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1.
Liping Zheng Xianyou Wang Hongfang An Xingyan Wang Lanhuan Yi Li Bai 《Journal of Solid State Electrochemistry》2011,15(4):675-681
Polyaniline (PANI)/carbon nanotubes (CNTs) composite electrode material was prepared by in situ chemical polymerization. The
structure and morphology of PANI/CNTs composite are characterized by Fourier infrared spectroscopy, scanning electron microscope,
and transmission electron microscopy. It has been found that a flocculent PANI was uniformly deposited on the surface of CNTs.
The supercapacitive behaviors of the PANI/CNTs composite materials are investigated with cyclic voltammetry, galvanostatic
charge/discharge, impedance, and cycle life measurements. The results show that the PANI/CNTs composite electrodes have higher
specific capacitances than CNT electrodes and better stability than the conducting polymers. The capacitance of PANI/CNTs
composite electrode is as high as 837.6 F g−1 measured by cyclic voltammetry at 1 mV s−1. Besides, the capacitance retention of coin supercapacitors remained 68.0% after 3,000 cycles. 相似文献
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An organic acid doped electronically conducting polymer nanomaterial, polythiophene‐tartaric acid (PTh‐TA) nanoparticles, was prepared by cationic surfactant‐assisted dilute polymerization method. The physical properties of the synthesized polymer were characterized by FT‐IR, UV‐visible spectroscopy, X‐ray diffraction, SEM, and electrical conductivity studies. The symmetric type redox supercapacitor performances were studied in PVdF‐HFP in 1 M LiPF6 containing EC&PC (1:1 v/v) based microporous polymer electrolyte. The specific capacitance of the capacitor was found to be 156 F g?1. The energy and power densities were calculated as 14 Wh kg?1 and 522 W kg?1, respectively. The value of capacitance was found to be almost stable up to 1000 cycles and even more. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
4.
Hui Xu Junlong Zhang Yong Chen Hailin Lu Junxia Zhuang 《Journal of Solid State Electrochemistry》2014,18(3):813-819
Polyaniline doped with Zn2+ (PANI/Zn2+) films was synthesized by cyclic voltammetric method on stainless steel mesh substrates in 0.2 mol L?1 aniline and 0.5 mol L?1 sulfuric acid electrolyte with various concentrations of zinc sulfate (ZnSO4·7H2O). The structure and morphology of PANI and PANI/Zn2+ films were characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy techniques, respectively. The electrochemical properties of PANI and PANI/Zn2+ films were investigated by cyclic voltammetry, galvanostatic charge–discharge test, and electrochemical impedance spectroscopy in 0.5 mol L?1 H2SO4 electrolyte in a three-electrode system. The results show that the surface morphology of PANI/Zn2+ is more rough than that of pure PANI. The specific capacitance of the PANI/Zn2+ film displays a larger specific capacitance of 738 F g?1, lower resistance, and better stability as compared with the pure PANI film. Thus, good capacitive performance demonstrates its potential superiority for supercapacitors. 相似文献
5.
Xinhong zhou Lanfeng Li Shanmu Dong Xiao Chen Pengxian Han Hongxia Xu Jianhua Yao Chaoqun Shang Zhihong Liu Guanglei Cui 《Journal of Solid State Electrochemistry》2012,16(3):877-882
A high-performance conducting polymer-activated carbon composite electrode material was prepared by potentiostatic deposition
of aniline on a hierarchically porous carbon, which was carbonized from the natural bamboo. The obtained composite combined
the contribution of the unique properties of the activated carbon and pseudocapacitance of the deposited polyaniline layer.
This active material possessed excellent rate capability and good cycle performance, over 92% of the original capacitance
is retained after 1,000 cycles. The energy density of the composite can reach 47.5 W h kg−1 calculated only by active mass. It can be a good candidate for high-performance supercapacitor. 相似文献
6.
A novel bimetallic Ni/Co-based metal-organic framework (Ni/Co-MOF) was successfully synthesized via a simple solvothermal method, which used as electrode material for high performance supercapacitors. 相似文献
7.
Iron tungstate (FeWO4) has been synthesized using two low-temperature synthetic routes and investigated as a new pseudocapacitive electrode material for supercapacitors operating in a neutral aqueous electrolyte. Its electrochemical properties are clearly related to the specific surface area and seem to originate from Fe3 +/Fe2 + fast surface reactions. For FeWO4 obtained by polyol-mediated synthesis, a high volumetric capacitance of 210 F·cm− 3 (i.e. more than two times higher than that of activated carbon) was measured at 20 mV·s− 1 with less than 5% fade over 10,000 cycles. Furthermore, unlike most of the previously investigated iron based electrodes, a unique pseudocapacitive behavior is observed, thus emphasizing the role of the crystallographic structure on the electrochemical signature. 相似文献
8.
