title: Negative electrodes for Na-ion batteries.
abstract: Research interest in Na-ion batteries has increased rapidly because of the environmental friendliness of sodium compared to lithium. Throughout this Perspective paper, we report and review recent scientific advances in the field of negative electrode materials used for Na-ion batteries. This paper sheds light on negative electrode materials for Na-ion batteries: carbonaceous materials, oxides/phosphates (as sodium insertion materials), sodium alloy/compounds and so on. These electrode materials have different reaction mechanisms for electrochemical sodiation/desodiation processes. Moreover, not only sodiation-active materials but also binders, current collectors, electrolytes and electrode/electrolyte interphase and its stabilization are essential for long cycle life Na-ion batteries. This paper also addresses the prospect of Na-ion batteries as low-cost and long-life batteries with relatively high-energy density as their potential competitive edge over the commercialized Li-ion batteries.
authors.affiliation: Department of Applied Chemistry, Research Institute for Science and Technology, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan. komaba@rs.kagu.tus.ac.jp mouad.dahbi@rs.tus.ac.jp yabuuchi@rs.kagu.tus.ac.jp keikubota@rs.tus.ac.jp.
authors.forename: Mouad
authors.initials: M
authors.lastname: Dahbi
authors.forename: Naoaki
authors.initials: N
authors.lastname: Yabuuchi
authors.forename: Kei
authors.initials: K
authors.lastname: Kubota
authors.forename: Kazuyasu
authors.initials: K
authors.lastname: Tokiwa
authors.forename: Shinichi
authors.initials: S
authors.lastname: Komaba