Silver nanowires as catalytic cathodes for stabilizing lithium-oxygen batteries

Won Jin Kwak; Hun Gi Jung; Seon Hwa Lee; Jin Bum Park; Doron Aurbach; Yang Kook Sun

doi:10.1016/j.jpowsour.2016.02.021

Silver nanowires as catalytic cathodes for stabilizing lithium-oxygen batteries

Won Jin Kwak, Hun Gi Jung, Seon Hwa Lee, Jin Bum Park, Doron Aurbach, Yang Kook Sun

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Silver nanowires have been investigated as a catalytic cathode material for lithium-oxygen batteries. Their high aspect ratio contributes to the formation of a corn-shaped layer structure of the poorly crystalline lithium peroxide (Li₂O₂) nanoparticles produced by oxygen reduction in poly-ether based electrolyte solutions. The nanowire morphology seems to provide the necessary large contact area and facile electron supply for a very effective oxygen reduction reaction. The unique morphology and structure of the Li₂O₂ deposits and the catalytic nature of the silver nano-wires promote decomposition of Li₂O₂ at low potentials (below 3.4 V) upon the oxygen evolution. This situation avoids decomposition of the solution species and oxidation of the electrodes during the anodic (charge) reactions, leading to high electrical efficiently of lithium-oxygen batteries.

Original language	English
Pages (from-to)	49-56
Number of pages	8
Journal	Journal of Power Sources
Volume	311
DOIs	https://doi.org/10.1016/j.jpowsour.2016.02.021
State	Published - 15 Apr 2016

Bibliographical note

Funding Information:
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 .

Publisher Copyright:
© 2016 Elsevier B.V.All rights reserved.

Keywords

Catalyst
Lithium peroxide
Lithium-oxygen battery
Oxygen evolution reaction
Silver nanowires

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2016.02.021

Cite this

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title = "Silver nanowires as catalytic cathodes for stabilizing lithium-oxygen batteries",

abstract = "Silver nanowires have been investigated as a catalytic cathode material for lithium-oxygen batteries. Their high aspect ratio contributes to the formation of a corn-shaped layer structure of the poorly crystalline lithium peroxide (Li2O2) nanoparticles produced by oxygen reduction in poly-ether based electrolyte solutions. The nanowire morphology seems to provide the necessary large contact area and facile electron supply for a very effective oxygen reduction reaction. The unique morphology and structure of the Li2O2 deposits and the catalytic nature of the silver nano-wires promote decomposition of Li2O2 at low potentials (below 3.4 V) upon the oxygen evolution. This situation avoids decomposition of the solution species and oxidation of the electrodes during the anodic (charge) reactions, leading to high electrical efficiently of lithium-oxygen batteries.",

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AU - Kwak, Won Jin

AU - Jung, Hun Gi

AU - Lee, Seon Hwa

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AU - Aurbach, Doron

AU - Sun, Yang Kook

PY - 2016/4/15

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AB - Silver nanowires have been investigated as a catalytic cathode material for lithium-oxygen batteries. Their high aspect ratio contributes to the formation of a corn-shaped layer structure of the poorly crystalline lithium peroxide (Li2O2) nanoparticles produced by oxygen reduction in poly-ether based electrolyte solutions. The nanowire morphology seems to provide the necessary large contact area and facile electron supply for a very effective oxygen reduction reaction. The unique morphology and structure of the Li2O2 deposits and the catalytic nature of the silver nano-wires promote decomposition of Li2O2 at low potentials (below 3.4 V) upon the oxygen evolution. This situation avoids decomposition of the solution species and oxidation of the electrodes during the anodic (charge) reactions, leading to high electrical efficiently of lithium-oxygen batteries.

KW - Catalyst

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KW - Lithium-oxygen battery

KW - Oxygen evolution reaction

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Silver nanowires as catalytic cathodes for stabilizing lithium-oxygen batteries

Abstract

Bibliographical note

Keywords

UN SDGs

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