Hierarchical porous carbon@PbO1-x composite for high-performance lead-carbon battery towards renewable energy storage

Jian Yin, Nan Lin, Zhe Qi Lin, Yue Wang, Cai Ling Chen, Jun Shi, Jin Peng Bao, Hai Bo Lin, Shou Hua Feng, Wenli Zhang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Utility lead-carbon batteries in renewable energy storage applications require fast charge ability and long-term cycling stability, which introduces a fundamental problem that how to improve the electrode kinetics and cycling stability of lead-carbon electrode. Herein, we present an oxygen-deficient PbO decorated rice-husk-based hierarchical porous carbon (RHHPC@PbO1-x) composite as an effective additive of negative electrode in lead-carbon battery. The RHHPC@PbO1-x composite was prepared from a facile sol-gel/annealing method. The obtained RHHPC@PbO1-x composite and the lead-carbon electrode with RHHPC@PbO1-x additives were characterized by various physicochemical methods, such as scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and multiple electrochemical methods. The RHHPC@PbO1-x composite enhances the electrochemical active surface area and strengthens the structural stability of lead-carbon electrode, which improves the electrode kinetics and the cycling stability of lead-carbon negative electrode. As a result, the cycling life of a 2 V/4 Ah valve-regulated lead-carbon battery with RHHPC@PbO1-x composite additives exhibited a lifespan of 900 cycles (triple of the blank battery). Our work gives an insight for interphase and porosity tuning of lead-carbon additives used in lead-carbon battery. Based on the existing mature production facilities of lead-acid battery, it is promising for this RHHPC@PbO1-x additive to be used in commercial lead-carbon batteryies for renewable energy storage.
Original languageEnglish (US)
Pages (from-to)116675
JournalEnergy
Volume193
DOIs
StatePublished - Dec 4 2019

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