Reducing greenhouse gas emissions and fossil fuel consumption from the transport sector is a major problem for governments worldwide. For example, the European Commission (EC) has demanded automakers to reduce CO2 emissions by 2030 to 55 % of those in 2021, i.e., to less than 50 g CO2 emissions per 1 km driven. Furthermore, the EC aims to remove 100 % CO2 emissions by 2035. These actions require a complete replacement of internal combustion engine vehicles and hybrid vehicles (HEVs) to zero-emission alternatives such as electric vehicles (EVs). Lead–acid batteries in HEVs and EVs are used as auxiliaries unlike conventional SLI and idle stop-start (ISS) batteries and therefore a reduction in both size and weight is require for improving fuel efficiency. Increasing utilization of the positive active material (PAM) is a key target for cost, size and weight saving. In general, it is well known that PAM subject to a high utilization shows poor durability and thereby adversely affects the cycle-life of lead–acid batteries. The use of new additives is a promising approach for maximizing the trade-off between utilization and durability of PAM. This presentation will report the effect of new additives on the characterization, utilization, durability of PAM.
Dr Akihiro Watanabe –
Akihiro Watanabe has both a Bachelor of Engineering degree (2011) and a Master of Engineering degree (2013) from Kanagawa University, Japan, as well as a Doctor of Science from Tokyo Institute of Technology (2017) He joined the Furukawa Battery in 2017 and is now a research engineer in the R&D department.