Template-engaged synthesis of spinel-layered Li1.5MnTiO4+δ nanorods as a cathode material for Li-ion batteries

被引：9

作者：

Ngoc Hung Vu ^{[1
]}

Unithrattil, Sanjith ^{[1
]}

Van Hien Hoang ^{[1
]}

Chun, Sangeun ^{[2
]}

Im, Won Bin ^{[1
]}

机构：

[1] Chonnam Natl Univ, Sch Mat Sci & Engn & Optoelect Convergence Res Ct, 77 Yongbong Ro, Gwangju 61186, South Korea

[2] Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea

来源：

JOURNAL OF POWER SOURCES | 2017年 / 355卷

基金：

新加坡国家研究基金会;

关键词：

LiMnTiO4; Nanorod; Template; Spinel framework; Li-ion battery; HIGH-CAPACITY; ELECTROCHEMICAL PERFORMANCE; MAGNETIC-PROPERTIES; LIMNTIO4; SPINEL; LIMN2O4; AL; CO;

D O I：

10.1016/j.jpowsour.2017.04.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Spinel-layered composites of Li1.5MnTiO4+delta were studied for their use as high-energy, low-cost, and environmentally benign cathode materials. The bulk particles showed an attractive specific capacity of up to 250 mAh g(-1) at C/10. To improve the performance of this cathode at a high C-rate, a spinel-layered Li1.5MnTiO4+delta nanorod was successfully synthesized using a beta-MnO2 nanorod template. The nanorod, which had an average diameter of 200 nm and a length of 1 gm, showed specific capacity as high as the bulk particle at C/10. However, owing to a one-dimensional nanostructure with a large effective contact area for Li+ diffusion, the nanorod sample exhibited enhanced capacities 11% (170 mAh g(-1)) and 167% higher (80 mAh g(-1)) at 1C and 10C rates, respectively, compared to the bulk particles. Moreover, both samples showed good cycle stability and capacity retention of over 85% after 100 cycles at 1C. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：134 / 139

页数：6

共 26 条

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