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- W2015906086 abstract "This study describes the preparation and analysis of laser micro-structured nickel metal electrodes for application as a cathode material in micro-batteries based on the nickel oxyhydroxide chemistry. Using ultra-short pulse length lasers (picoseconds to femtoseconds); surface micro-structures in the form of ripples are rapidly generated at the surface of nickel metal cathodes. These ripple micro-structures, with a periodic spacing approximately equal to the wavelength of laser radiation used, are more commonly referred to as laser-induced periodic plasmonic structures (LIPPS). The electrochemical activity of the LIPPS nickel metal cathodes is investigated in aqueous KOH using cyclic voltammetry. Across a wide range of scan rates, the results of the voltammetry show that the formation of LIPPS yields a considerable enhancement in the electrochemical activity of the nickel surface. The observed enhancement is attributed to both the greater surface area of the rippled surface relative to a planar nickel surface and a thicker NiO x layer generated by the laser process. The surface of nickel metal foils was processed with the use of ultra-short pulse length, low energy laser light. Cyclic voltammetry shows increased electrochemical activity of these laser processed foils. • The surface of Ni foils was processed by ultra-short pulse length, low energy laser light. • The technique produced periodic ripple micro-structures (LIPPS) at the surface of the Ni. • LIPPS yields an increased electrochemical activity relative to unprocessed planar Ni by a factor of 2.5. • LIPPS electrode modification could be relevant for Ni based micro-battery systems." @default.
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- W2015906086 date "2014-12-01" @default.
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- W2015906086 title "Electrochemical performance of laser micro-structured nickel oxyhydroxide cathodes" @default.
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- W2015906086 doi "https://doi.org/10.1016/j.jpowsour.2014.07.167" @default.
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