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Spinel-layered Li2MnTiO4+z nanofibers as cathode materials for Li-ion batteries

Title
Spinel-layered Li2MnTiO4+z nanofibers as cathode materials for Li-ion batteries
Author
임원빈
Keywords
LiMnTiO; Nanofibers; Electrospinning; Spinel framework; Li-ion battery
Issue Date
2020-05
Publisher
ELSEVIER
Citation
SOLID STATE SCIENCES, v. 103, article no. 106178
Abstract
In this study, we propose composite materials based on the Li-Mn-Ti-O system to develop low cost and environmentally benign cathode materials for Li-ion batteries. Specifically, spinel-layered Li2MnTiO4+z (0.5LiMnTiO(4)center dot 0.5Li(2)Mn(0.5)Ti(0.5)O(3)) material is studied with the aim to increase the operating voltage of the cathode. In contrast, to increase the capacity as well as rate capability of the cathode, an electrospinning technique is employed to synthesize uniform nanofibers with diameters of approximately 80 nm and a length of 15 mu m. The hetero- and one-dimensional structure of the prepared sample facilitate Li+ transport by shortening the diffusion length for the ions. Consequently, high capacities of 210 (average operating voltage similar to 3.1 V) and 150 mAh g(-1) at C/10 and 1C rates, respectively, are obtained.
URI
https://www.sciencedirect.com/science/article/pii/S1293255820300716?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/167111
ISSN
1293-2558; 1873-3085
DOI
10.1016/j.solidstatesciences.2020.106178
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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