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Kim, Jae-Kwang
YK Research
Research Interests
  • Organic rechargeable batteries
  • Advanced Functional Materials
  • Polymer electrolyte, Lonic liquid, Sodium Batteries
  • New Energy Conversion and Storage

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Rechargeable Seawater Battery and Its Electrochemical Mechanism

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Title
Rechargeable Seawater Battery and Its Electrochemical Mechanism
Author
Kim, Jae-KwangLee, EungjeKim, HyojinJohnson, ChristopherCho, JaephilKim, Youngsik
Issue Date
2015-03
Publisher
WILEY-V C H VERLAG GMBH
Citation
CHEMELECTROCHEM, v.2, no.3, pp.328 - 332
Abstract
Herein, we explore the electrochemical mechanism of a novel rechargeable seawater battery system that uses seawater as the cathode material. Sodium is harvested from seawater while charging the battery, and the harvested sodium is discharged with oxygen dissolved in the seawater, functioning as oxidants to produce electricity. The seawater provides both anode (Na metal) and cathode (O-2) materials for the proposed battery. Based on the discharge voltage (-2.9 V) with participation of O-2 and the charge voltage (similar to 4.1 V) with Cl-2 evolution during the first cycle, a voltage efficiency of about 73% is obtained. If the seawater battery is constructed using hard carbon as the anode and a Na super ion conductor as the solid electrolyte, a strong cycle performance of 84% is observed after 40 cycles
URI
https://scholarworks.unist.ac.kr/handle/201301/11811
URL
http://onlinelibrary.wiley.com/doi/10.1002/celc.201402344/abstract
DOI
10.1002/celc.201402344
ISSN
2196-0216
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ECHE_Journal Papers
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