For Efficient Energy Use ～Secondary Battery Materials～

SUMITOMO CHEMICAL COMPANY, LIMITED

Outline

Amid the significantly expanding sale of electric cars and plug-in hybrid cars, demand for lithium-ion secondary batteries has been growing rapidly in recent years, mainly for car mounting use. Eco-friendly vehicles incorporating our battery materials (Separator, Cathode, Alumina) will help reducing the GHG emission.

Our battery materials including PERVIO^TM, which is a separator for lithium-ion secondary batteries, were certified by Sumika Sustainable Solutions, for their use in new energy sources as products, parts and materials used for their development, and also for their contribution to the reduction of greenhouse gases.

Description

As far as lithium-ion secondary batteries are concerned, the market calls for the batteries to offer both higher capacity and more enhanced safety at the same time, with the ever increasing needs for electric cars and smartphones to have higher functionality, lighter weight and a prolonged time before battery re-charge. The specific advantage of PERVIO^TM, which has promoted its use mainly in batteries for cars, lies in the capability of contributing to greater safety of batteries owing to its distinct structure of aramid as a heat-resistant layer formed on a polyolefin substrate. Furthermore, our aramid separators are regarded highly by customers because they are superior in safety (heat resistance) compared to other companies' ceramic separators and can contribute weight reduction in kilograms per EV.

Sumitomo Chemical positions "Environment and Energy" as one of its core domains in its initiatives to develop next-generation businesses for the Company. In the field of battery-related components and materials, which help advance efficient use of energy, Sumitomo Chemical will continue to develop innovative technologies for separators and cathode materials as it further strengthens the business in the field.

* As a concrete initiative to contribute to reducing environmental impact, which is one of our material issues, we have designated those of our products and technologies that contribute to such issues as global warming countermeasures, reducing environmental burdens, and effective use of resources, as Sumika Sustainable Solutions (SSS). By promoting the development and widespread use of these products and technologies, the Sumitomo Chemical Group is offering solutions that will help build a sustainable society and striving to create both economic and social value. In addition, we quantify our contribution to global environmental issues by calculating sales revenues of SSS-designated products and technologies and the amount they contribute to the reduction of greenhouse gases.