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IMAGE: The higher capacity of this new hard carbon electrode material means that a 19% increase in energy density by weight is possible in sodium-ion batteries compared with lithium-ion batteries. view more
Credit: Shinichi Komaba from Tokyo University of Science
Cost-effective rechargeable batteries are at the heart of virtually all portable electronic devices, which have become ubiquitous in modern daily life. Moreover, rechargeable batteries are essential components in many environment-friendly technologies, such as electric cars and systems that harvest renewable energy. They are also key enablers of various medical devices and facilitate research in various fields as the energy source of electronic sensors and cameras. So, it shouldn t come as a surprise that there is a lot of effort spent in developing better and cheaper rechargeable batteries.