Rechargeable aqueous zinc–iodine batteries: pore confining mechanism and flexible device application

2018 ◽  
Vol 54 (50) ◽  
pp. 6792-6795 ◽  
Author(s):  
Yixin Li ◽  
Luojia Liu ◽  
Haixia Li ◽  
Fangyi Cheng ◽  
Jun Chen
Keyword(s):  
Superior Performance ◽  
Carbon Cloth ◽  
Device Application ◽  
Flexible Device

Confining iodine in the micropores of carbon cloth suppresses unfavorable triiodide intermediates and enables superior performance of assembled flexible zinc–iodine batteries.

Photochemical synthesis and device application of acene–phenacene hybrid molecules, dibenzo[n]phenacenes (n = 5–7)

2021 ◽  
Author(s):  
Yanting Zhang ◽  
Ritsuko Eguchi ◽  
Shino Hamao ◽  
Kenta Goto ◽  
Fumito Tani ◽  
...  
Keyword(s):  
Photochemical Synthesis ◽  
Superior Performance ◽  
Device Application ◽  
Active Layers ◽  
Hybrid Molecules

Dibenzo[n]phenacenes (DBnP, n = 5–7) were applied to the active layers of p-channel FETs and their effective mobilities were evaluated to demonstrate that C2h-symmetrical DB6P showed superior performance to the C2v-symmetrical homologues.

Hydrothermally reduced Graphene Oxide coated Carbon Cloth for Flexible Supercapacitors

2021 ◽  
pp. 1-24
Author(s):  
Subhakaran Singh Rajaputra ◽  
Nagalakshmi P ◽  
Anjaneyulu Yerramilli ◽  
Naga Mahesh K
Keyword(s):  
Surface Area ◽  
Hydrothermal Treatment ◽  
Current Density ◽  
Evaluation Studies ◽  
Superior Performance ◽  
Bet Surface Area ◽  
Carbon Cloth ◽  
Angle Measurements ◽  
Physico Chemical ◽  
Treated Carbon

Abstract Hydrothermally synthesized Graphene (HRG) was tested for its supercapacitive behavior using nickel (Ni) and hydrothermally treated carbon cloth as current collectors, respectively. Performance evaluation studies were carried out in an in-house fabricated SS cell. Commercially obtained untreated carbon cloth (CCUn) was exfoliated via oxidation (CCOx) followed by hydrothermal treatment to obtain a reduced carbon cloth (CCHy). The Physico-chemical and electrochemical properties of carbon cloth by oxidative exfoliation and hydrothermal treatment have been studied using SEM, XRD, FTIR, BET surface area, Contact angle measurements, cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and EIS. HRG coated on the CCHy (HRG-CCHy) had shown superior performance and endurance compared to HRG coated on Ni strip (HRG-Ni), with distinguishable specific capacitances (Cs) of 170 and 134 F g-1 at 0.5 A g-1 current density, respectively. At a higher 10 A g-1 current density, HRG-CCHy, and HRG-Ni have displayed distinctive specific capacitances of 120 and 80 F g-1, respectively, indicating a comparative decline in the performance of HRG-Ni with respect to HRG-CCHy. Endurance study performed for 5000 cycles at 2 A g-1, resulted in HRG-CCHy and HRG-Ni, retaining 88% and 81% of their initial specific capacitances. At 1 kW kg-1 of power density, HRG-CCHy displayed a 5.5 Wh kg-1 of energy density. The electrochemical performance of HRG-CCHy may be attributed to exceptional properties like high wettability, low impedance, high pore volume, and specific surface area.

Large-Scale Graphene Micropatterns via Self-Assembly-Mediated Process for Flexible Device Application

Nano Letters ◽  
2012 ◽  
Vol 12 (2) ◽  
pp. 743-748 ◽  
Author(s):  
TaeYoung Kim ◽  
Hyeongkeun Kim ◽  
Soon Woo Kwon ◽  
Yena Kim ◽  
Won Kyu Park ◽  
...  
Keyword(s):  
Self Assembly ◽  
Large Scale ◽  
Device Application ◽  
Flexible Device

scholarly journals Characterization of Carbon Nanotube/Graphene on Carbon Cloth as an Electrode for Air-Cathode Microbial Fuel Cells

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Hung-Yin Tsai ◽  
Wei-Hsuan Hsu ◽  
Ying-Chen Huang
Keyword(s):  
Fuel Cells ◽  
Carbon Nanotube ◽  
Microbial Fuel Cells ◽  
Electrode Materials ◽  
Modified Electrodes ◽  
Internal Resistance ◽  
Superior Performance ◽  
Carbon Cloth ◽  
Air Cathode ◽  
Microbial Decomposition

