Journal•ISSN: 2162-8726
ECS Electrochemistry Letters
Electrochemical Society
About: ECS Electrochemistry Letters is an academic journal. The journal publishes majorly in the area(s): Electrolyte & Electrode. It has an ISSN identifier of 2162-8726. Over the lifetime, 377 publications have been published receiving 5556 citations.
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TL;DR: In this article, a copper rubeanate metal organic framework (CR-MOF) was used to improve the catalytic activity of electrochemical reduction of CO2 due to its characteristics of electronic conductivity, proton conductivity and dispersed reaction sites, and nanopores.
Abstract: We synthesized a copper rubeanate metal organic framework (CR-MOF) which has the potential to improve the catalytic activity of electrochemical reduction of CO2 due to its characteristics of electronic conductivity, proton conductivity, dispersed reaction sites, and nanopores. Synthesized CR-MOF particles were dropped on carbon paper (CP) to form a working electrode. The onset potential for CO2 reduction of a CR-MOF electrode was about 0.2 V more positive than that observed on a Cu metal electrode in an aqueous electrolyte solution. Our analysis of the reduction products during potentiostatic electrolysis showed formic acid (HCOOH) to be virtually the only CO2 reduction product on a CR-MOF electrode, whereas a Cu metal electrode generates a range of products. The quantity of products from the CR-MOF electrode was markedly greater (13-fold at −1.2 V vs. SHE) than that of a Cu metal electrode. Its stability was also confirmed.
167 citations
TL;DR: In this article, the negative and positive electrodes of vanadium redox batteries (VRBs) were resolved using a dynamic hydrogen electrode in an operating battery cell, and the relative rates of reaction were a surprise since it might be expected that the V3/2+ redox reaction is a simple outer-sphere electron transfer.
Abstract: We report results of polarization measurements resolved for the negative and positive electrodes of vanadium redox batteries (VRBs) using a dynamic hydrogen electrode in an operating battery cell. Electrochemical experiments with symmetric electrolyte feeds were also performed. Greater kinetic polarization is observed at the negative (V3/2+) electrode compared to the positive electrode (V5/4+), in contrast with previously reported ex situ measurements. For the positive electrode, the polarization in the low-current regime was modest and was not kinetically controlled. The relative rates of reaction are a surprise since it might be expected that the V3/2+ redox reaction is a simple outer-sphere electron transfer.
145 citations
TL;DR: In this article, the authors proposed a power source technology based on the physical chemistry of materials group at Sandia National Laboratory and a power sources technology group at Oak Ridge National Laboratory.
Abstract: aPhysical Chemistry of Materials Group, Emissions and Catalysis Research Group, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA bPower Sources Technology Group, Sandia National Laboratory, Albuquerque, New Mexico 87185, USA cDepartment of Chemical and Biomolecular Engineering, Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
128 citations
TL;DR: The experimental approach has broad applicability to other electrochemical energy storage technologies where mass transport limitations are present at low temperatures, particularly Li-air, Li-S, and Zn-air batteries as mentioned in this paper.
Abstract: C short-circuit most rapidly due in part to a favorable morphology at this temperature. The experimentalapproach has broad applicability to other electrochemical energy storage technologies where mass transport limitations are presentat low temperatures, particularly Li-air, Li-S, and Zn-air batteries.© The Author(s) 2014. Published by ECS. This is an open access article distributed under the terms of the Creative CommonsAttribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/),whichpermitsnon-commercialreuse,distribution,andreproductioninanymedium,providedtheoriginalworkisnotchangedinanyway and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. [DOI: 10.1149/2.0041502eel]All rights reserved.Manuscript submitted October 29, 2014; revised manuscript received November 24, 2014. Published December 11, 2014.
115 citations
TL;DR: In this paper, the corrosion behavior of aluminum current collectors at high potentials in the presence of the electrolyte salt LiN(SO2CF3)2 and various electrolyte solvents is studied.
Abstract: The corrosion behavior of aluminum current collectors at high potentials in the presence of the electrolyte salt LiN(SO2CF3)2 and various electrolyte solvents is studied. The corrosion is investigated, by detection of the actual weight loss of the current collector. Collector corrosion depends on the chemistry of the electrolyte solvent, with strong corrosion in the presence of carbonates and lactones and minimal corrosion in the presence of nitriles. It is demonstrated that not only a charge consuming aluminum dissolution takes place and possible explanations are discussed.
113 citations