التفاصيل البيبلوغرافية
| العنوان: |
Improved high-rate performance of Na3V2(PO4)3 with an atomic layer deposition-generated Al2O3 layer as a cathode material for sodium-ion batteries. |
| المؤلفون: |
Dong, Lei1,2, RuiXian, Liu1,2, Feng, Jianmin1,2 fjmtjnu@hotmail.com, Long, CongLai1,2, Wang, Guizhi1,2, Kou, Huari1,2, Zhao, MengLi1,2, Dong, L.1,2, Li, Xifei1,2, Li, Dejun1,2 dli1961@126.com |
| المصدر: |
Materials Letters. Oct2017, Vol. 205, p75-78. 4p. |
| مصطلحات موضوعية: |
*STORAGE batteries, *SODIUM ions, *ATOMIC layer deposition, *ALUMINUM oxide, *CATHODES, *SUPERIONIC conductors |
| مستخلص: |
Because of its sodium superionic conductor structure, Na 3 V 2 (PO4) 3 has been recognized as a promising candidate cathode material for room-temperature sodium-ion batteries. However, Na 3 V 2 (PO4) 3 suffers from a severe capacity loss, especially at a high charge-discharge rate. To overcome this limitation, in this work Na 3 V 2 (PO4) 3 was coated with Al 2 O 3 films (NVP@Al) using atomic layer deposition (ALD). The electrochemical performances of the NVP@Al nanocomposites as cathodes for sodium-ion batteries were investigated NVP@Al nanocomposite exhibited a relatively flat voltage plateau at 3.4 V in a non-aqueous sodium cell. When tested as a cathode in a voltage range of 2.5 V–4.0 V, NVP@ Al exhibited initial charge and discharge capacities of 132 mAh/g and 107 mAh/g, respectively. The ALD-coated Na 3 V 2 (PO4) 3 electrodes exhibited significantly increased capacities, because of transformations of the as-deposited Al 2 O 3 into a more Na + -conductive material. These preliminary results indicate that NVP@Al is a prospective cathode material for room-temperature sodium-ion batteries. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
