نتایج جستجو برای: anode potential

تعداد نتایج: 1077385  

2017
Pau Rodenas Fangqi Zhu Annemiek Ter Heijne Tom Sleutels Michel Saakes Cees Buisman

Background Bioelectrochemical systems (BESs) are capable of recovery of metals at a cathode through oxidation of organic substrate at an anode. Recently, also hydrogen gas was used as an electron donor for recovery of copper in BESs. Oxidation of hydrogen gas produced a current density of 0.8 A m-2 and combined with Cu2+ reduction at the cathode, produced 0.25 W m-2. The main factor limiting cu...

Journal: :CoRR 2016
Haim Grebel

Electronic logic gates are the basic building blocks of every computing and micro controlling system. Logic gates are made of switches, such as diodes and transistors. Ion-selective, ionic switches may emulate electronic switches [1-8]. If we ever want to create artificial bio-chemical circuitry, then we need to move a step further towards ion-logic circuitry. Here we demonstrate ion XOR and OR...

Journal: :Advanced materials 2013
Ke Sun Teng-Sing Wei Bok Yeop Ahn Jung Yoon Seo Shen J Dillon Jennifer A Lewis

3D interdigitated microbattery architectures (3D-IMA) are fabricated by printing concentrated lithium oxide-based inks. The microbatteries are composed of interdigitated, high-aspect ratio cathode and anode structures. Our 3D-IMA, which exhibit high areal energy and power densities, may find potential application in autonomously powered microdevices.

Journal: :Chemical communications 2013
Wei-Ta Chen Yin-Kai Lin Ting-Ting Yang Ying-Chih Pu Yung-Jung Hsu

Au/ZnS core/shell nanocrystals with controllable shell thicknesses were synthesized using a cysteine-assisted hydrothermal method. Incorporating Au/ZnS nanocrystals into the traditional Pt-catalyzed half-cell reaction led to a 43.3% increase in methanol oxidation current under light illumination, demonstrating their promising potential for metal/semiconductor hybrid nanocrystals as the anode ph...

Journal: :Chemical communications 2011
Zhiyu Wang Deyan Luan Srinivasan Madhavi Chang Ming Li Xiong Wen David Lou

Polycrystalline α-Fe(2)O(3) nanotubes with thin walls have been synthesized by one-step template-engaged precipitation of Fe(OH)(x) followed by thermal annealing. In virtue of the unique structural features, these α-Fe(2)O(3) nanotubes exhibit superior lithium storage capabilities with exceptional high-rate capacity retention as a potential anode material for lithium-ion batteries.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this research we have studied the effect of some transition-metals (cu, ag and au) substitutions on two-electron reduction potential of flavins by application of dft method. all geometries have been optimized at blyp level of theory and “6-31+g** + lanl2dz” mixed basis set. the frequency job at the same method and basis sets has been performed to obtain gibbs free energy of compounds. it h...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
mostafa alizadeh esmail ghahramani mansur zarrabi sara hashemi

in this study, removal of methylene blue by electro-coagulation method using aluminum and iron electrodes was investigated. the influence of the operating parameters such as contact time, current density, anode type, inter-electrodes distance, initial and final ph and energy consumption rate was determined. dye removal was increased with increases in solution ph, current density and contact tim...

2008
Qi Zhang Ralph E. White

The low rate (C/33) discharge data obtained from a calendar life study were numerically analyzed with a single particle model. The simulation howed that the stoichiometric window for the cathode shrank with capacity fade. The change of the stoichiometric window for the anode was ore complicated. The aged anode became less charged when the capacity fade was caused mostly by the loss of cyclable ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2004
mahmoud abdollahy seid ziadin shafaei

the recovery process of selenium from iranian sar-cheshmeh copper anode slimes employing hydrometallurgical methods has been investigated. the copper anode slimes are made up of those components of  the anodes, which are not soluble in the electrolyte. they contain varying quantities of precious metals like gold, silver, selenium and tellurium. they are being extracted as a by product in the co...

Journal: :Nano letters 2016
Jinyun Liu Xi Chen Jinwoo Kim Qiye Zheng Hailong Ning Pengcheng Sun Xingjiu Huang Jinhuai Liu Junjie Niu Paul V Braun

High volumetric energy density secondary batteries are important for many applications, which has led to considerable efforts to replace the low volumetric capacity graphite-based anode common to most Li-ion batteries with a higher energy density anode. Because most high capacity anode materials expand significantly during charging, such anodes must contain sufficient porosity in the discharged...

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