at room temperature in ambient environment by an inexpensive and one-step method, then transferred to silicon rubber substrate to obtain highly stretchable, transparent, and flexible electrode of the all-solid-state planar microsupercapacitors. The electrochemical capacitance properties of the graphene electrodes are further enhanced by nitrogen doping and with conductive poly(3,4-ethylenedioxythiophene) coating. With excellent flexibility, stretchability, and capacitance properties, the planar microsupercapacitors present a great potential in fashionable and comfortable designs for wearable electronics. The 3D network of porous graphene is directly produced by a one-step and inexpensive process of direct laser inducing on polyimide sheet. By transferring the laser-induced graphene, the obtained in-plane microsupercapacitors are extremely stretchable and flexible with a greatly high elasticity up to 400% of original length and a good long-term stretching stability. […]

  • Ultrathin nickel hydroxide on carbon coated 3D-porous copper structures for high performance supercapacitors
    by Ji-Hyun Jang on November 17, 2017 at 12:00 am

    Phys. Chem. Chem. Phys., 2017, Accepted ManuscriptDOI: 10.1039/C7CP07473E, CommunicationJi-Hyun Jang, Kyeong-Nam Kang, Ik-Hee Kim, Ananthakumar Ramadoss, SunI Kim, Jong-Chul YoonAn ultrathin nickel hydroxide layer electrodeposited on a carbon-coated three-dimensional porous copper structure (3D-C/Cu) is suggested as an additive and binder-free conductive electrode with short electron path distances, large electrochemical...The content of this RSS Feed (c) The Royal Society of Chemistry […]

  • Ultrathin nickel hydroxide on carbon coated 3D-porous copper structures for high performance supercapacitors
    by Ji-Hyun Jang on November 17, 2017 at 12:00 am

    Phys. Chem. Chem. Phys., 2017, Accepted ManuscriptDOI: 10.1039/C7CP07473E, CommunicationJi-Hyun Jang, Kyeong-Nam Kang, Ik-Hee Kim, Ananthakumar Ramadoss, SunI Kim, Jong-Chul YoonAn ultrathin nickel hydroxide layer electrodeposited on a carbon-coated three-dimensional porous copper structure (3D-C/Cu) is suggested as an additive and binder-free conductive electrode with short electron path distances, large electrochemical...The content of this RSS Feed (c) The Royal Society of Chemistry […]

  • Pulsed Electrochemical Mass Spectrometry for Operando Tracking of Interfacial Processes in Small-Time-Constant Electrochemical Devices such as Supercapacitors
    by Nicolas Batisse and Encarnación Raymundo-Piñero on November 14, 2017 at 2:46 pm

    ACS Applied Materials & InterfacesDOI: 10.1021/acsami.7b12068 […]

  • Freestanding NiFe Oxyfluoride Holey Film with Ultrahigh Volumetric Capacitance for Flexible Asymmetric Supercapacitors
    by Kun Liang, Kyle Marcus, Zhenzhong Yang, Le Zhou, Hao Pan, Yuanli Bai, Yingge Du, Mark H. Engelhard, Yang Yang on November 14, 2017 at 9:00 am

    In this work, a freestanding NiFe oxyfluoride (NiFeOF) holey film is prepared by electrochemical deposition and anodic treatments. With the combination of good electrical conductivity and holey structure, the NiFeOF holey film offers superior electrochemical performance with maximum specific capacitance of 670 F cm−3 (134 mF cm−2), due to the following reasons: (i) The residual metal alloy framework can be used as the current collector to improve electrode conductivity. Moreover, the as-prepared freestanding NiFeOF holey film can be used as a supercapacitor electrode without reliance on binders and other additives. The residual metal alloy framework and binder-free electrode effectively reduce electrode resistance, thus improving electron transport. (ii) The highly interconnected holey structure and hierarchical pore distribution provide a high specific surface area to improve electron transport, enhancing rapid ion transport, and mitigating diffusion limitations throughout the holey film. (iii) The excellent mechanical characteristics facilitate flexibility and cyclability related performance. Additionally, the NiFeOF holey film presents exceptional electrochemical performance, showing that it is a promising alternative for small/microsize electronic devices. A freestanding NiFe oxyfluoride (NiFeOF) holey film is prepared by electrochemical deposition and anodic treatments. With the combination of good electrical conductivity and holey structure, the NiFeOF holey film presents exceptional electrochemical performance with maximum specific capacitance of 670 F cm−3 (134 mF cm−2), showing that it is a promising alternative for small/microsize electronic devices. […]

