Water bamboo-derived porous carbons as electrode materials for supercapacitors

2015 ◽  
Vol 39 (5) ◽  
pp. 3859-3864 ◽  
Author(s):  
Jiangfeng Li ◽  
Qingsheng Wu
Keyword(s):  
Activated Carbon ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Porous Carbons ◽  
Rectangular Shape ◽  
Scan Rate ◽  
Excellent Stability

Water bamboo-derived activated carbon materials were synthesized through the activation of KOH. These materials show a rectangular shape at the scan rate of 50 mV s−1. The activated carbon synthesized at a 2 : 1 ratio of KOH shows the most excellent stability in the long-term cycles.

scholarly journals Carbon nanomaterials for supercapacitors: two electrode scheme

2021 ◽  
Vol 340 ◽  
pp. 01035
Author(s):  
Maxim V. Popov ◽  
Alexander G. Bannov ◽  
Stepan I. Yusin
Keyword(s):  
Activated Carbon ◽  
Carbon Nanofibers ◽  
Carbon Nanomaterials ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Expanded Graphite ◽  
Thermally Expanded Graphite ◽  
Rice Hulls ◽  
Texture Characteristics ◽  
Electrodes For Supercapacitors

In this paper, the electrochemical and texture characteristics of electrode materials made of a number of promising carbon materials for supercapacitors were considered. Carbon nanofibers, thermally expanded graphite, and activated carbon derived from rice hulls were used as electrodes for supercapacitors. The paper presents a technique of synthesis of these electrode materials. A comparison of the capacitive characteristics of the electrodes using two-electrode scheme was carried out.

Preparation and Characterization of Microporous Activated Carbon from Raw Anthracite

2015 ◽  
Vol 814 ◽  
pp. 292-297
Author(s):  
Bo Tao Wang
Keyword(s):  
Activated Carbon ◽  
Pharmaceutical Industry ◽  
Chemical Stability ◽  
Chemical Industry ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Adsorption Property ◽  
High Specific Surface Area ◽  
High Mechanical Strength

Activated carbon (AC) is a kind of artificial carbon materials with highly developed pore structure and high specific surface area. As sound adsorption materials, the AC shows excellent adsorption property, good chemical stability, high mechanical strength and easy-to-regeneration characteristics, which makes it a widely application in the fields of chemical industry, environmental protection, food and pharmaceutical industry, electrode materials, and so on [1-3].

scholarly journals A Sensitive Pyrimethanil Sensor Based on Electrospun TiC/C Film

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1531 ◽  
Author(s):  
Ling Sui ◽  
Tingting Wu ◽  
Lijuan Liu ◽  
Honghong Wang ◽  
Qingqing Wang ◽  
...  
Keyword(s):  
Noble Metals ◽  
Electrode Materials ◽  
Transition Metal Carbide ◽  
Metal Carbide ◽  
Long Term Stability ◽  
Adsorption Processes ◽  
Tic Nanoparticles ◽  
Sensing Performance ◽  
Excellent Stability

Titanium carbide (TiC) is a very significant transition metal carbide that displays excellent stability and electrical conductivity. The electrocatalytic activity of TiC is similar to noble metals but is much less expensive. Herein, carbon nanofibers (CNFs)-supported TiC nanoparticles (NPs) film (TiC/C) is prepared by electrospinning and carbothermal processes. Well-dispersed TiC NPs are embedded tightly into the CNFs frameworks. The electrochemical oxidation of pyrimethanil (PMT) at the TiC/C-modified electrode displays enhanced redox properties, and the electrode surface is controlled simultaneously both by diffusion and adsorption processes. When TiC/C is applied for PMT determination, the as-fabricated sensor shows good sensing performance, displaying a wide linear range (0.1–600 μM, R2 = 0.998), low detection limit (33 nM, S/N = 3), and good reproducibility with satisfied anti-interference ability. In addition, TiC/C shows long-term stability and good application in natural samples. The facile synthetic method with good sensing performance makes TiC/C promising as novel electrode materials to fabricate efficient sensors.

