Solid state synthesis of layered sodium manganese oxide for sodium-ion battery by in-situ high energy X-ray diffraction and X-ray absorption near edge spectroscopy

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• 作者：Tianyuan Ma^a ; ^b ; Gui-Liang Xu^a ; Xiaoqiao Zeng^a ; Yan Li^a ; Yang Ren^c ; Chengjun Sun^c ; Steve M. Heald^c ; Jacob Jorne^b ; ^d ; ^{Jacob.jorne@rochester.edu} ; Khalil Amine^a ; Zonghai Chen^a ; ^{zonghai.chen@anl.gov}
• 关键词：In situ HEXRD ; In situ XANES ; Solid-state synthesis ; P2 type Na2/3MnO2 ; Sodium ion battery ; Sodium deficiency
• 刊名：Journal of Power Sources
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：341
• 期：Complete
• 页码：114-121
• 全文大小：2614 K
• 卷排序：341

文摘

Multi intermediate phases including P3 and P′3 was observed before O′3 phase NaMnO2 can be formed at 600 °C. Residue sodium carbonate doesn't have any obvious negative effect on sodium cathode. P2 type Na2/3MnO2 synthesized at 600 °C have low initial charge capacity.