  • Editable Supercapacitors with Customizable Stretchability Based on Mechanically Strengthened Ultralong MnO2 Nanowire Composite
    by Zhisheng Lv, Yifei Luo, Yuxin Tang, Jiaqi Wei, Zhiqiang Zhu, Xinran Zhou, Wenlong Li, Yi Zeng, Wei Zhang, Yanyan Zhang, Dianpeng Qi, Shaowu Pan, Xian Jun Loh, Xiaodong Chen on November 14, 2017 at 7:32 am

    Although some progress has been made on stretchable supercapacitors, traditional stretchable supercapacitors fabricated by predesigning structured electrodes for device assembling still lack the device-level editability and programmability. To adapt to wearable electronics with arbitrary configurations, it is highly desirable to develop editable supercapacitors that can be directly transferred into desirable shapes and stretchability. In this work, editable supercapacitors for customizable shapes and stretchability using electrodes based on mechanically strengthened ultralong MnO2 nanowire composites are developed. A supercapacitor edited with honeycomb-like structure shows a specific capacitance of 227.2 mF cm−2 and can be stretched up to 500% without degradation of electrochemical performance, which is superior to most of the state-of-the-art stretchable supercapacitors. In addition, it maintains nearly 98% of the initial capacitance after 10 000 stretch-and-release cycles under 400% tensile strain. As a representative of concept for system integration, the editable supercapacitors are integrated with a strain sensor, and the system exhibits a stable sensing performance even under arm swing. Being highly stretchable, easily programmable, as well as connectable in series and parallel, an editable supercapacitor with customizable stretchability is promising to produce stylish energy storage devices to power various portable, stretchable, and wearable devices. Editable supercapacitors with customizable stretchability, which can be directly transformed into various customizable shapes and stretchable structures, are developed. In particular, the supercapacitor with a honeycomb-like structure can maintain nearly 98% initial capacitance even after 10 000 stretch-and-release cycles under reversible 400% tensile strain. […]

  • Voltage-Controlled On/Off Switching of Ferromagnetism in Manganite Supercapacitors
    by Alan Molinari, Horst Hahn, Robert Kruk on November 13, 2017 at 11:20 am

    The ever-growing technological demand for more advanced microelectronic and spintronic devices keeps catalyzing the idea of controlling magnetism with an electric field. Although voltage-driven on/off switching of magnetization is already established in some magnetoelectric (ME) systems, often the coupling between magnetic and electric order parameters lacks an adequate reversibility, energy efficiency, working temperature, or switching speed. Here, the ME performance of a manganite supercapacitor composed of a ferromagnetic, spin-polarized ultrathin film of La0.74Sr0.26MnO3 (LSMO) electrically charged with an ionic liquid electrolyte is investigated. Fully reversible, rapid, on/off switching of ferromagnetism in LSMO is demonstrated in combination with a shift in Curie temperature of up to 26 K and a giant ME coupling coefficient of ≈226 Oe V−1. The application of voltages of only ≈2 V results in ultralow energy consumptions of about 90 µJ cm−2. This work provides a step forward toward low-power, high-endurance electrical switching of magnetism for the development of high-performance ME spintronics. Ferromagnetism of ultrathin films of LaSrMnO3 is reversibly switched on/off using an ionic liquid electrolyte as charging/discharging medium. It is demonstrated that solid/liquid magnetic supercapacitors allow for giant magnetoelectric effects in combination with high performance in terms of device endurance, switching speed, and energy consumption. […]

  • Constructing Ultrahigh-Capacity Zinc–Nickel–Cobalt Oxide@Ni(OH)2 Core–Shell Nanowire Arrays for High-Performance Coaxial Fiber-Shaped Asymmetric Supercapacitors
  • Metal-organic frameworks based on halogen-bridged dinuclear-Cu-nodes as promising materials for high performance supercapacitor electrodes
    by Xin Xiong on November 10, 2017 at 12:00 am

    CrystEngComm, 2017, Advance ArticleDOI: 10.1039/C7CE01840A, PaperXin Xiong, Liuyin Zhou, Wenjie Cao, Jiyuan Liang, Yazhen Wang, Siqian Hu, Fan Yu, Bao LiTwo halogen-bridged di-nuclear Cu-based 3D porous frameworks present high specific capacitance and good cycling stability.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry […]

  • Flexible, aqueous-electrolyte supercapacitors based on water-processable dioxythiophene polymer/carbon nanotube textile electrodes
    by Augustus[space]W. Lang on November 9, 2017 at 12:00 am

