Polymer hydrogel based quasi-solid-state sodium-ion supercapacitor with 2.5 V wide operating potential window and high energy density

Mohammed Saquib Khan,Boddepalli SanthiBhushan,Kailash Chandra Bhamu,Sung Gu Kang,Himmat Singh Kushwaha,Atul Sharma,Rajnish Dhiman,Ragini Gupta,Malay Kumar Banerjee,Kanupriya Sachdev

Applied Surface Science（2023）

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摘要

•2.5 V wide operating potential window supercapacitor device.•Biodegradable nanocellulose fibre electrode binder.•NaClO4-PVA based quasi-solid-state hydrogel membrane electrolyte.•NrGO || BrGO ASC device delivers the specific capacitance of 251.2 F g−1, at a current density of 1 A g−1.•Energy density of 54.5 Wh kg−1 at a power density of 1.25 kW kg−1 obtained for NrGO || BrGO asymmetric supercapacitor device.

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关键词

Gel electrolyte membranes,Nanocellulose,Nitrogen-doped rGO,Boron-doped rGO,Quasi-solid-state supercapacitors

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