PreparationandcatalyticeffectofporousCo3O4onthehydrogenstoragepropertiesofaLi-B-N-Hsystem

被引：0

作者：

You Li ^{[1
]}

Yi Zhang ^{[1
,2
]}

Mingxia Gao ^{[1
]}

Hongge Pan ^{[1
]}

Yongfeng Liu ^{[1
,3
]}

机构：

[1] State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and Engineering, Zhejiang University

[2] Center of Material Science, National University of Defense Technology

[3] Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University

来源：

Progress in Natural Science:Materials International | 2017年 / 27卷 / 01期

关键词：

Hydrogen storage; Complex hydrides; Borohydrides; Amides; Dehydrogenation;

D O I：

暂无

中图分类号：

TB34 [功能材料]; O643.36 [催化剂];

学科分类号：

080501 ; 081705 ;

摘要：

A porous Co3O4 with a particle size of 1–3 μm was successfully prepared by heating Co-based metal organic frameworks MOF-74（Co） up to 500 °C in air atmospheric conditions. The as-prepared porous Co3O4 significantly reduced the dehydrogenation temperatures of the LiBH4-2LiNH2 system and improved the purity of the released hydrogen. The LiBH4-2LiNH2-0.05/3Co3O4 sample started to release hydrogen at 140 °C and released hydrogen levels of approximately 9.7 wt% at 225 °C. The end temperature for hydrogen release was lowered by 125 °C relative to that of the pristine sample. Structural analyses revealed that the as-prepared porous Co3O4 is in-situ reduced to metallic Co, which functions as an active catalyst, reducing the kinetic barriers and lowering the dehydrogenation temperatures of the LiBH4-2LiNH2 system. More importantly, the porous Co3O4-containing sample exhibited partially improved reversibility for hydrogen storage in the LiBH4-2LiNH2 system.

引用

页码：132 / 138

页数：7