Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 선양국 | - |
dc.date.accessioned | 2018-08-27T00:53:04Z | - |
dc.date.available | 2018-08-27T00:53:04Z | - |
dc.date.issued | 2016-07 | - |
dc.identifier.citation | ENERGY & ENVIRONMENTAL SCIENCE (2016), v. 9, NO. 7, Page. 2334-2345 | en_US |
dc.identifier.issn | 1754-5706 | - |
dc.identifier.issn | 1754-5692 | - |
dc.identifier.uri | http://pubs.rsc.org/en/Content/ArticleLanding/2016/EE/C6EE00700G#!divAbstract | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/74519 | - |
dc.description.abstract | After many years of successful and disappointing results, the field of Li–O2 research seems to have reached an equilibrium state. The extensive knowledge that has accrued through advanced analytical studies enables us to delineate the weaknesses of the Li–O2 battery. It is now clear that the instability of the cell components toward extreme conditions existing during cell operation leads to early cell failure as well. One serious challenge is the high oxidation potential applied during the charge process. Redox-mediators may reduce the over-potential and, therefore, improve the efficiency and cyclability of Li–O2 cells. Their use in Li–O2 cells is mandatory. We have previously shown that LiI can indeed behave in such a manner; however, it also promotes the formation of side products during cell operation. We have, therefore, embarked on a comprehensive study of lithium halide salts as electrolytes for use in Li–O2 cells. We examine herein the effect of other components in the cell, such as solvents and contaminants, on the lithium halide salt activity. Based on the electrochemical behavior and the identity of the final cell products under various conditions, we can glean substantial information regarding the detailed operation mechanisms for each specific case. We have concluded that low concentration of LiBr in diglyme solution can improve the cell performance with fewer side effects than LiI. With LiBr, only the desired Li2O2 is formed during discharge. During charge, the bromine redox couple (Br−/Br3−) can reduce the oxidation potential to only 3.5 V. Higher efficiency and better cyclability of cells containing LiBr demonstrate that the electrolyte solution is the key to a successful Li–O2 battery. | en_US |
dc.description.sponsorship | This work was supported by the Human Resources Development program (No. 20154010200840) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government Ministry of Trade, Industry and Energy, and also supported by the Global Frontier R&D Program (2013M3A6B1078875) on Center for Hybrid Interface Materials (HIM) funded by the Ministry of Science, ICT & Future Planning. Partial support for this work was obtained from the ISF, Israel Science Foundation, in the framework of the INREP project. AAF thanks the Israel Science Foundation (ISF, Grant no. 1469/13) as well as the Ethel and David Resnick Chair in Active Oxygen Chemistry for their kind and generous support. The authors thank very much Professor Linda Nazar and Professor Jurgen Janek for the fruitful discussions. | en_US |
dc.language.iso | en | en_US |
dc.publisher | ROYAL SOC CHEMISTRY | en_US |
dc.subject | LITHIUM-OXYGEN BATTERIES | en_US |
dc.subject | EFFICIENT ELECTROCATALYST | en_US |
dc.subject | HYDROGEN-PEROXIDE | en_US |
dc.subject | CARBON CATHODE | en_US |
dc.subject | AIR BATTERIES | en_US |
dc.subject | DISCHARGE | en_US |
dc.subject | CATALYST | en_US |
dc.subject | ELECTROCHEMISTRY | en_US |
dc.subject | DECOMPOSITION | en_US |
dc.subject | SPECTROSCOPY | en_US |
dc.title | Li-O-2 cells with LiBr as an electrolyte and a redox mediator | en_US |
dc.type | Article | en_US |
dc.relation.no | 7 | - |
dc.relation.volume | 9 | - |
dc.identifier.doi | 10.1039/c6ee00700g | - |
dc.relation.page | 2334-2345 | - |
dc.relation.journal | ENERGY & ENVIRONMENTAL SCIENCE | - |
dc.contributor.googleauthor | Kwak, Won-Jin | - |
dc.contributor.googleauthor | Hirshberg, Daniel | - |
dc.contributor.googleauthor | Sharon, Daniel | - |
dc.contributor.googleauthor | Afri, Michal | - |
dc.contributor.googleauthor | Frimer, Aryeh A. | - |
dc.contributor.googleauthor | Jung, Hun-Gi | - |
dc.contributor.googleauthor | Aurbach, Doron | - |
dc.contributor.googleauthor | Sun, Yang-Kook | - |
dc.relation.code | 2016002830 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ENERGY ENGINEERING | - |
dc.identifier.pid | yksun | - |
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