Abstract
BackgroundThis research aimed to synthesize a Pb/CF cloth/Pb composite as a highly efficient lead-carbon electrode for lead-acid batteries (LAB). Degradation of lead–acid batteries (LAB) often results from intermittent renewable energy usage. The addition of carbon materials can help inhibit LAB degradation. Thin plates made of pure Pb exhibit a high hydrogen evolution overpotential and greater resistance to corrosion than Pb alloys in dilute H2SO4. Meanwhile, activated CF cloth is a monolithic, conductive, and hydrophilic material. However, carbon materials are chemically inert making the Pb/C interface with high resistance and tend to have a lower hydrogen evolution overpotential. MethodsFollowing chemical modification, activated CF cloth was used to fabricate LCF through hot pressing. The formation mechanism of LCF was then determined by analyzing the surface characteristics of the CF cloth after chemical modification. Significant findingsThe inner CFs in LCF were wetted by liquid Pb. The charge transfer resistivity (Rct) of LCF was 18.82 Ω, which is considerably lower than that of Pb (616.80 Ω). Both pure LCF and paste-type LCF AGM batteries exhibit notable charge acceptance during HRPSoC cycling. The remaining 1C capacity of paste-type LCF battery remains stable over 1000 cycles with high 1C rate charge and 3C rate discharge cycling.
Published Version
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