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Enhance cathodic capacitance to eliminate power overshoot in microbial fuel cells
Springer Science and Business Media LLC - Tập 24 - Trang 1659-1667 - 2020
Dongliang Wang, Jingping Hu, Shaogang Hu, Longsheng Wu, Jikun Xu, Huijie Hou, Jiakuan Yang, Sha Liang, Keke Xiao, Bingchuan Liu
Power overshoot that presents in the power curves of microbial fuel cells (MFCs) is one of the main reasons for the deterioration of MFC performance over the high current region. In this research, the mechanisms of power overshoot were investigated with single-chamber MFCs integrated with carbon cloth anode and Fe/N-doped carbon cathodes possessing varied capacitance properties. It was revealed th...... hiện toàn bộ
Time-varied synthesis of hierarchical ZnO microspheres and their applications in dye-sensitized solar cells
Springer Science and Business Media LLC - Tập 21 - Trang 1797-1804 - 2017
Yogesh Waghadkar, Manish Shinde, Reshma Ballal, Sunit Rane, Suresh Gosavi, Ratna Chauhan
Hierarchically nano-structured ZnO microspheres have been synthesized solvothermally at variable reaction times (6, 12, 36, and 48 h) by using ethylene glycol as a solvent, zinc acetate as precursor, and hexamethylene triamine (HMT) as structure directing agent. The study also focused on the mechanism of time-dependant growth of hierarchical ZnO microspheres and their deployment in dye-sensitized ...... hiện toàn bộ
Electrochemical properties of diphosphonate-bridged palladacycles and their reactivity in arene phosphonation
Springer Science and Business Media LLC - Tập 19 - Trang 2665-2672 - 2015
Tatyana Gryaznova, Yulia Dudkina, Mikhail Khrizanforov, Oleg Sinyashin, Olga Kataeva, Yulia Budnikova
A series of diphosphonate-bridged dipalladacycles [(phpy)Pd(EtO)2P(O)]2, [(bhq)Pd(EtO)2P(O)]2, [(phpz)Pd(EtO)2P(O)]2 (phpy=2-phenylpyridine, bhq=benzo[h]quinoline, phpz=1-phenylpyrazole), which are known to be involved in catalytic C–H phosphonation reactions, was prepared and characterized by NMR spectroscopy and cyclic voltammetry in acetonitrile solutions and in carbon paste electrode. Diphosph...... hiện toàn bộ
Electrochemical determination of traces lead ions using a new nanocomposite of polypyrrole/carbon nanofibers
Springer Science and Business Media LLC - Tập 21 - Trang 3289-3300 - 2017
Larbi Oularbi, Mireille Turmine, Mama El Rhazi
In this paper, a new nanocomposite of polypyrrole (PPy) and carbon nanofibers (CNFs)-modified carbon paste electrode (CPE) has been reported for the determination of traces lead ions (Pb2+). The obtained nanocomposite was fabricated by combining the unique advantages of PPy and CNFs using a very simple approach, which consists on modifying the CPE by the functionalized CNFs and then by the PPy fil...... hiện toàn bộ
Combustion-synthesized sodium manganese (cobalt) oxides as cathodes for sodium ion batteries
Springer Science and Business Media LLC - Tập 17 - Trang 1923-1929 - 2013
Nicolas Bucher, Steffen Hartung, Irina Gocheva, Yan L. Cheah, Madhavi Srinivasan, Harry E. Hoster
We report on the electrochemical properties of layered manganese oxides, with and without cobalt substituents, as cathodes in sodium ion batteries. We fabricated sub-micrometre-sized particles of Na0.7MnO2 + z and Na0.7Co0.11Mn0.89O2 + z via combustion synthesis. X-ray diffraction revealed the same layered hexagonal P2-type bronze structure with high crystallinity...... hiện toàn bộ
Nanotopography and electrochemical impedance spectroscopy of palladium deposited on different electrode materials
Springer Science and Business Media LLC - Tập 8 - Trang 308-315 - 2003
Henryk Scholl, Tadeusz Blaszczyk, Andrzej Leniart, Krzysztof Polanski
The objective of this work was to describe the characteristics of chemically and electrochemically deposited Pd surface layers on HOPG and polycrystalline gold electrode, using in situ ECSTM and EIS measurements, and SEM-EDX element analysis. Pd surface layers were deposited, in successive voltammetric cycles, and anodically dissolved in 0.01 M HCl+0.01 M (NH4)2PdCl4 aqueous electrolyte. Both of t...... hiện toàn bộ
Fundamental aspects of HCOOH oxidation at platinum single crystal surfaces with basal orientations and modified by irreversibly adsorbed adatoms
Springer Science and Business Media LLC - Tập 18 - Trang 1181-1193 - 2013
A. Boronat-González, E. Herrero, J. M. Feliu
Oxidation of formic acid at Pt(hkl) electrodes with basal orientations and modified by irreversibly adsorbed adatoms is revisited. It was shown that the adatoms of the nitrogen group enhance the electrocatalytic activity through long-range electronic effects in the case of Pt(111) substrates or through shorter third-body effects when adsorbed at Pt(100) electrodes. In both cases, it appears that f...... hiện toàn bộ
Electrochemical and microscopic studies of surface-confined DNA
Springer Science and Business Media LLC - Tập 11 - Trang 496-504 - 2006
Xiaoquan Lu, Yan Zhang, Min Zhang, Yina Chen, Jingwan Kang
We have studied the micropatterning and characterization of the organic monolayers using cyclic voltammetry (CV), scanning electrochemical microscopy (SECM), atom force microscopy, and AC impedance, and have determined the electrochemical parameters, i.e., the apparent reaction rate constant (K f) and the coverage of the electrode surface (θ). CV and SECM experiments demons...... hiện toàn bộ
Sonocatalytic degradation of methylene blue using spindle shaped cerium oxide nanoparticles
Springer Science and Business Media LLC - Tập 27 - Trang 2005-2015 - 2023
Sandhya Gadge, Ashif Tamboli, Manish Shinde, Hassan Fouad, Chiaki Terashima, Ratna Chauhan, Suresh Gosavi
The industrial revolution has raised major concern of environmental pollution, due to excess release of hazardous chemical, dyes, etc. into water bodies. The present crises of water have attracted considerable attention of scientific drive on development of new technologies on recovery and water purification. Sonochemistry with zero secondary pollutants has been considered as a potential, and gree...... hiện toàn bộ
Fabrication of metal-supported solid oxide fuel cells by combining aerosol deposition and magnetron sputtering techniques
Springer Science and Business Media LLC -
I.S. Erilin, М. Н. Левин, И. Н. Бурмистров, D.V. Yalovenko, Egor Smolyanskiy, A. A. Solovyev, С. И. Бредихин
Tổng số: 4,490   
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