期刊
IONICS
卷 25, 期 3, 页码 1105-1115出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-018-2830-x
关键词
Sodium-ion batteries; Transition metal oxide; Cathode materials; O3 phase; Ru doping
资金
- Science and Technology Development Project of Shandong Province [2016GGX102003, 2017GGX20105]
- Natural Science Foundation of Shandong Province [ZR2017BEM032]
- China Postdoctoral Science Foundation [2018M632673]
- Fundamental Research Funds of Shandong University [2015TB016, 2016JC009]
In this research, a novel layered O3-type NaNi0.48Mn0.3Ti0.2Ru0.02O2 is fabricated by using solid-state method for sodium-ion batteries. Sodium-ion battery (SIB) can be a promising alternative to the current lithium-ion battery (LIB) technology due to the shortage of lithium in nature and higher cost. As a promising cathode material, NaNi0.48Mn0.3Ti0.2Ru0.02O2 electrode shows a high reversible capacity of 155.3mAhg(-1) at 0.05C (12mAg(-1)) in the range of 1.5-4.5V and exhibits a favorable coulombic efficiency. DFT calculation and X-ray diffraction, Raman, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy analysis are introduced to reveal the effects of substitution of Ru4+ for Ni2+ including the decreasing electronic localization, more stable material structure, wider sodium-ion diffusion channels and good diffusion coefficient of Na. The doping of Ru has paved a new way to enhance the electrochemical performances of O3-type cathode materials for SIBs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据