Textile PAN Carbon Fibers Cathode for High-Voltage Seawater Batteries

被引:3
作者
Ferreira, Joao [1 ,2 ,3 ]
Salgueiro, Tiago [1 ,2 ,3 ]
Marcuzzo, Jossano [4 ]
Arruda, Eduardo [5 ]
Ventura, Joao [2 ,3 ]
Oliveira, Joana [1 ,6 ]
机构
[1] Univ Porto, Fac Engn, Dept Engn Phys, P-4200465 Porto, Portugal
[2] Univ Porto, Fac Sci, Dept Phys & Astron, P-4169007 Porto, Portugal
[3] Inst Phys Adv Mat Nanotechnol & Photon IFIMUP, P-4169007 Porto, Portugal
[4] JMHP Consultoria Mat Ltda, Dept PDI, BR-12301600 Jacarei, SP, Brazil
[5] Fundacao Univ Fed Grande Dourados UFGD Unidade 2, Fac Ciencias & Tecnol FACET Quim, BR-79804970 Dourados, MS, Brazil
[6] INEGI, Associate Lab Energy Transports & Aerosp LAETA, P-4200465 Porto, Portugal
来源
BATTERIES-BASEL | 2023年 / 9卷 / 03期
关键词
seawater battery; activated carbon felt; electrical double layer; surface area; ELECTRODE; PERFORMANCE;
D O I
10.3390/batteries9030178
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Rechargeable sodium seawater batteries (SWBs) are gaining the world leadership of high voltage energy storage devices for marine environments. With natural seawater as the source of active material, SWBs can be supplied infinitely with Na cations. Because of their open-structured cathode, the cathode material's specific surface area, porosity and wettability need to be optimized to achieve a high-performance cell. In this work, activated textile polyacrylonitrile (PAN) fibers were used to produce an activated carbon felt with a facile manufacturing process. The easy and low-cost production of these fibers makes them excellent candidates for energy storage applications involving oxygen evolution and reduction reactions. The electrochemical performance results of the fabricated activated PAN fibers and of commercial carbon felts were measured and compared, being characterized through galvanostic charge discharge cycles, electrochemical impedance spectroscopy and cyclic voltammetries. A performance improvement was observed with PAN activated carbon felt as half cell with a capacitance increase (about 9000%), and as full cell with a smaller voltage gap (about 10%) and increased gravimetric capacitance (about 260%) when compared to the commercial carbon felt. The successful implementation of PAN activated carbon felts in an aqueous environment opens new paths toward high performance seawater battery's cathodes.
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页数:11
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