AUTHOR=Sun Lixia , Hu Jiayan , Bai Weiqi , Mao Wutao , Song Zhongcheng 

TITLE=Synthesis and electrochemical properties of Mn-doped Li2Mn0.1Ti1.9(PO4)3 materials

JOURNAL=Frontiers in Chemistry

VOLUME=11

YEAR=2023

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2023.1189866

DOI=10.3389/fchem.2023.1189866

ISSN=2296-2646

ABSTRACT=<p>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 Li<sub>x</sub>Ti<sub>y</sub>(PO<sub>4</sub>)<sub>3</sub>. Carbon-coated Mn-doped Li<sub>2</sub>Mn<sub>0.1</sub>Ti<sub>1.9</sub>(PO<sub>4</sub>)<sub>3</sub> 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 Li<sub>2</sub>Mn<sub>0.1</sub>Ti<sub>1.9</sub>(PO<sub>4</sub>)<sub>3</sub> are <italic>a</italic> = 11.9372 Å, <italic>b</italic> = 8.5409 Å, <italic>c</italic> = 8.5979 Å, <italic>α</italic> = <italic>β</italic> = <italic>γ</italic> = 90°, <italic>V</italic> = 876.59 Å<sup>3</sup> and <italic>Z</italic> = 4). Rietveld refinement was performed, and the confidence factors are Rwp = 11.79%, Rp = 9.14%, and χ<sup>2</sup> = 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.</p>