Mitsue Takeuchi

TL;DR: It is proposed that such a charge compensation process by oxide ions is effectively stabilized by the presence of electrochemically inactive niobium ions, which will contribute to the development of a new class of high-capacity electrode materials, potentially with further lithium enrichment (and fewer transition metals) in the close-packed framework structure with oxide ions.

TL;DR: It is demonstrated that the suppression of formation of superoxide-like species on lithium extraction results in reversible redox for oxide ions, which is stabilized by the presence of relatively less covalent character of Mn4+ with oxide ions without the sacrifice of electronic conductivity.

TL;DR: The binary system, xLi3NbO4-(1 - x)LiVO2, was first examined as an electrode material for rechargeable lithium batteries and delivers a reversible capacity of ca.

TL;DR: An active material for a nonaqueous electrolyte energy storage device, containing a lithium-transition metal composite oxide having a crystal structure attributable to space group Fm-3m and represented by the compositional formula (1): Li1+xNbyMezApO2 (1) wherein Me is a transition metal including Fe and/or Mn, 0 < x < 1,0 < y < 0.5, 0.25 ≤ z < 1 and A is an element other than Nb and Me, and 0 ≤ p ≤ 0.2.

TL;DR: An active material for a nonaqueous electrolyte energy storage device contains a lithium-transition metal composite oxide having a crystal structure attributable to space group Fm-3m and represented by the compositional formula as discussed by the authors.