Specific Electrolyte for Sodium-Ion Battery {Na2/3Ni1/3Mn2/3O2 (NNMO) + Na}, 200 g/bottle, CSIBSENNMONa
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Add-Ons
For a half-cell pairing a P2-type Na2/3Ni1/3Mn2/3O2 (NNMO) cathode directly against a metallic sodium (Na) counter/reference electrode, the following features are shown below: (1) Metallic Sodium Interphase (SEI): Fresh, highly electropositive metallic sodium (~ -2.71 V vs. SHE) continuously consumes electrolyte through aggressive parasitic reactions, mossy dendrite nucleation, and "dead sodium" detachment during stripping/plating. (2) High-Voltage Cathode Oxidation: NNMO operates up to 4.0–4.3 V vs. Na/Na+. The solvent must resist oxidation and catalytic decomposition at high potentials while withstanding the severe lattice shrinkage occurring during the P2–O2 phase transformation (≥ 4.15 V). (3) No Lithium/Carbonate Gas Trapping Restrictions: Unlike closed full pouch cells with limited sodium inventories where FEC concentration must be strictly dialed down to <2 wt%, half-cells possess an infinite sodium reservoir from the metal foil. This allows higher additive fractions (or even pure fluorinated solvent baselines) to establish an inorganic-rich passivation layer on both electrodes.
| Part Number |
CSIBSENNMONa (C-SIB-SE-NNMONa) |
| Appearance |
Colorless Liquid |
| Electrolyte Composition |
Undisclosed recipe from leading manufacturer that has been well demonstrated in pilot-scale SIB. |
| Humidity Level |
<20 ppm |
| Acid Level |
<100 ppm |
| Performance |
>90% capacity retention after 1000 cycles at 0.5C (2.0–4.2 V) (for reference only) |
| Package Size | 200 g/bottle |
Notes: Please store the specific SIB electrolyte in the glovebox due to its sensitivity to humidity.
References:
- C. Chen, et al. Effects of ester-based electrolyte composition and salt concentration on the Na-storage stability of hard carbon anodes, Journal of Power Sources, 2020, 471, 228455
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A. Zeng, et al. Robust interface for O3-type layered cathode towards stable ether-based sodium-ion full batteries, Energy Storage Materials, 2025, 74, 103894