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Article Dans Une Revue ACS Energy Letters Année : 2021

Porous RuOxNySz Electrodes for Microsupercapacitors and Microbatteries with Enhanced Areal Performance

Résumé

Three-dimensional (3D) electrodes with improved areal energy have become increasingly important for microscale energy storage at the dawn of the Internet of Things. At its heart are a plethora of microelectronic devices that require embedded energy harvesters and energy storage components to ensure autonomy. In this study, we develop porous metallic microstructures and their conformal coating with a new RuOxNySz material through a facile optimized electrodeposition process. The microporous structure with a nanodendritic network shows high areal capacitance (14.3 F cm–2 for the electrode and 714 mF cm–2 for an all-solid-state microsupercacitor) and stable performance (>80% retention after 5000 cycles) toward H+ storage. Remarkable Li+ storage capability with high areal capacity (5 mAh cm–2) and rate characteristics (1.5 mAh cm–2 at 3C) is also observed. These results coupled with a facile synthetic strategy can thus offer inspiration for large-scale production of 3D porous electrodes for microbatteries and microsupercapacitors.
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Dates et versions

hal-03063689 , version 1 (14-12-2020)

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Sai Gourang Patnaik, Jensheer Shamsudeen Seenath, David Bourrier, Sagar Prabhudev, Daniel Guay, et al.. Porous RuOxNySz Electrodes for Microsupercapacitors and Microbatteries with Enhanced Areal Performance. ACS Energy Letters, 2021, 6, pp.131-139. ⟨10.1021/acsenergylett.0c02017⟩. ⟨hal-03063689⟩
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