Nanotube-structured Na2V3O7 as a Cathode Material for Sodium-Ion Batteries with High-rate and Stable Cycle Performances

Naoto Tanibata, Yuki Kondo, Shohei Yamada, Masaki Maeda, Hayami Takeda, Masanobu Nakayama, Toru Asaka, Ayuko Kitajou, Shigeto Okada

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Sodium ion batteries meet the demand for large-scale energy storage, such as in electric vehicles, due to the material abundance of sodium. In this report, nanotube-type Na2V3O7 is proposed as a cathode material because of its fast sodium diffusivity, an important requirement for sodium ion batteries, through the investigation of ~4300 candidates via a high-throughput computation. High-rate performance was confirmed, showing ~65% capacity retention at a current density of 10C at room temperature, despite the large particle size of >5 μm. A good cycle performance of ca. 94% in capacity retention after 50 cycles was obtained owing to a small volumetric change of <0.4%.

Original languageEnglish
Article number17199
JournalScientific reports
Volume8
Issue number1
DOIs
Publication statusPublished - Dec 1 2018

All Science Journal Classification (ASJC) codes

  • General

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