Zhang Yanli, Zhang Qiang, He Xiangming, Wang Li, Wang Jingxin, Dong Liangliang, Xie Yingpeng, Hao Yongsheng
School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China.
Materials (Basel). 2023 Feb 8;16(4):1437. doi: 10.3390/ma16041437.
Due to its quite high theoretical specific-energy density, FeF nanomaterial is a good candidate for the cathode material of high-energy lithium-ion batteries. The preparation of FeF nanomaterial is very important for its application. At present, the preparation process mostly involves high temperature and an inert atmosphere, which need special or expensive devices. It is very important to seek a low-temperature and mild method, without the need for high temperature and inert atmosphere, for the preparation and following application of FeF nanomaterial. This article reports a novel sugar-assisted solvothermal method in which the FeF∙3HO precursor is reduced into FeF nanomaterial by carbon derived from the dehydration and condensation of sugar. The obtained FeF nanomaterials are irregular granules of about 30 nm, with inner pores inside each granule. Electrochemical tests show the FeF nanomaterial's potential as a lithium-ion battery cathode material.
由于其理论比能量密度相当高，FeF纳米材料是高能锂离子电池阴极材料的理想候选者。FeF纳米材料的制备对其应用非常重要。目前，制备过程大多涉及高温和惰性气氛，这需要特殊或昂贵的设备。寻求一种低温温和的方法，无需高温和惰性气氛，对于FeF纳米材料的制备及后续应用非常重要。本文报道了一种新型的糖辅助溶剂热法，其中FeF∙3HO前驱体通过糖脱水缩合产生的碳还原为FeF纳米材料。所获得的FeF纳米材料是约30nm的不规则颗粒，每个颗粒内部有内孔。电化学测试显示了FeF纳米材料作为锂离子电池阴极材料的潜力。
