High lithium ion conductivity of Li7La3Zr2O12 synthesized by solid state reaction

被引：34

作者：

Lee, Jae-Myung ^{[1
]}

Kim, Taeyoung ^{[1
]}

Baek, Seung-Wook ^{[1
]}

Aihara, Yuichi ^{[2
]}

Park, Youngsin ^{[1
]}

Kim, Yong-Il ^{[3
]}

Doo, Seok-Gwang ^{[1
]}

机构：

[1] Samsung Elect Co LTD, Samsung Adv Inst Technol, Samsung Ro 443803, Gyeonggi Do, South Korea

[2] Samsung Yokohama Res Inst, Osaka 5620036, Japan

[3] Korea Res Inst Stand & Sci, Taejon, South Korea

来源：

SOLID STATE IONICS | 2014年 / 258卷

关键词：

Lithium ion conductor; Garnet; Solid electrolyte; Magic angle spinning nuclear magnetic resonance; Rietveld refinement; Neutron powder diffraction; ELECTRODE MATERIALS; TRANSPORT-PROPERTIES; GARNETS; CONDUCTORS; AL; TEMPERATURE; TRANSITION; CONVERSION; BATTERIES; DISORDER;

D O I：

10.1016/j.ssi.2014.01.043

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：

A lithium ion conductor with the garnet-type structure, Li7La3Zr2O12 (LLZ), showing a high Li+ conductivity of 0.49 mS cm(-1) at 25 C, is synthesized via milling (500 rpm, 12 h) and following sintering at 1125 C for 20 h. The improved Li+ conductivity is attributed to the decrease of the particle size, the uniform distribution of particles before sintering, the high concentration of Li+ in the octahedral site (96h), and low occupancies of Li+ in the tetrahedral site (24d). Also, it is found that the cubic phase of LLZ is stabilized by a contamination of Al3+ ion into the LLZ lattice. The structural position of Al3+ is verified to be in the tetrahedral site (24d) by analyzing SEM images, MAS NMR, Pawley refinement using X-ray powder diffraction, and structural refinement using neutron powder diffraction data. (c) 2014 Elsevier B.V. All rights reserved.

引用

页码：13 / 17

页数：5

共 38 条

[31] Lithium batteries: Status, prospects and future [J].

Scrosati, Bruno ;

Garche, Juergen .

JOURNAL OF POWER SOURCES, 2010, 195 (09) :2419-2430

[32] Synthesis of garnet-type Li7-xLa3Zr2O12-1/2x and its stability in aqueous solutions [J].

Shimonishi, Yuta ;

Toda, Akiharu ;

Zhang, Tao ;

Hirano, Atsushi ;

Imanishi, Nobuyuki ;

Yamamoto, Osamu ;

Takeda, Yasuo .

SOLID STATE IONICS, 2011, 183 (01) :48-53

[33] Li6ALa2Nb2O12 (A = Ca, Sr, Ba):: A new class of fast lithium ion conductors with garnet-like structure [J].

Thangadurai, V ;

Weppner, W .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2005, 88 (02) :411-418

[34] The mechanism of Li-ion transport in the garnet Li5La3Nb2O12 [J].

van Wuellen, Leo ;

Echelmeyer, Thomas ;

Meyer, Hinrich-Wilhelm ;

Wilmer, Dirk .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2007, 9 (25) :3298-3303

[35]

Winter M, 1998, ADV MATER, V10, P725, DOI 10.1002/(SICI)1521-4095(199807)10:10<725::AID-ADMA725>3.0.CO

[36]

2-Z

[37] Low-temperature synthesis of Li7La3Zr2O12 with cubic garnet-type structure [J].

Xie, Hui ;

Li, Yutao ;

Goodenough, John B. .

MATERIALS RESEARCH BULLETIN, 2012, 47 (05) :1229-1232

[38] Mechanisms of Li+ transport in garnet-type cubic Li3+xLa3M2O12 (M = Te, Nb, Zr) [J].

Xu, Ming ;

Park, Min Sik ;

Lee, Jae Myung ;

Kim, Tae Young ;

Park, Young Sin ;

Ma, Evan .

PHYSICAL REVIEW B, 2012, 85 (05)

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