P2-type Na(2/3)Ni(1/3)Mn(2/3-x)Ti(x)O2 as a new positive electrode for higher energy Na-ion batteries

Hiroaki Yoshida; Naoaki Yabuuchi; Kei Kubota; Issei Ikeuchi; Arnd Garsuch; Martin Schulz-Dobrick; Shinichi Komaba

doi:10.1039/c3cc49856e

P2-type Na(2/3)Ni(1/3)Mn(2/3-x)Ti(x)O2 as a new positive electrode for higher energy Na-ion batteries

Chem Commun (Camb). 2014 Apr 11;50(28):3677-80. doi: 10.1039/c3cc49856e.

Authors

Hiroaki Yoshida¹, Naoaki Yabuuchi, Kei Kubota, Issei Ikeuchi, Arnd Garsuch, Martin Schulz-Dobrick, Shinichi Komaba

Affiliation

¹ Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan. komaba@rs.kagu.tus.ac.jp.

PMID: 24514951
DOI: 10.1039/c3cc49856e

Abstract

New electrode materials of layered oxides, Na2/3Ni1/3Mn2/3-xTixO2 (0 ≤ x ≤ 2/3), are successfully synthesized, and their electrochemical performance is examined in aprotic Na cells. A Na//Na2/3Ni1/3Mn1/2Ti1/6O2 cell delivers 127 mA h g(-1) of reversible capacity and the average voltage reaches 3.7 V at first discharge with good capacity retention.