In situ neutron diffraction study of Li insertion in Li4Ti5O12

被引：63

作者：

Colin, Jean-Francois ^{[1
]}

Godbole, Vikram ^{[1
]}

Novak, Petr ^{[1
]}

机构：

[1] Paul Scherrer Inst, Electrochem Lab, CH-5232 Villigen, Switzerland

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 06期

基金：

瑞士国家科学基金会;

关键词：

In situ diffraction; Li-ion batteries; Titanate; Neutrons; CELL;

D O I：

10.1016/j.elecom.2010.03.038

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Developing an efficient in situ electrochemical cell for neutron diffraction of electrode materials for Li-ion batteries remains a major technical challenge. We recently published the results of the first experiment carried out with such a cell developed by our group. In order to improve the quality of data we optimized the preparation of the electrode, introduced a gradient in the carbon content, and controlled the porosity. Li4Ti5O12 was used as a model material to demonstrate the advantages of the new approach. 10 diffractograms were recorded in situ during the first electrochemical cycle and then refined to obtain the evolution of unit cell parameters, oxygen position, and of the quantitative ratio between Li4Ti5O12 and Li7Ti5O12. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：804 / 807

页数：4

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