Materials for Sodium-ion Batteries
Just as is the case with lithium-ion batteries, cathode materials are a key component of Sodium-ion batteries. The composition of the cathode material determines the cell voltage and capacity, and thereby the energy density. Sodium-ion cathode materials are typically based on intercalation / de-intercalation compounds, where sodium ions provided by the cathode are inserted into the host lattice (anode) during charge and extracted during discharge, with minimal structural change in the host material.
In contrast to lithium, sodium is one of the most abundant elements in the earth’s crust. Consequently, Na-ion batteries have attracted much attention over the past few years. The choice of cathode material with a particular chemistry depends on various factors, including cell voltage, capacity, energy and power capabilities, cycle life, and temperature of operation.
NEI produces sodium-ion battery materials, which include sodium-based cathode and anode materials, their corresponding carbon-coated counterparts (3-5 wt.% carbon), and sodium-based solid electrolytes. In addition, NEI can customize the primary and secondary particle size, composition, and surface characteristics (e.g., electronically conducting coating layer). Cathode and anode powders can also be cast as an electrode on a suitable current collector (e.g., copper, nickel, or aluminum foil).
NEI can provide a variety of custom synthesized Na-ion materials upon request, such as the materials shown below.
|Material||Chemical Composition||Material Type||Safety Data Sheet|
|Sodium Cobalt Oxide||Na0.7CoO2+x||Cathode||SDS (pdf) »|
|Sodium Manganese Oxide||Na0.44MnO2||Cathode||SDS (pdf) »|
|Sodium Manganese Oxide||Na0.7MnO2+x||Cathode||SDS (pdf) »|
|Sodium Iron Phosphate||NaFePO4||Cathode||SDS (pdf) »|
|Sodium Manganese Phosphate||NaMnPO4||Cathode||SDS (pdf) »|
|*NEW* Sodium Chromium Oxide||NaCrO2 (hexagonal phase)||Cathode||*Coming Soon*|
|*NEW* Sodium Cobalt Phosphate||NaCoPO4||Cathode||*Coming Soon*|
|*NEW* Sodium Nickel Phosphate||NaNiPO4||Cathode||*Coming Soon*|
|Sodium Metatitanate||Na2Ti3O7 (monoclinic phase)||Anode||SDS (pdf) »|
|Sodium Titanium Oxide||Na4Ti5O12 (hexagonal phase)||Anode||SDS (pdf) »|
|*NEW* Sodium Titanium Phosphate||NaTi2(PO4)3 (hexagonal phase)||Anode||*Coming Soon*|
|Sodium Aluminum Titanium Phosphate||Na1.3Al0.3Ti1.7P3O12||Solid Electrolyte||SDS (pdf) »|