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Effect of carbon material in lead-acid battery negative plate under partial state-of-charge

For nearly 150 years, lead–acid batteries have been considered as one of the most promising electrochemical energy storage devices. At present, lead̶–acid batteries are widely used in hybrid electric vehicles. In such high-rate partial state-of-charge duty, the negative plate of the lead̶–acid battery generally suffers progressive sulfation. Studies have shown that the incorporation of a certain amount of carbon in the negative active-material is a potential route to mitigate sulfate accumulation and thereby improve both the charge-acceptance and the cycle-life of the battery. This presentation examines the mechanism of lead sulfate accumulation in negative plates and the role of carbon materials together with their subsequent impact on lead–acid battery performance. On this basis, the future development and prospects of lead-acid batteries are discussed.

Annie Zheng Liqing

Executive Vice President, Leoch Battery

Annie Zheng Liqing, the Executive Vice President of Leoch International, has over 20 years of experience in the International Marketing and Battery Industry. She is in charge of International Business, Strategic Marketing and Global Technical Sales.

Dong Li

Leoch Battery Pte. Ltd.

Dong Li is Chairman of Leoch International Ltd. which he founded 1999. Since then, he has built this Shenzhen-based company into one of the world’s largest manufacturers and suppliers of lead–acid batteries for the telecommunications sector. Dong also founded and owns Marshell Electric Vehicle Ltd. and Marxon Electronics Ltd., which specialise in new energy technologies and high-performance batteries. In total, Dong Li has established more than 50 companies globally, with an annual revenue close to USD$1 billion and employing over 15 000 employees.