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In Situ Forming a Black Phosphorene Mixed Ion/Electron Conductor Layer by External Pressure without Binder for
Jiankun Lin1, Chengwei Ma1, Chunli Li2
1Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
ACS Applied Materials & Interfaces
|May 21, 2025
Summary
Researchers developed a novel interface layer using black phosphorene (BP) to improve anode-free lithium metal batteries. This innovation enhances stability and capacity retention for next-generation energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Anode-free lithium metal batteries offer high energy density but suffer from capacity degradation.
- Poor interface compatibility between current collectors and electrolytes hinders Li electrodeposition.
Purpose of the Study:
- To develop a stable interface layer for current collectors in anode-free Li metal batteries.
- To improve Li electrodeposition and enhance battery cycling performance.
Main Methods:
- An ultrathin black phosphorene (BP) mixed ion/electron conductor interface layer was formed in situ on a current collector using pressure.
- The modified current collector was integrated into a Cu-NCM811 cell with high mass loading cathodes.
Main Results:
- The BP hybrid interface layer was formed solely by pressure, without binders, preventing powder shedding.
- The Cu-NCM811 cell demonstrated excellent capacity retention and an average Coulombic efficiency of 99.1%.
Conclusions:
- The pressure-formed BP interface layer effectively addresses Li electrodeposition challenges in anode-free Li metal batteries.
- This strategy provides a foundation for developing long-cycling anode-free Li metal batteries.
