喷雾干燥法制备纯Na2CoPO4F钠离子电池正极材料

ECS Electrochemistry Letters Pub Date : 2015-01-01 DOI:10.1149/2.0061506EEL

H. Zou, Shouding Li, Xiaobiao Wu, M. J. McDonald, Yong Yang

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引用次数: 52

摘要

Na2CoPO4F作为钠离子电池正极材料的预期理论能量密度超过500 Wh kg−1，即使考虑每个公式单位只使用一个电子。因此，它是钠离子电池能量密度最高的正极材料之一。本文采用喷雾干燥和高温烧结的方法成功合成了纯相Na2CoPO4F/C纳米复合材料。与金属钠相比，Na2CoPO4F/C纳米复合材料的放电容量为107 mAh g−1，电压平台为4.3 v©2015 The Electrochemical Society。[DOI: 10.1149/2.0061506eel]版权所有

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Spray-Drying Synthesis of Pure Na2CoPO4F as Cathode Material for Sodium Ion Batteries

The expected theoretical energy density of Na2CoPO4F as a cathode material for sodium ion batteries surpasses 500 Wh kg−1 even if considering only one-electron utilized per formula unit. It is therefore one of the highest energy density cathode materials for sodium-ion batteries. In this work, pure phase Na2CoPO4F/C nanocomposite was successfully synthesized by a spray-drying and high temperature sintering method. The Na2CoPO4F/C nanocomposite, when tested vs. sodium metal, delivered a discharge capacity of 107 mAh g−1 with a voltage plateau at 4.3 V. © 2015 The Electrochemical Society. [DOI: 10.1149/2.0061506eel] All rights reserved.

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ECS Electrochemistry Letters ELECTROCHEMISTRY-MATERIALS SCIENCE, MULTIDISCIPLINARY

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