Sun Lixia, Hu Jiayan, Bai Weiqi, Mao Wutao, Song Zhongcheng
School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou, China.
Front Chem. 2023 Jun 1;11:1189866. doi: 10.3389/fchem.2023.1189866. eCollection 2023.
The hunt for a higher power storage, relatively inexpensive, non-polluting battery technology is currently a pressing issue because of the rapid growth of the worldwide economic and the progressively significant environmental pollution. Among the possible nanomaterials for rechargeable batteries that can have heteroatoms applied to it in order to improve its electrochemical behavior is LiTi(PO). Carbon-coated Mn-doped LiMnTi(PO) materials was synthesized by spray drying method. The material was characterized by XRD, SEM, TEM, BET, TGA et al. Crystal data refinement results by Rietveld method showed that the symmetry space group is Pbcn.The lattice parameters of LiMnTi(PO) are = 11.9372 Å, = 8.5409 Å, = 8.5979 Å, = = = 90°, = 876.59 Å and = 4). Rietveld refinement was performed, and the confidence factors are Rwp = 11.79%, Rp = 9.14%, and χ = 1.425. It was exhibited that LMTP0.1/CA-700 material has good crystallinity. Testing the cells with LAND test procedure (200 mA/g current density for 200 cycles), the LMTP0.1/CA-700 material has a discharge specific capacity of about 65 mAh/g. The capacity decayed by only 3% during the cycle. It has some potential application values as cathode of lithium ion battery in the future.
由于全球经济的快速增长以及环境污染日益严重，寻找一种更高能量存储、相对廉价且无污染的电池技术目前是一个紧迫的问题。在可用于可充电电池的可能的纳米材料中，为了改善其电化学性能，可以在其中应用杂原子的是LiTi(PO)。通过喷雾干燥法合成了碳包覆的Mn掺杂LiMnTi(PO)材料。通过XRD、SEM、TEM、BET、TGA等对该材料进行了表征。用Rietveld方法进行晶体数据精修结果表明对称空间群为Pbcn。LiMnTi(PO)的晶格参数为 = 11.9372 Å， = 8.5409 Å， = 8.5979 Å， = = = 90°， = 876.59 Å 且 = 4)。进行了Rietveld精修，置信因子为Rwp = 11.79%，Rp = 9.14%，χ = 1.425。结果表明LMTP0.1/CA - 700材料具有良好的结晶度。采用LAND测试程序（电流密度为200 mA/g，循环200次）对电池进行测试，LMTP0.1/CA - 700材料的放电比容量约为65 mAh/g。在循环过程中容量仅衰减了3%。它在未来作为锂离子电池的正极具有一定的潜在应用价值。
