Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5149623 | Journal of Power Sources | 2017 | 5 Pages |
Abstract
Structures and electrochemical performances of Na-rich layered cathode Na2RuO3 are studied by substitution of Zr for Ru. Na2Ru0.95Zr0.05O3 exhibits a combination of disordered and ordered stacking state with a weight fraction of â¼61.57% and 38.43%, respectively. The disordered and ordered Na2Ru0.95Zr0.05O3 exhibits reversible capacity of 137 mAh gâ1 that is consistent with the theoretical capacity at a current density of 1Â C. In addition, the material shows good cyclability with a capacity retention of 77% after 200 cycles at current density of 1Â C, and the Coulombic efficiency remains at about 99% during cycling. The structural evolutions of the Na-rich layered Na2Ru0.95Zr0.05O3 during de(sodiation) have been investigated and found to proceed via a biphasic mechanism.
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Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Shufeng Song, Masashi Kotobuki, Feng Zheng, Qibin Li, Chaohe Xu, Yu Wang, Wei Dong Z. Li, Ning Hu, Li Lu,