12 articles
Iron hexacyanoferrate cathode
An iron hexacyanoferrate (FeHCF) cathode is a Prussian blue analog electrode material for sodium-ion and potassium-ion batteries, storing sodium through the Fe2+/Fe3+ couple in an open cubic framework.
Na3V2(PO4)3
Na3V2(PO4)3, commonly abbreviated NVP, is a sodium vanadium phosphate with the NASICON crystal structure serving as a sodium-ion battery cathode with a voltage near 3.4 V.
P2-type layered oxide
A P2-type layered oxide, formula NaxTMO2, is a cathode material for sodium-ion batteries with trigonal-prismatic sodium sites between TMO2 layers, giving fast Na+ diffusion but a poorly reversible P2–O2 transition at high voltage.
Polyanionic sodium-ion cathode
A polyanionic sodium-ion cathode is a sodium-ion battery positive electrode built from tetrahedral anion units like phosphate or sulfate, one of three main cathode families.
Prussian blue analogue cathode
A Prussian blue analog cathode is a positive electrode for rechargeable batteries, mainly sodium-ion cells, built on the open cyanide-bridged framework of Prussian blue and made cheaply by aqueous synthesis.
Prussian white
Prussian white (Na₂Fe[Fe(CN)₆]) is a sodium iron hexacyanoferrate cathode material for sodium-ion batteries, commercialized by CATL in 2021 at 160 Wh/kg and prized for fast sodium-ion transport and cobalt-free chemistry.
Sodium iron phosphate
Sodium iron phosphate, NaFePO₄, is a cathode material for sodium-ion batteries with olivine and maricite phases; the related pyrophosphate NFPP entered 10,000-ton production in 2025.
Sodium layered oxide
A sodium layered oxide is a cathode material for sodium-ion batteries, formula NaxTMO2, with sodium ions between TMO6 slabs and O3, P3, P2, and O2 structural types.
Sodium manganese oxide
Sodium manganese oxide, written NaxMnO2, is a family of compounds serving as cathode materials in sodium-ion batteries, valued because sodium and manganese are abundant and inexpensive.
Sodium nickel manganese oxide
Sodium nickel manganese oxide, abbreviated NNMO and chiefly the composition NaNi0.5Mn0.5O2, is a layered oxide cathode material for sodium-ion batteries, first used in a full cell in 2011.
Sodium vanadium fluorophosphate
Sodium vanadium fluorophosphate (Na₃V₂(PO₄)₂F₃, commonly abbreviated NVPF) is a polyanionic cathode material for sodium-ion batteries, first synthesized in 1999 and used in TIAMAT's commercial cells.
Sodium vanadium phosphate
Sodium vanadium phosphate, abbreviated NVP, is a NASICON-family compound used as a cathode material in sodium-ion batteries, with a 3.4 V operating voltage and 117.6 mAh/g theoretical capacity.