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Na-rich layered Na2Ti1-xCrxO3-x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life.
Sci Rep. 2017 03 23; 7(1):373.SR

Abstract

Rechargeable lithium batteries have been well-known and indispensable for portable electronic devices, and have the potential to be used in electric vehicles and smart grids. However, the growing concerns about the availability of lithium resources for large-scale applications have revived interest in sodium ion batteries. Of many obstacles to commercialization of Na-ion batteries, achieving simultaneously a large reversible capacity and good cycling capability of electrode materials remains a major challenge. Here, we report a new cathode material, Na-rich layered oxide Na2Ti0.94Cr0.06O2.97, that delivers high reversible capacity of 336 mAh g-1 at current density of 18.9 mA g-1 along with promising cycling capability of 74% capacity retention over 1000 cycles at current of 378 mA g-1. The high capacity is associated to the redox reaction of oxygen, which is confirmed here by a combined experimental and theoretical study. The present work therefore shows that materials beyond mainstream layered oxides and polyanion compounds should be considered as candidate high-performance cathodes for Na-ion batteries.

Authors+Show Affiliations

College of Aerospace Engineering, Chongqing University, Chongqing, 400044, P.R. China. sfsong@cqu.edu.cn.Materials Science Group, Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore.Materials Science Group, Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore.Materials Science Group, Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore.College of Aerospace Engineering, Chongqing University, Chongqing, 400044, P.R. China.College of Aerospace Engineering, Chongqing University, Chongqing, 400044, P.R. China. ninghu@cqu.edu.cn. The State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing, 400044, P.R. China. ninghu@cqu.edu.cn.Materials Science Group, Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore. luli@nus.edu.sg. National University of Singapore Suzhou Research Institute, Suzhou, P.R. China. luli@nus.edu.sg.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

28336964

Citation

Song, Shufeng, et al. "Na-rich Layered Na2Ti1-xCrxO3-x/2 (x = 0, 0.06): Na-ion Battery Cathode Materials With High Capacity and Long Cycle Life." Scientific Reports, vol. 7, no. 1, 2017, p. 373.
Song S, Kotobuki M, Chen Y, et al. Na-rich layered Na2Ti1-xCrxO3-x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life. Sci Rep. 2017;7(1):373.
Song, S., Kotobuki, M., Chen, Y., Manzhos, S., Xu, C., Hu, N., & Lu, L. (2017). Na-rich layered Na2Ti1-xCrxO3-x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life. Scientific Reports, 7(1), 373. https://doi.org/10.1038/s41598-017-00346-x
Song S, et al. Na-rich Layered Na2Ti1-xCrxO3-x/2 (x = 0, 0.06): Na-ion Battery Cathode Materials With High Capacity and Long Cycle Life. Sci Rep. 2017 03 23;7(1):373. PubMed PMID: 28336964.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Na-rich layered Na2Ti1-xCrxO3-x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life. AU - Song,Shufeng, AU - Kotobuki,Masashi, AU - Chen,Yingqian, AU - Manzhos,Sergei, AU - Xu,Chaohe, AU - Hu,Ning, AU - Lu,Li, Y1 - 2017/03/23/ PY - 2016/09/28/received PY - 2017/02/22/accepted PY - 2017/3/25/entrez PY - 2017/3/25/pubmed PY - 2017/3/25/medline SP - 373 EP - 373 JF - Scientific reports JO - Sci Rep VL - 7 IS - 1 N2 - Rechargeable lithium batteries have been well-known and indispensable for portable electronic devices, and have the potential to be used in electric vehicles and smart grids. However, the growing concerns about the availability of lithium resources for large-scale applications have revived interest in sodium ion batteries. Of many obstacles to commercialization of Na-ion batteries, achieving simultaneously a large reversible capacity and good cycling capability of electrode materials remains a major challenge. Here, we report a new cathode material, Na-rich layered oxide Na2Ti0.94Cr0.06O2.97, that delivers high reversible capacity of 336 mAh g-1 at current density of 18.9 mA g-1 along with promising cycling capability of 74% capacity retention over 1000 cycles at current of 378 mA g-1. The high capacity is associated to the redox reaction of oxygen, which is confirmed here by a combined experimental and theoretical study. The present work therefore shows that materials beyond mainstream layered oxides and polyanion compounds should be considered as candidate high-performance cathodes for Na-ion batteries. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/28336964/Na_rich_layered_Na2Ti1_xCrxO3_x/2__x_=_0_0_06_:_Na_ion_battery_cathode_materials_with_high_capacity_and_long_cycle_life_ L2 - http://dx.doi.org/10.1038/s41598-017-00346-x DB - PRIME DP - Unbound Medicine ER -
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