Pilotaxitic Na1.1V3O7.9 nanoribbons/graphene as high-performance sodium ion battery and aqueous zinc ion battery cathode

By Yangsheng Cai, Fei Liu, Zhigao Luo, Guozhao Fang, Jiang Zhou, Anqiang Pan, S. Liang. Energy Storage Materials, 2018

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Abstract For the development of high-performance sodium and aqueous zinc ion batteries, the exploitation of suitable cathode materials is urgently needed. In this work, pilotaxitic Na1.1V3O7.9 nanoribbons/graphene (Na1.1V3O7.9@rGO) have been prepared. As cathode for sodium ion battery, the Na1.1V3O7.9@rGO delivers high capacities at different rates. Stable capacity of 84.8 mA h g−1 is obtained at 1 A g−1 after 500 cycles, corresponding to a low capacity fading rate of 0.015% per cycle. The ex-situ XRD and TEM results demonstrate good structural stability of Na1.1V3O7.9@rGO. Most importantly, the layered structure of Na1.1V3O7.9@rGO is firstly employed as cathode for aqueous zinc ion battery. This composite can deliver a high capacity of ~ 220 mA h g−1 at 300 mA g−1, as well as good cyclic stability, which suggests the sodium vanadates may be a good cathode candidate for aqueous zinc ion battery.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/193af5d56fb28dd6eef70da81ba8e92b36241a42