What electrodes I can use, what cathode and anode, binders etc in order to increase its capacity?
Hello,
For sodium ion batteries it's a little bit like for Lithium ion ones, you have a lot of different electrode materials that you can use, depending on what application you target.
If you want to do a full cell, hard carbon is usually used as negative electrode with CMC binder. For positive electrode polyanionic phases or layered oxides are amonst the most performant.
In my case I am working with polyanionic positive electrode material (Na3V2(PO4)2F3-yOy) vs Hard carbon and it works well
See: ACS Appl. Energy Mater. 2022, 5, 1065−1075
Harshith Venkat V I think you can use non-graphitic carbon which allows the intercalation of Na ions as the anode. As a cathode, you can use any layered material such as NaCoO2, NaNi0.5Mn0.5O2 etc. electrolyte of course Na-ion conducting ones
In general, hard carbon is the best choice for anode material, and Na3V2(PO4)3 is the most studied for cathode material. The cathode materials can be divided into transition metal oxides (TMOs), NASICON-structured material and Prussian blue analogs (PBAs). Poly(1,1-difluoroethylene) (PVDF) is a common binder.
Qianchen Wang How do we prepare the hard carbon? Can you share some literature on that?
DOI: 10.1002/adma.201806664, 10.1002/smll.201906883, 10.1021/acsami.9b01419, 10.1039/c6ra17485j. And an excellent review (DOI: 10.1002/aenm.201600943) can help you understand SIBs.
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