Optimization of Carbon‐ and Binder‐Free Au Nanoparticle‐Coated Ni Nanowire Electrodes for Lithium‐Oxygen Batteries. Issue 3 (22nd September 2014)

• Record Type: Journal Article
• Authors: Kim, Sun Tai; Choi, Nam‐Soon; Park, Soojin; Cho, Jaephil
• Is Part Of: Advanced energy materials. Volume 5:Issue 3(2015:Feb.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2014-09-22
• Subjects: Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201401030
• Languages: English
• ISSNs: 1614-6832

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A Au nanoparticle‐coated Ni nanowire substrate without binder or carbon is used as the electrode (denoted as the Au/Ni electrode) for Li‐oxygen (Li‐O₂) batteries. A minimal amount of Au nanoparticles with sizes of &lt;30 nm on a Ni nanowire substrate are coated using a simple electrodeposition method to the extent that maximum capacity can be utilized. This optimized, one body, Au/Ni electrode shows high capacities of 921 mAh g⁻¹_Au, 591 mAh g⁻¹_Au, and 359 mAh g⁻¹_Au, which are obtained at currents of 300 mAg⁻¹_Au, 500 mAg⁻¹_Au, and 1000 mAg⁻¹_Au respectively. More importantly, the Au/Ni electrode exhibits excellent cycle stability over 200 cycles.</p> </abstract>