Dry Anode-Free Pouch Cells with LFP + Cu for Lithium-Ion Battery, 1 Ah/pcs/pack, CLIBAFDPCLFPC

Dry Anode-Free Pouch Cells using LiFePO4 (LFP) as the cathode and Copper (Cu) foil as the anode current collector represent a critical research configuration for high-safety, high-energy-density lithium-metal batteries. In this architecture, the cell contains no graphite or silicon anode. During the first charge, Li+ ions are extracted from the LFP olivine structure and electroplated directly onto the bare copper foil to form a thin layer of Lithium Metal. The "Dry" state allows you to prepare stable, moisture-free cell stacks that are ready for specialized electrolyte activation.

The LFP/Cu system is a "zero-excess" configuration: (1) Cathode-Limited: Every milligram of lithium plated on the copper must come from the LFP. (2) In-situ Formation: The lithium metal anode only exists when the cell is in a charged state. (3) The "Zero-Strain" Synergy: LFP is famous for its structural stability during lithiation/delithiation. This is vital in anode-free cells because the Anode side experiences extreme volume changes (from 0-50 um of lithium plating). Having a dimensionally stable LFP cathode prevents the pouch from "breathing" too violently, which would otherwise lead to delamination.

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.