Influence of MnO2 polymorphism form on MnO2/Ag2O hydrogen getter

被引：18
作者：
Galliez, Kevin [1 ,2 ]
Deniard, Philippe [2 ]
Lambertin, David [1 ]
Jobic, Stephane [2 ]
Bart, Florence [1 ]
机构：
[1] CEA, DEN, DTCD SPDE Marcoule LP2C, F-30207 Bagnols Sur Ceze, France
[2] Univ Nantes, CNRS, Inst Mat Jean Rouxel IMN, F-44322 Nantes 3, France
来源：
JOURNAL OF NUCLEAR MATERIALS | 2013年 / 438卷 / 1-3期
关键词：
MANGANESE OXIDE; GAMMA-MNO2; INSERTION; SILVER; DIFFRACTION; HOLLANDITE; OXIDATION; LITHIUM;
D O I：
10.1016/j.jnucmat.2013.03.053
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate the influence of MnO2 polymorphism form on MnO2/Ag2O hydrogen getter. The results show that the performances strongly depend on the polymorphism form of manganese oxide. The nsutite gamma-MnO2 phase, which consists of a random intergrowth of MnO2-ramsdellite and MnO2-pyrolusite building blocks, shows the more promising performances to trap H-2 via the formation of hydroxyl groups. This observation is especially relevant for compounds with a low pyrolusite/ramsdellite ratio and a high rate of microtwinnings. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：261 / 267
页数：7
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