scholarly journals sp2–sp3 Hybrid Porous Carbon Materials Applied for Supercapacitors

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5990
Author(s):  
Ji Su Chae ◽  
Won-seop Kang ◽  
Kwang Chul Roh
Keyword(s):  
Activated Carbon ◽  
Amorphous Carbon ◽  
Porous Carbon ◽  
Carbon Nanostructures ◽  
Electrode Materials ◽  
Carbon Materials ◽  
High Electron ◽  
Porous Carbon Materials ◽  
Spherical Carbon ◽  
Synthesis Strategy

Carbon materials have gained considerable attention in recent years due to their superior properties. Activated carbon has been used in supercapacitors due to its density and rapid adsorption capability. The sp2–sp3 hybrid porous carbon materials are synthesized using herringbone-type carbon nanofibers (CNFs) and carbonized spherical phenol resins, with KOH as the activating agent. The morphology of the hybrid porous carbon facilitates the formation of ribbon-like nanosheets from highly activated CNFs wrapped around spherical resin-based activated carbon. The etching and separation of the CNFs produce a thin ribbon-like nanosheet structure; these CNFs simultaneously form new bonds with activated carbon, forming the sp2–sp3 hybrid porous structure. The relatively poor electrical conductivity of amorphous carbon is improved by the 3D conductive network that interconnects the CNF and amorphous carbon without requiring additional conductive material. The composite electrode has high electron conductivity and a large surface area with a specific capacitance of 120 F g−1. Thus, the strategy substantially simplifies the hybrid materials of sp2-hybridized CNFs and sp3-hybridized amorphous spherical carbon and significantly improves the comprehensive electrochemical performance of supercapacitors. The developed synthesis strategy provides important insights into the design and fabrication of carbon nanostructures that can be potentially applied as electrode materials for supercapacitors.

Nitrogen and sulfur self-doped porous carbon from brussel sprouts as electrode materials for high stable supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57464-57472 ◽  
Author(s):  
Jiangfeng Li ◽  
Guangtao Zan ◽  
Qingsheng Wu
Keyword(s):  
Activated Carbon ◽  
Electrode Material ◽  
Porous Carbon ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Rate Capability ◽  
Electrochemical Capacitor ◽  
Good Rate Capability

Brussel sprout-derived activated carbon materials synthesized through the activation of KOH as electrode material for electrochemical capacitor shows a good rate capability.

Enhancing the power generation of Rhodopseudomonas palustris-based MFC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1261-1268
Author(s):  
Shu Otani ◽  
Dang-Trang Nguyen ◽  
Kozo Taguchi
Keyword(s):  
Activated Carbon ◽  
Rhodopseudomonas Palustris ◽  
Ozone Treatment ◽  
Maximum Power Density ◽  
On Demand ◽  
Long Time ◽  
Dry Conditions ◽  
Carbon Sheet ◽  
Uv Ozone

In this study, a portable and disposable paper-based microbial fuel cell (MFC) was fabricated. The MFC was powered by Rhodopseudomonas palustris bacteria (R. palustris). An activated carbon sheet-based anode pre-loaded organic matter (starch) and R. palustris was used. By using starch in the anode, R. palustris-loaded on the anode could be preserved for a long time in dry conditions. The MFC could generate electricity on-demand activated by adding water to the anode. The activated carbon sheet anode was treated by UV-ozone treatment to remove impurities and to improve its hydrophilicity before being loaded with R. palustris. The developed MFC could generate the maximum power density of 0.9 μW/cm2 and could be preserved for long-term usage with little performance degradation (10% after four weeks).

