The capacity, starting ability and charge-acceptance of lead‒acid batteries at low temperatures are strongly influenced by additives (expanders) to the negative plate. Whereas certain organic materials (such as lignin) can significantly increase the capacity at low temperature and improve cold-start performance, the charge-acceptance is often reduced. Accordingly, the research and development of additives that will both increase the discharge ability and improve the charge-acceptance at low temperature are of great practical significance.
The ‘compound’ additives used in the present study consist of an organic material, barium sulfate and special type of carbon. Tests have been conducted on an experimental battery and a 6-QW-60 flooded battery with the new pre-mixed compound additives under the standard GB/T5008-2013 procedure. The results show great improvement in both the starting ability and the charge-acceptance at low temperature.

Shounan Hua
Shandong Jinkeli Power Sources Technology Co., Ltd.

Biography: Shounan Hua graduated from Shandong University (China) in 1961 and with a postgraduate degree from Shandong University in 1964. Since then, he has been engaged in teaching and research activities at the University in the fields of electrochemistry and power sources. Currently, he is an emeritus professor working on lead‒acid batteries and an consultant for the Shandong Jinkeli Power Sources Technology Company.

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