Layered P2-Na_2/3Co_1/2Ti_1/2O₂ as a high-performance cathode material for sodium-ion batteries

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• 作者：Noha Sabi^a ; ^b ; Siham Doubaji^a ; Kazuki Hashimoto^c ; Shinichi Komaba^c ; Khalil Amine^d ; Abderrahim Solhy^b ; Bouchaib Manoun^b ; ^e ; Essaid Bilal^f ; Ismael Saadoune^a ; ^b ; ^{i.saadoune@uca.ma}
• 关键词：Na-ion batteries ; Na2/3Co1/2Ti1/2O2 ; Cathode material ; P2 structure ; Energy storage
• 刊名：Journal of Power Sources
• 出版年：2017
• 出版时间：28 February 2017
• 年：2017
• 卷：342
• 期：Complete
• 页码：998-1005
• 全文大小：1963 K
• 卷排序：342

文摘

A positive electrode material based on Co and Ti for Na-ion batteries was prepared. Na2/3Co1/2Ti1/2O2 crystallizes in P2-type structure with P63/mmc space group. A specific discharge capacity of 100 mAh g−1 was obtained. Na2/3Co1/2Ti1/2O2 shows better stability than Na2/3CoO2 (Cap. Ret. 98%). Ex-situ XRD confirms the structural stability of the studied material upon cycling.