Objective

• To reduce lead-acid batteries’ sulfation problem and enhance its cycle life through addition of graphene into electrodes.
• To explore the fundamental electrochemical mechanism of the interface between graphene and active material, as well as its impact on the battery performance.

Approach

• Incorporate graphene into lead-acid battery electrodes in the form of additive and/or 3D current collector in controlling the graphene conductive network
• Functionalize chemical derivative graphene oxide with controlled reduction degree as carbon additive for testing of electrochemical activity
• Investigate fundamental electrochemical mechanism of the interface through experiments and molecular dynamic model

Impact

• Enhance lead-acid batteries partial state of charge (PSoC) cycle life by more than 100% compared to commercial batteries
• Identify key factors governing the interfacial transformation of PbSO4
• Evaluate the impact of interfacial coupling on the battery performance