Doped Lithium Titanates and their Composites with Carbon Nanotubes as Anodes for Lithium-Ion Batteries

被引：1

作者：

Stenina, I. A. ^{[1
]}

Kulova, T. L. ^{[2
]}

Yaroslavtsev, A. B. ^{[1
]}

机构：

[1] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia

[2] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia

来源：

RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2024年 / 69卷 / 11期

关键词：

lithium titanate; doping; CNTs; lithium-ion batteries; ENERGY-STORAGE; ELECTROCHEMICAL PROPERTIES; LI4TI5O12; PERFORMANCE; CAPACITY; DENSITY;

D O I：

10.1134/S0036023624601855

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Lithium titanates Li4+xTi5-xMxO12 (M = Sc, Ga, Al, Cr; x = 0, 0.05, 0.1, 0.15) and their composites with carbon nanotubes were synthesized by the sol-gel method and characterized using X-ray powder diffraction, scanning electron microscopy, impedance spectroscopy, and Li-7 MAS NMR spectroscopy; their electrochemical performance was studied. Doping with trivalent cations leads to a decrease in the mobility of lithium ions in Li4+xTi5-xMxO12, which indicates that lithium transport through vacancies predominates in these materials. The best electrochemical characteristics were found for the Li4+xTi5-xMxO12 composites with carbon nanotubes.

引用

页码：1762 / 1769

页数：8

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