Two-dimensional layered lithium lanthanum titanium oxide/graphene-like composites as electrodes for lithium-ion batteries

被引：4

作者：

Gu, Bo ^{[1
,2
,3
]}

Zhan, Chenyang ^{[2
,3
,4
]}

Liu, Bing Heng ^{[2
,3
,4
]}

Wang, Gang ^{[2
,3
,4
]}

Zhang, Qian ^{[1
]}

Zhang, Ming ^{[2
,3
,4
]}

Shen, Zhongrong ^{[2
,3
,4
]}

机构：

[1] Jiangxi Univ Sci & Technol, Key Lab Power Batteries & Relat Mat, Fac Mat Met & Chem, Ganzhou 341000, Peoples R China

[2] Chinese Acad Sci, CAS Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Peoples R China

[3] Chinese Acad Sci, Fujian Key Lab Nanomat, Fujian Inst Res Struct Matter, Fuzhou 350002, Peoples R China

[4] Chinese Acad Sci, Haixi Inst, Xiamen Inst Rare Earth Mat, Xiamen Key Lab Rare Earth Photoelectr Funct Mat, Xiamen 361021, Peoples R China

来源：

DALTON TRANSACTIONS | 2022年 / 51卷 / 18期

基金：

中国国家自然科学基金;

关键词：

CARBON NANOSHEETS; ELECTROCHEMICAL PERFORMANCE; ANODE MATERIALS; ENERGY-STORAGE; K2LA2TI3O10; TIO2; FABRICATION; EXTRACTION; TITANATES; GROWTH;

D O I：

10.1039/d2dt00751g

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Perovskite-structured (ABO(3)) lithium lanthanum titanate (LixLa(2-x)/3TiO3, LLTO) is widely used in all solid state lithium ion batteries due to its high ionic conductivity. In this study, a two-dimensional LLTO nanosheet/graphene (LLTO/C) nanosheet composite has been designed as an electrode material for lithium-ion batteries (LIBs). LLTO/C not only exhibits the ionic conductivity properties of perovskite-type LLTO, but the graphene between the layers of LLTO nanosheets also endows the material with additional electronic conductivity. Moreover, LLTO@C-600 exhibits an excellent rate capability as the electrode for delithiation with a high specific capacity of 350 mA h g(-1) at 20 mA g(-1), and 70% of the specific capacity can be maintained at 1.0 A g(-1) after 800 cycles. The excellent electrochemical performances can be attributed to the superior interficial capacitive Li+ storage capability.

引用

页码：7076 / 7083

页数：8

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