Related Experiment Video
Updated: Jan 3, 2026
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
22.2K
Metal Coated Polypropylene Separator with Enhanced Surface Wettability for High Capacity Lithium Metal Batteries
Mir Mehraj Ud Din1, Ramaswamy Murugan2
1High Energy Density Batteries Research Laboratory, Department of Physics, Pondicherry University, Puducherry, 605014, India.
Scientific Reports
|November 16, 2019
Summary
Researchers developed a niobium-coated separator for lithium metal batteries, enhancing safety and performance. This innovation addresses dendrite formation and improves cycling stability for next-generation energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Lithium metal batteries offer high energy density but face challenges with metallic lithium's reactivity and dendrite formation.
- Current battery technology requires improved safety and stability for widespread adoption in high-energy applications.
Purpose of the Study:
- To develop a novel separator for lithium metal batteries that enhances safety and electrochemical performance.
- To investigate the efficacy of niobium coating on polypropylene separators for improved lithium stripping/plating and cycling stability.
Main Methods:
- Fabrication of a niobium (Nb) metal-coated, binder-free, and hydrophilic polypropylene (PP) separator using radio frequency (RF) magnetron sputtering.
- Characterization of separator properties, including surface wettability and performance in symmetric lithium cells.
- Testing of the Nb-coated separator with lithium nickel manganese cobalt oxide (LNMC) and sulfur cathodes.
Main Results:
- The Nb-coated separator exhibited excellent hydrophilicity and enhanced surface wettability.
- Symmetric cells demonstrated reduced interface resistance, uniform voltage profiles over 1000 cycles, and suppressed polarization.
- Nb-coated separators showed improved cycling stability when paired with LNMC and sulfur cathodes.
Conclusions:
- Niobium coating effectively mitigates safety concerns associated with metallic lithium by promoting uniform ion distribution and suppressing dendrite growth.
- The developed separator enhances the cycling stability and overall performance of lithium metal batteries, paving the way for safer, high-energy-density devices.