Restoration of cylinder liners for automotive tractors engines in modern conditions

2020 ◽  
pp. 122-133
Author(s):  
Vyacheslav A. Denisov ◽  
Aleksandr Yu. Kostyukov ◽  
Roman N. Zadorozhniy
Keyword(s):  
Adhesion Strength ◽  
Electrode Materials ◽  
Research Purpose ◽  
Laboratory Studies ◽  
Term Operation ◽  
Operational Load ◽  
Operational Tests ◽  
Conducting Research ◽  
Cylinder Liners

One of the most promising technologies for restoring machine parts and cylinder liners is electric spark treatment as the most versatile technology that provides high-quality restoration of worn parts with wear up to 0.5 mm. (Research purpose) The research purpose is in developing a technology for restoring various cylinder liners by means of electric spark processing, selecting optimal modes and electrode materials that allow improving the quality of repair and increasing the post-repair life of the sleeve. (Materials and methods) It was taken into account when conducting research aimed at restoring the geometric parameters of the sleeve, that the coating must have sufficient adhesion strength to the surface of the sleeve under mechanical, thermal loads and long-term operation. Laboratory studies of the adhesion strength of electric spark coatings on the separation (adhesive) and on the cut, as well as tribotechnical studies of interfaces were conducted. Authors have found by analyzing the results of operational tests of restored and new cylinder liners the prospects for using electric spark treatment of worn parts, including diesel engine liners. (Results and discussion) It was shown by laboratory studies of the adhesion strength of electric spark coatings with a 0.2 mm thick BrMKc 3-1 electrode to the working surface of cylinder liners that their separation strength (adhesive) was 20-40 megapascals, and the shear strength (cohesive) was 50-80 megapascals. It was found that this provides the required functional strength of coatings with maximum operational load. The article presents the results of comprehensive research in graphs and tables. (Conclusions) The research conducted in the CCP "Nano-Center" of the FSAC VIM and operational tests in the 2nd bus fleet of Moscow confirmed the principal possibility of effectively restoring cast iron liners (blocks) using the technology of electric spark processing.

Poly(aniline-co-pyrrole)-coated Ni-doped manganese dioxide as electrode materials for supercapacitors

2020 ◽  
Vol 13 (02) ◽  
pp. 2051007
Author(s):  
Jie Dong ◽  
Qinghao Yang ◽  
Qiuli Zhao ◽  
Zhenzhong Hou ◽  
Yue Zhou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Manganese Dioxide ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Cycle Stability ◽  
Mass Ratio ◽  
Scan Rate ◽  
Poly Aniline ◽  
Inorganic And Organic

Electrode materials with a high specific capacitance, outstanding reversibility and excellent cycle stability are constantly pursued for supercapacitors. In this paper, we present an approach to improve the electrochemical performance by combining the advantages of both inorganic and organic. Ni-MnO2/PANi-co-PPy composites are synthesized, with the copolymer of aniline/pyrrole being coated on the surface of Ni-doped manganese dioxide nanospheres. The inorganic–organic composite enables a substantial increase in its specific capacitance and cycle stability. When the mass ratio of Ni-MnO2 to aniline and pyrrole mixed monomer is 1:5, the composite delivers high specific capacitance of 445.49[Formula: see text]F/g at a scan rate of 2[Formula: see text]mV/s and excellent cycle stability of 61.65% retention after 5000 cycles. The results indicate that the Ni-MnO2/PANi-co-PPy composites are promising electrode materials for future supercapacitors application.

Interpenetrating Gels as Conducting/Adhering Matrices Enabling High-Performance Silicon Anodes

2021 ◽  
Author(s):  
Tingting Xia ◽  
Chengfei Xu ◽  
Pengfei Dai ◽  
Xiaoyun Li ◽  
Riming Lin ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Electrochemical Energy Storage ◽  
Active Materials ◽  
Silicon Anodes ◽  
Weak Binding ◽  
Binding Forces

Three-dimensional (3D) conductive polymers are promising conductive matrices for electrode materials toward electrochemical energy storage. However, their fragile nature and weak binding forces with active materials could not guarantee long-term...

Sign in / Sign up

Export Citation Format

Share Document