Several industry leading eco-conscious Sony products are showcased here, including examples of product-based initiatives from the four Road to Zero environmental Perspectives.
In response to the need for greater energy efficiency (which is also a pressing environmental issue),
Sony has introduced a 1.2 kWh energy storage module powered by rechargeable
lithium-ion batteries using olivine-type phosphate.
Stable use of fluctuating natural energy sources
As desirable as solar power, wind power, and other natural energy sources are from an environmental standpoint, generation of the energy fluctuates with the weather and time of day. Charging an IJ1001M energy storage module* can contribute in stabilizing the power available from these natural energy sources. Of course in general, the energy storage module has the load-leveling effect of charging at night and other off-peak times for daytime use.
*When used with a suitable controller and inverter/converter etc.
crystal structure of olivine-type phosphate
Li-ion batteries generally surpass typical lead or NiCd rechargeable batteries, which have been used in most storage systems in energy efficiency and density, not to mention storage characteristics. What's more, the iron in Sony energy storage module cathodes has a smaller environmental footprint than cobalt or rare metals in other typical type of rechargeable Li-ion batteries.
The limited useful life of most rechargeable batteries has been a concern, because capacity declines under some conditions of temperature, humidity, charging, and storage. In response, Sony has applied original material and structural technologies in this energy storage module, which, in conjunction with superior olivine-type lithium-ion iron phosphate performance, ensures a useful life of more than a decade*. This translates into a lower environmental impact over many years and cycles of use. Li-ion batteries also lose less energy when discharged than lead-acid or NiCd batteries, so less energy is wasted in use.
*When charged/discharged once a day at room temperature (23°C)
A longer useful life, exceptional safety, rapid charging, and superb scalability are advantages of the olivine-type lithium iron phosphate used as the cathode material in this module. Introduced in April 2011, the module expected in many applications, such as home energy storage system, hybrid or electric vehicle charging, and as an office or school power supply.