    J. Mater. Chem. A, 2017, 5,23887-23897DOI: 10.1039/C7TA07932J, PaperAugustus[space]W. Lang, James F. Ponder, Anna M. Osterholm, Nicole J. Kennard, Rayford H. Bulloch, John R. ReynoldsWater soluble-solvent resistant approach for aqueous supercapacitors.The content of this RSS Feed (c) The Royal Society of Chemistry […]

  • Macropore- and Micropore-Dominated Carbon Derived from Poly(vinyl alcohol) and Polyvinylpyrrolidone for Supercapacitor and Capacitive Deionization
    by Kexin Tang, Junjun Chang, Hongbin Cao, Chunlei Su, Yuping Li, Zisheng Zhang and Yi Zhang on November 8, 2017 at 1:50 pm

    ACS Sustainable Chemistry & EngineeringDOI: 10.1021/acssuschemeng.7b02307 […]

  • Ultrahigh-surface-area hierarchical porous carbon from chitosan: acetic acid mediated efficient synthesis and its application in superior supercapacitors
    by Jianyu Huang on November 8, 2017 at 12:00 am

    J. Mater. Chem. A, 2017, Advance ArticleDOI: 10.1039/C7TA08046H, PaperJianyu Huang, Yeru Liang, Hang Hu, Simin Liu, Yijin Cai, Hanwu Dong, Mingtao Zheng, Yong Xiao, Yingliang LiuAcetic acid mediated efficient synthesis of ultrahigh-surface-area hierarchical porous carbon from chitosan with very attractive capacitive properties was reported.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry […]

  • Heterojunction-Assisted Co3S4@Co3O4 Core–Shell Octahedrons for Supercapacitors and Both Oxygen and Carbon Dioxide Reduction Reactions
    by Yibo Yan, Kaixin Li, Xiaoping Chen, Yanhui Yang, Jong-Min Lee on November 7, 2017 at 2:30 pm

    Expedition of electron transfer efficiency and optimization of surface reactant adsorption products desorption processes are two main challenges for developing non-noble catalysts in the oxygen reduction reaction (ORR) and CO2 reduction reaction (CRR). A heterojunction prototype on Co3S4@Co3O4 core–shell octahedron structure is established via hydrothermal lattice anion exchange protocol to implement the electroreduction of oxygen and carbon dioxide with high performance. The synergistic bifunctional catalyst consists of p-type Co3O4 core and n-type Co3S4 shell, which afford high surface electron density along with high capacitance without sacrificing mechanical robustness. A four electron ORR process, identical to the Pt catalyzed ORR, is validated using the core–shell octahedron catalyst. The synergistic interaction between cobalt sulfide and cobalt oxide bicatalyst reduces the activation energy to convert CO2 into adsorbed intermediates and hereby enables CRR to run at a low overpotential, with formate as the highly selective main product at a high faraday efficiency of 85.3%. The remarkable performance can be ascribed to the synergistic coupling effect of the structured co-catalysts; heterojunction structure expedites the electron transfer efficiency and optimizes surface reactant adsorption product desorption processes, which also provide theoretical and pragmatic guideline for catalyst development and mechanism explorations. Heterojunction formed by the Co3S4@Co3O4 core–shell octahedrons largely contributes to the high performance in supercapacitors, oxygen reduction reactions, and carbon dioxide reduction reactions because of the improved surface electron density, electron transfer efficiency, surface reactant adsorption products desorption process, and synergistic effect between Co3S4 and Co3O4. Such heterojunction also prevents active sites leaching and leads to high catalytic stability. […]

  • Carbon-encapsulated NiO nanoparticle decorated single-walled carbon nanotube thin films for binderless flexible electrodes of supercapacitors
    by Abdul Majeed on November 7, 2017 at 12:00 am

    J. Mater. Chem. A, 2017, Advance ArticleDOI: 10.1039/C7TA08852C, PaperAbdul Majeed, Peng-Xiang Hou, Song Jiang, Jin-Cheng Li, Lin-Quan Ping, Guo-Xian Li, Feng Zhang, Chang Liu, Hui-Ming ChengA network of carbon-encapsulated NiO nanoparticle decorated SWCNTs enables easy electron transfer in the hybrid electrode and hence high capacity, good cycling performance, and excellent flexibility of supercapacitors.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry […]

 

The above contents are provided by The Royal Society of Chemistry, American Chemical Society, Nature Publishing Group and John Wiley & Sons.