نتایج جستجو برای: anode potential

تعداد نتایج: 1077385  

1997
J. E. Foster A. D. Gallimore

A novel scheme that employs the use of an auxiliary discharge has been shown to reduce markedly anode sheath potentials in a transverse discharge. An 8.8 A low-pressure argon discharge in the presence of a transverse magnetic field was used as the plasma source in this study. In such discharges, the transverse flux that is collected by the anode is severely limited due to marked reductions in t...

Journal: :Nano letters 2011
Xing Xie Liangbing Hu Mauro Pasta George F Wells Desheng Kong Craig S Criddle Yi Cui

Microbial fuel cells (MFCs) harness the metabolism of microorganisms, converting chemical energy into electrical energy. Anode performance is an important factor limiting the power density of MFCs for practical application. Improving the anode design is thus important for enhancing the MFC performance, but only a little development has been reported. Here, we describe a biocompatible, highly co...

Journal: :Physical chemistry chemical physics : PCCP 2014
Chunhua Feng Zhisheng Lv Xiaoshuang Yang Chaohai Wei

Extensive efforts have been devoted to improve the anode performance of a microbial fuel cell (MFC) by using modified carbon-based anode materials, but most of them did not recognize that the power performance measured by the commonly-used varying circuit resistance (VCR) or linear sweep voltammetry (LSV) method was overestimated due to the effect of anode capacitance. Here, we examined and com...

2001
Timothy S. Fisher D. G. Walker Robert A. Weller

This paper considers the effect of anode heating from energetic electrons produced by field emission. Large electric fields accelerate emitted electrons as they traverse the vacuum gap toward the anode. Electron energy is transferred to the anode by collisions with the lattice. The nonequilibrium transfer of electron kinetic energy to anode thermal energy is examined quantitatively. Results dem...

Journal: :Nano letters 2013
Jingshan Luo Jilei Liu Zhiyuan Zeng Chi Fan Ng Lingjie Ma Hua Zhang Jianyi Lin Zexiang Shen Hong Jin Fan

Fe3O4 has long been regarded as a promising anode material for lithium ion battery due to its high theoretical capacity, earth abundance, low cost, and nontoxic properties. However, up to now no effective and scalable method has been realized to overcome the bottleneck of poor cyclability and low rate capability. In this article, we report a bottom-up strategy assisted by atomic layer depositio...

Journal: :ACS nano 2011
Piotr Matyba Hisato Yamaguchi Manish Chhowalla Nathaniel D Robinson Ludvig Edman

We report flexible and metal-free light-emitting electrochemical cells (LECs) using exclusively solution-processed organic materials and illustrate interesting design opportunities offered by such conformable devices with transparent electrodes. Flexible LEC devices based on chemically derived graphene (CDG) as the cathode and poly(3,4-ethylenedioxythiophene) mixed with poly(styrenesulfonate) a...

2014
Pooja M. Panchmatia A. Robert Armstrong Peter G. Bruce M. Saiful Islam

Layered Li1+xV1 xO2 has attracted recent interest as a potential low voltage and high energy density anode material for lithium-ion batteries. A greater understanding of the lithium-ion transport mechanisms is important in optimising such oxide anodes. Here, stoichiometric LiVO2 and Li-rich Li1.07V0.93O2 are investigated using atomistic modelling techniques. Lithium-ion migration is not found i...

2015
Mohsen Vaez

Current reliance on fossil fuels is unsustainable due to pollution and finite supplies. Microbial cell factories serve as promising alternatives renewable energy resources. Microorganisms generate electricity in their metabolism; act as catalysts for converting the chemical energy into electricity. In Microbial Fuel Cell (MFC), electrons provided by microorganisms flow through an electrical ext...

Journal: :Biophysical journal 1995
J P Wikswo S F Lin R A Abbas

Traditional cable analyses cannot explain complex patterns of excitation in cardiac tissue with unipolar, extracellular anodal, or cathodal stimuli. Epifluorescence imaging of the transmembrane potential during and after stimulation of both refractory and excitable tissue shows distinctive regions of simultaneous depolarization and hyperpolarization during stimulation that act as virtual cathod...

Journal: :Biosensors & bioelectronics 2009
Feng Zhao Nelli Rahunen John R Varcoe Alexander J Roberts Claudio Avignone-Rossa Alfred E Thumser Robert C T Slade

A microbial fuel cell (MFC) has been developed for removal of sulfur-based pollutants and can be used for simultaneous wastewater treatment and electricity generation. This fuel cell uses an activated carbon cloth+carbon fibre veil composite anode, air-breathing dual cathodes and the sulfate-reducing species Desulfovibrio desulfuricans. 1.16gdm(-3) sulfite and 0.97gdm(-3) thiosulfate were remov...

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