標題: A Lithium-Ion Rechargeable Full Cell Using the Flower-like Na3V2(PO4)(3)@C Cathode and Li4Ti5O12 Anode
作者: Akhtar, Mainul
Pradhan, Sunil Kumar
Chang, Jeng-Kuei
Majumder, Subhasish Basu
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Li-ion full cell;microwave-assisted hydrothermal synthesis;Na3V2(PO4)(3) microflower;Li4Ti5O12 anode;cycleability;power density;Li salt-based organic electrolyte
公開日期: 18-五月-2020
摘要: In the present work, we have demonstrated that nanopetal-assembled hierarchical carbon-coated Na3V2(PO4)(3) (nNVP@C) microflowers, synthesized via a microwave-assisted hydrothermal route, play an important role for yielding superior electrochemical characteristics of a Li4Ti5O12 (LTO)//nNVP@C full cell. Thus, the full cell yields superior power density with decent discharge capacity after extended cycling and good rate performance. The nanosize petals help Li+ to diffuse faster in NVP particles, and the inner mesoporous morphology of microflowers allows the electrolyte to easily penetrate into the embedded NVP@C nanocrystals. Furthermore, the homogeneous carbon coating provides an elastic buffer to mitigate the strain developed during Na+ extraction and subsequent Li+ insertion and extraction. The LTO//nNVP@C full cell is claimed to be suitable for power applications, where relatively thinner electrodes would be flooded with a sufficient amount of the lithium salt-containing organic electrolyte. To improve the cycleability characteristics, one requires to match carefully the Li+ activity in the organic electrolyte with electrode capacity. This would ensure stoichiometric lithium-ion insertion in the LTO electrode together with predominant lithium-ion insertion in the nNVP@C cathode.
URI: http://dx.doi.org/10.1021/acssuschemeng.0c02609
http://hdl.handle.net/11536/154570
ISSN: 2168-0485
DOI: 10.1021/acssuschemeng.0c02609
期刊: ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume: 8
Issue: 19
起始頁: 7523
結束頁: 7535
顯示於類別:期刊論文