磷酸铬作为一种用于钠和锂存储的新型阳极材料。
CrPO as a Novel Anode Material for Sodium and Lithium Storage.
作者信息
Wang Shuo, Zhu Tianyuan, Chen Fei, Ding Xiang, Hu Qiao, Liao Jiaying, He Xiaodong, Chen Chunhua
机构信息
CAS Key Laboratory of Materials for Energy Conversions, Department of Materials Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei 230026, China.
出版信息
Materials (Basel). 2020 Jul 14;13(14):3139. doi: 10.3390/ma13143139.
The development of new appropriate anode material with low cost is still main issue for sodium-ion batteries (SIBs) and lithium-ion batteries (LIBs). Here, CrPO with an in-situ formed carbon layer has been fabricated through a facile solid-state method and its storage performance in SIBs and LIBs has been reported first. The CrPO@C delivers 238 mA h g and 717 mA h g at 0.05 A g in SIBs and LIBs, respectively. A capacity of 194 mA h g is achieved in SIBs after 300 cycles at 0.1 A g with a high capacity retention of 92.4%. When tested in LIBs, 351 mA h g is maintained after 600 cycles at 0.1 A g. The carbon coating layer improves the conductivity and reduces the side reaction during the electrochemical process, and hence improves the rate performance and enhances the cyclic stability.
开发低成本的新型合适负极材料仍然是钠离子电池（SIBs）和锂离子电池（LIBs）的主要问题。在此，通过简便的固态方法制备了具有原位形成碳层的CrPO，并首次报道了其在SIBs和LIBs中的存储性能。CrPO@C在SIBs和LIBs中，在0.05 A g时的放电容量分别为238 mA h g和717 mA h g。在SIBs中，以0.1 A g进行300次循环后，容量达到194 mA h g，高容量保持率为92.4%。在LIBs中测试时，以0.1 A g进行600次循环后，容量保持在351 mA h g。碳涂层提高了导电性，减少了电化学过程中的副反应，从而改善了倍率性能并增强了循环稳定性。
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