Year 2000 R&D status of large-scale lithium ion secondary batteries in the national project of Japan

Hydrothermal synthesis of LiMn2O4/C composite as a cathode for rechargeable lithium-ion battery with excellent rate capability

“…In recent years, spinel LiMn 2 O 4 as a cathode material for lithiumion battery has been studied intensively because of its low cost, rich in natural sources, and low toxicity [1][2][3][4]. The electrochemical properties of LiMn 2 O 4 are strongly dependent on the synthetic methods [5,6].…”

“…Furthermore, by introducing reducing agent, e.g. glucose, LiMn 2 O 4 can be obtained within 1 day at 150-200 • C. Therefore, carbon is also expected to be a reducing agent to accelerate the formation of LiMn 2 high rate capability due to that carbon can serve as conductors to improve conductivity [27,[29][30][31]. In this study, we synthesized the LiMn 2 O 4 /C composite through hydrothermally treating a precursor MO/C composite in LiOH aqueous solution, and examined the rate capability of the composite for lithium-ion battery.…”

Enhancement of ionic conductivity of PEO-LiTFSI electrolyte upon incorporation of plasticizing lithium borate

“…Liquid electrolytes have been industrialized in 1990s for small size lithium batteries [1][2][3]. However, safety problems such as liquid leakage, flammability, etc., restrict them to be applied in large size cells [4].…”

PEO nanocomposite polymer electrolyte for solid state symmetric capacitors

“…Thus, the capacitor returns gradually to the stable state. [33][34][35] Real capacitors require a current called leakage current I leakage to maintain constant voltage, it slowly discharge a charged capacitor that has no external connections to its terminals and this process is called self-discharge. It is measured by applying a DC voltage to the capacitor and the current required to maintain that voltage.…”