Microbial fuel cells (MFCs), which can generate low-pollution power through microbial decomposition, have become a potentially important technology with applications in environmental protection and energy recovery. The electrode materials used in MFCs are crucial determinants of their capacity to generate electricity. In this study, we investigate the performance of using carbon nanotube (CNT) and graphene-modified carbon-cloth electrodes in a single-chamber MFC. We develop a process for fabricating carbon-based modified electrodes andEscherichia coliHB101 in an air-cathode MFC. The results show that the power density of MFCs can be improved by applying a coat of either graphene or CNT to a carbon-cloth electrode, and the graphene-modified electrode exhibits superior performance. In addition, the enhanced performance of anodic modification by CNT or graphene was greater than that of cathodic modification. The internal resistance decreased from 377 kΩ for normal electrodes to 5.6 kΩ for both electrodes modified by graphene with a cathodic catalyst. Using the modified electrodes in air-cathode MFCs can enhance the performance of power generation and reduce the associated costs.

Hydrogen Defect Passivation of Silicon Transistor on Plastic for High Performance Flexible Device Application

2010 ◽  
Vol 13 (3) ◽  
pp. H80 ◽  
Author(s):  
Musarrat Hasan ◽  
Sun Jin Yun ◽  
Jae Bon Koo ◽  
Sang Hee Ko Park ◽  
Yong Hae Kim ◽  
...  
Keyword(s):  
High Performance ◽  
Device Application ◽  
Flexible Device ◽  
Defect Passivation ◽  
Silicon Transistor

scholarly journals Fabrication of C/Co-FeS2/CoS2 with Highly Efficient Hydrogen Evolution Reaction

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 556 ◽  
Author(s):  
Yuan Gao ◽  
Ka Wang ◽  
Haizeng Song ◽  
Han Wu ◽  
Shancheng Yan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Hydrothermal Process ◽  
Carbon Doping ◽  
Superior Performance ◽  
Carbon Cloth ◽  
Carbon Doped ◽  
Surface Electronic Structure ◽  
Efficient Alternative ◽  
A Current

The mainstream strategy for designing hydrogen electrocatalysts is to adjust their surface electronic structure; however, the conductivity of the electrocatalyst and the synergy with its substrate are still challenges to overcome. In this work, we report a carbon-doped Co-FeS2/CoS2 (C/Co-FeS2/CoS2) electrode, prepared via a hydrothermal process with carbon cloth (CC) as the substrate and carbon doping. The C/Co-FeS2/CoS2 electrode shows excellent catalytic activity in the hydrogen evolution reaction (HER) with an overpotential of 88 mV at a current density of −10 mA∙cm−2 in 0.5 M H2SO4 solution. The Tafel slope is 66 mV∙dec−1. Such superior performance is attributed to the high electrical conductivity of the electrocatalyst and its synergy with the substrate. Our study provides an efficient alternative in the field of electrocatalysis.

scholarly journals Three-dimensional graphene/Pt nanoparticle composites as freestanding anode for enhancing performance of microbial fuel cells

2015 ◽  
Vol 1 (10) ◽  
pp. e1500372 ◽  
Author(s):  
Shenlong Zhao ◽  
Yuchen Li ◽  
Huajie Yin ◽  
Zhouzhou Liu ◽  
Enxiao Luan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Three Dimensional ◽  
Shewanella Oneidensis ◽  
Superior Performance ◽  
Carbon Cloth ◽  
The Real ◽  
3D Graphene ◽  
Real Application

Microbial fuel cells (MFCs) are able to directly convert about 50 to 90% of energy from oxidation of organic matters in waste to electricity and have great potential application in broad fields such as wastewater treatment. Unfortunately, the power density of the MFCs at present is significantly lower than the theoretical value because of technical limitations including low bacteria loading capacity and difficult electron transfer between the bacteria and the electrode. We reported a three-dimensional (3D) graphene aerogel (GA) decorated with platinum nanoparticles (Pt NPs) as an efficient freestanding anode for MFCs. The 3D GA/Pt–based anode has a continuous 3D macroporous structure that is favorable for microorganism immobilization and efficient electrolyte transport. Moreover, GA scaffold is homogenously decorated with Pt NPs to further enhance extracellular charge transfer between the bacteria and the anode. The MFCs constructed with 3D GA/Pt–based anode generate a remarkable maximum power density of 1460 mW/m2, 5.3 times higher than that based on carbon cloth (273 mW/m2). It deserves to be stressed that 1460 mW/m2 obtained from the GA/Pt anode shows the superior performance among all the reported MFCs inoculated with Shewanella oneidensis MR-1. Moreover, as a demonstration of the real application, the MFC equipped with the freestanding GA/Pt anode has been successfully applied in driving timer for the first time, which opens the avenue toward the real application of the MFCs.

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