Kyocera Japan has developed a new generation of lithium-ion batteries that can reduce the cost of raw materials by about 30% compared to the past. The company plans to set up a trial production line at its Osaka office in 2019, and will begin mass production of storage batteries for houses and factories as soon as 2020. As long as costs can be reduced and barriers to popularization broken, the use of renewable energy is expected to increase.

Lithium-ion batteries need to be filled with electrolyte between the electrodes, but Kyocera has developed a technique of injecting electrolyte into the electrode to make it clay-like. This can reduce the number of electrode layers inside the battery, requiring only a small number of separators and current collectors to separate the electrodes, so the cost of raw materials can be reduced by about 30% compared to conventional products. Since flammable liquid electrolytes are not used, the risk of fire and smoke caused by battery damage is also very low.

Kyocera plans to establish a trial production line at its Osaka office in 2019, and strives to start mass production as early as 2020. First, it will produce batteries for homes and factories. It will be combined with the company's main business, solar power generation equipment, to promote the popularization of renewable energy.

In Japan, batteries for ordinary residential batteries are priced at around 1 million yen. At present, it is difficult to recover the investment for the self-production and self-use of the power generated by photovoltaic panels. However, in terms of renewable energy, some households are expected to stop selling electricity outside the country due to the end of the fixed-price renewable energy purchase system (FIT) in November, and the situation of self-production and self-use will increase.

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