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Three-dimensional SnS2 nanopetals for hybrid sodium-air batteries

Author(s)
Khan, ZoyauddinParveen, NazishAnsari, Sajid AnsariSenthilkumar, S.T.Park, SeungyoungKim, YoungsikCho, Moo HwanKo, Hyunhyub
Issued Date
2017-12
DOI
10.1016/j.electacta.2017.10.063
URI
https://scholarworks.unist.ac.kr/handle/201301/22964
Fulltext
http://www.sciencedirect.com/science/article/pii/S0013468617321618?via%3Dihub
Citation
ELECTROCHIMICA ACTA, v.257, pp.328 - 334
Abstract
Na-air batteries are regarded as a potential alternate to Li-air batteries due to the abundant sodium source and high theoretical energy density. However, non-aqueous Na-air battery suffers from the electrode polarization owing to the formation of insoluble discharge product, which severely limits its cyclability and performance. Herein, a high performance hybrid Na-air cell is demonstrated using a dual electrolyte (mixed aqueous and non-aqueous electrolyte) system and three dimensionally (3D) grown tin sulfide (SnS2) nanopetals based air electrode. 3D SnS2 nanopetals are synthesized by a facile solvothermal method and used as an air electrode material for hybrid Na-air battery. The vertically-grown and self-assembled ultra-thin nanosheets of 3D SnS2 nanopetals provide exposed active sites for the efficient air and electrolyte diffusion to air electrodes, resulting in high performance hybrid Na-air cell. The fabricated hybrid Na-air cell displays low overpotential gap (0.52 V), high round trip efficiency (83%), high power density (300 mW g(-1)) and good rechargeability up to 40 cycles. The proposed 3D SnS2 nanopetals as air electrodes can provide a robust platform for the future development of Na-air batteries and other energy storage devices.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
ISSN
0013-4686
Keyword (Author)
AqueousBatteryHybridHybrid batteryNa-airNanopetalsSnS2Solvothermal
Keyword
DUAL-ELECTROLYTEOXYGEN BATTERIESPOTENTIAL CATALYSTCERAMIC SEPARATORLITHIUMTHIOACETAMIDEMICROSPHERESSUPEROXIDECONVERSIONNANOSHEETS

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