Dry Anode-Free Pouch Cells with Layered Oxide NFM111 + Al/C for Sodium-Ion Battery, 1-4 Ah/pcs/pack, CSIBAFDPCNFM111Al

Pairing the O3-type NaNi1/3Fe1/3Mn1/3O2 (NFM111) layered transition-metal oxide cathode with a carbon-modified copper current collector (Cu/C) in an anode-free dry pouch cell architecture represents an advanced, high-energy-density configuration for sodium-ion batteries (SIBs). By eliminating the traditional graphite or hard carbon negative electrode active material and electroplating sodium directly onto the Cu/C current collector during the initial charge, this design maximizes both volumetric and gravimetric energy density while leveraging Earth-abundant, low-cost transition metals (Ni, Fe, Mn).

Testing Processes:

(1) Electrolyte Filling with recommended amount in glovebox.
(2) First Time Aging: 45°C, aging time ≥ 15h in an oven.
(3) Formation conditions: 45°C, 5 min rest; 0.02C constant current charging (10% theoretical capacity or 5 h); 0.1C constant current charging (30% theoretical capacity, 3 h); 5 min rest; total capacity is 40% or 8 h;
(4) Second Time Aging: 45°C, aging time ≥ 24h in a oven
(5) Battery Analyzer for charging and discharging.

References:

1. Y. Jin, et al., Low-solvation electrolytes for high-voltage sodium-ion batteries, Nat. Energy, 2022, 7, 718–725. 
2. B. Liu, et al., Super-wetting interface engineering of space-confined micron-sized alloying anodes for high-performance sodium-based dual-ion batteries, Matter, 2025, 8, 102294.