Nanostructured LiMnO<sub>2</sub> with Li<sub>3</sub>PO<sub>4</sub> Integrated at the Atomic Scale for High-Energy Electrode Materials with Reversible Anionic Redox
Miho Sawamura, Sho Kobayakawa, Jun Kikkawa, Neeraj Sharma, Damian Goonetilleke, Aditya Rawal, Nanaka Shimada, Kentaro Yamamoto, Rina Yamamoto, Yingying Zhou, Yoshiharu Uchimoto, Koji Nakanishi, Kei Mitsuhara, Koji Ohara, Jiwon Park, Hye Ryung Byon, Hiroaki Koga, Masaki Okoshi, Toshiaki Ohta, Naoaki Yabuuchi
Abstract
soft XAS spectroscopy, and the superior reversibility of the anionic redox and the suppression of oxygen loss were also found by online electrochemical mass spectroscopy. The improved reversibility of the anionic redox originates from the presence of phosphorus ions associated with the suppression of oxygen dimerization, as supported by a theoretical study. From these results, the mechanistic foundations of nanostructured high-capacity positive electrode materials were established, and further chemical and physical optimization may lead to the development of next-generation electrochemical devices.