Anode for Lithium Secondary Batteries and Method for Preparing the Same

Bacterial Cellulose-Based Lithium Secondary Battery Anode Technology

This technology relates to a lithium secondary battery anode that improves interfacial stability by using a carbon current collector derived from bacterial cellulose and a lithium-compound layer.

Conventional lithium-metal anodes have suffered from low coulombic efficiency, electrolyte decomposition, volume change, and dendritic growth, resulting in poor stability. This technology forms a stable lithium-compound layer on a carbon current collector to control ion permeation and interfacial reactions.

As a result, it can reduce electrolyte decomposition and improve coulombic efficiency and rate performance, thereby contributing to enhanced energy density and output performance of lithium secondary batteries.

Key Features:

• It uses a carbon current collector derived from bacterial cellulose as an anode framework.
• It forms a lithium-compound layer on the collector surface, which is advantageous for stable SEI formation.
• It minimizes electrolyte decomposition by controlling lithium-ion permeation and interfacial reactions.