Mi-Mi Wei Wen-Ping Li Jie Weng Yun-Quan Liu Shui-Rong Li Yue-Yuan Ye Meng Wang Duo Wang 《Journal of Saudi Chemical Society》2019,23(7):958-966
For the first time, toxic bio-tars collected from the gasification of pine sawdust are used as the precursor for activated carbons. Various types of activation agents including KOH, K2CO3, H3PO4 and ZnCl2 were screened for obtaining superior activated carbons. When KOH was used as an activation agent, the obtained activated carbons exhibited high specific surface area and large mesopore volume. The activated carbons were further employed to be the electrode material of supercapacitors, and its specific capacitance reached up to 260 F g?1 at 0.25 A g?1 current density. Also, it showed an excellent rate performance from preserving a relatively high specific capacitance of 151 F g?1 at 50 A g?1. The assembled device also exhibited the good electrochemical stability with the capacity retention of 90% after 5000 cycles. Furthermore, the maximum energy density of the activated carbons in organic electrolyte reached 17.8 Wh kg?1. 相似文献
9.
《Solid State Sciences》2012,14(6):677-681
The polyaniline/TiO2/graphene oxide (PANI/TiO2/GO) composite, as a novel supercapacitor material, is synthesized by in situ hydrolyzation of tetrabutyl titanate and polymerization of aniline monomer in the presence of graphene oxide. The morphology, composition and structure of the composites as-obtained are characterized by SEM, TEM, XRD and TGA. The electrochemical property and impedance of the composites are studied by cyclic voltammetry and Nyquist plot, respectively. The results show that the introduction of the GO and TiO2 enhanced the electrode conductivity and stability, and then improved the supercapacitive behavior of PANI/TiO2/GO composite. Significantly, the electrochemical measurement results show that the PANI/TiO2/GO composite has a high specific capacitance (1020 F g−1 at 2 mV s−1, 430 F g−1 at 1 A g−1) and long cycle life (over 1000 times). 相似文献
10.
Hongfang An Ying Wang Xianyou Wang Na Li Liping Zheng 《Journal of Solid State Electrochemistry》2010,14(4):651-657
Polyaniline (PANI)/carbon aerogel (CA) composite electrode materials were prepared by chemical oxidation polymerization. The
morphology of PANI/CA composite was examined by scanning electron microscopy. The results showed that PANI was uniformly deposited
onto the surface of porous CA and filled big inner pores of the CA. Electrochemical performance of the composite electrode
was studied by cyclic voltammograms and galvanostatic charge/discharge measurements. The results indicated that the PANI/CA
composite electrode had much better electrochemical performance, high reversibility, and high charge/discharge properties
than CA. Moreover, the results based on cyclic voltammograms showed that the composite material has a high specific capacitance
of 710.7 F g−1, while the capacitance of CA electrode was only 143.8 F g−1. Besides, the supercapacitor using the PANI/CA composite as electrode active material showed a stable cycle life in the potential
range of −0.2–0.8 V. 相似文献
11.
Rathore Hem Kanwar Hariram Muruganandham Awasthi Kamlendra Kumar Manoj Sarkar Debasish Ganesha Mukhesh K. Singh Ashutosh K. Das Debanjan Shukla Ashok 《Journal of Solid State Electrochemistry》2022,26(9):2039-2048
Journal of Solid State Electrochemistry - Synthesis of partially carbonized tungsten oxide employing a simple, one-step, and scalable in-situ reduction/carbonization process is reported along with... 相似文献
12.
Pomegranate rind-derived activated carbon as electrode material for high-performance supercapacitors
Furong Qin Kai Zhang Jie Li Yanqing Lai Hai Lu Wenwen Liu Fan Yu Xiaoke Lei Jing Fang 《Journal of Solid State Electrochemistry》2016,20(2):469-477
In this paper, activated carbon materials were synthesized from pomegranate rind through carbonization and alkaline activation processes. The effects of pyrolytic temperature on the textual properties and electrochemical performance were investigated. The surface area of the activated carbon can reach at least 2200 m2 g?1 at different pyrolytic temperatures. It was found that, at the range of 600–900 °C, decreasing the carbonization temperature leads to the increase of t-plot micropore area, t-plot micropore volume, and capacitance. Further decreasing the carbonization temperature to 500 °C also leads to the increase of t-plot micropore area and t-plot micropore volume, but the capacitance is slightly poorer. The activated carbon carbonized at 600 °C and activated at 800 °C possesses very high specific area (2931 m2 g?1) and exhibits very high capacitance (~268 F g?1 at 0.1 A g?1 and ~242 F g?1 at 1 A g?1). There is no capacitance fading after 2000th cycle. 相似文献
13.
