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Open AccessArticle

High Capacity Prismatic Type Layered Electrode with Anionic Redox Activity as an Efficient Cathode Material and PVdF/SiO2 Composite Membrane for a Sodium Ion Battery

1
#120, Energy Materials Lab, Department of Physics, Science Block, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
2
Department of Chemical Engineering, R&D Center for Membrane Technology, Research Center for Circular Economy, Chung-Yuan Christian University, Chung-Li, 32023, Taiwan
3
Metal Industries Research and Development Centre, Kaohsiung 81160, Taiwan
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(3), 662; https://doi.org/10.3390/polym12030662
Received: 20 February 2020 / Revised: 11 March 2020 / Accepted: 13 March 2020 / Published: 16 March 2020
A prismatic type layered Na2/3Ni1/3Mn2/3O2 cathode material for a sodium ion battery is prepared via two different methods viz., the solid state and sol–gel method with dissimilar surface morphology and a single phase crystal structure. It shows tremendous electrochemical chattels when studied as a cathode for a sodium-ion battery of an initial specific discharge capacity of 244 mAh g−1 with decent columbic efficiency of 98% up to 250 cycles, between the voltage range from 1.8 to 4.5 V (Na+/Na) at 0.1 C under room temperature. It is much higher than its theoretical value of 173 mAh g−1 and also than in the earlier reports (228 m Ah g−1). The full cell containing this material exhibits 800 mAh g−1 at 0.1 C and withstands until 1000 cycles with the discharge capacity of 164 mAh g−1. The surpassing capacity was expected by the anionic (oxygen) redox process, which elucidates the higher capacity based on the charge compensation phenomenon. View Full-Text
Keywords: sodium ion battery; cathode material; surpassing capacity; charge compensation; anionic redox process sodium ion battery; cathode material; surpassing capacity; charge compensation; anionic redox process
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MDPI and ACS Style

Ponnaiah, A.; Rengapillai, S.; Karuppiah, D.; Marimuthu, S.; Liu, W.-R.; Huang, C.-H. High Capacity Prismatic Type Layered Electrode with Anionic Redox Activity as an Efficient Cathode Material and PVdF/SiO2 Composite Membrane for a Sodium Ion Battery. Polymers 2020, 12, 662.

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