Journal of Solid State Electrochemistry - Polyaniline-derived oxygen- and nitrogen-decorated hierarchical porous carbons (N/O-HPC) are easily prepared by fast electrochemical polymerization... 相似文献
14.
Xu Zichen Zhang Zhiqiang Li Mingyu Yin Huiling Lin Hongtao Zhou Jin Zhuo Shuping 《Journal of Solid State Electrochemistry》2019,23(12):3419-3428
Journal of Solid State Electrochemistry - In this work, three-dimensional ZnS/reduced graphene oxide/polypyrrole ternary composites were synthesized. The as-prepared composites are investigated as... 相似文献
15.
Well-dispersed resorcinol-formaldehyde-based carbon spheres (RFCs) have been prepared by the polycondensation of resorcinol and formaldehyde with ammonia as catalyst and subsequent carbonization of the obtained polymer. In situ polymerization of the aniline occurred in the suspension of the RFC, and RFC was surrounded by the polyaniline (PANI) wires. The PANI and RFC hybrid network (PRFC) formed gradually. In a three-electrode mode, the specific capacitance (C sp) of PRFC reaches 315 F g?1 at a current density of 1 A g?1 in 2 M H2SO4, much higher than that of pure PANI (225 F g?1) and RFC (121.7 F g?1). Furthermore, the C sp of PRFC retains 80.0 % after 1000 charge-discharge processes at a current density of 5 Ag?1. The enhanced electrochemical performance of the PRFC came from its homogeneous three-dimensional hierarchical network structure, good electric conductivity of the PANI around the RFC, and the synergistic effect between the RFC and PANI. 相似文献
16.
Daria V. Chernysheva Igor N. Leontyev Marina V. Avramenko Nikolay V. Lyanguzov Tatyana I. Grebenyuk Nina V. Smirnova 《Mendeleev Communications》2021,31(2):160-162
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17.
Qiao Shaoming Huang Naibao Zhang Junjie Zhang Yuanyuan Sun Yin Gao Zhengyuan 《Journal of Solid State Electrochemistry》2019,23(1):63-72
Journal of Solid State Electrochemistry - Fe-doped NiMnO3 nanosheet electrode material was successfully synthesized by convenient and efficient microwave-assisted hydrothermal method. The crystal... 相似文献
18.
Chongyong Ge Zhaohui Hou Binhong He Fanyan Zeng Jianguo Cao Yiming Liu Yafei Kuang 《Journal of Sol-Gel Science and Technology》2012,63(1):146-152
Dispersed three-dimensional (3D) flower-like nickel oxide on graphene sheets was synthesized by incorporating a facile hydrothermal process with a thermal treatment process. The possible growth mechanism of 3D flower-like NiO is discussed. When used as electrode materials for supercapacitors, the resultant composite exhibits a specific capacitance of 346F/g (1.5A/g), a good rate performance and cycle stability in 2?M KOH. NiO in the composite could provide a specific capacitance as high as 778.7F/g, compared to that of bare NiO of only 220F/g. The functional features of unique 3D flower-like NiO morphology, high conductivity of graphene sheets and its protective effect to the structure of NiO result in an improved electrochemical performance. 相似文献
19.
Journal of Solid State Electrochemistry - Recent applications of supercapacitors in modern society are limited due to their poor electrochemical properties like energy density and cyclic stability,... 相似文献
20.
Anki Reddy Mule Bhimanaboina Ramulu Shaik Junied Arbaz Anand Kurakula Jae Su Yu 《Journal of Energy Chemistry》2024,(1):579-591
Direct growth of redox-active noble metals and rational design of multifunctional electrochemical active materials play crucial roles in developing novel electrode materials for energy storage devices. In this regard, silver(Ag) has attracted great attention in the design of efficient electrodes. Inspired by the house/building process, which means electing the right land, it lays a strong foundation and building essential columns for a complex structure. Herein, we report the construction of mul... 相似文献