Preparation and catalytic effect of porous Co3O4 on the hydrogen storage properties of a Li-B-N-H system

被引：17

作者：

Li, You ^{[1
,2
]}

Zhang, Yi ^{[1
,2
,3
]}

Gao, Mingxia ^{[1
,2
]}

Pan, Hongge ^{[1
,2
]}

Liu, Yongfeng ^{[1
,2
,4
]}

机构：

[1] Zhejiang Univ, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

[3] Zhejiang Univ, Ctr Mat Sci, Changsha 410073, Hunan, Peoples R China

[4] Nankai Univ, Key Lab Adv Energy Mat Chem, Minist Educ, Tianjin 300071, Peoples R China

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2017年 / 27卷 / 01期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Hydrogen storage; Complex hydrides; Borohydrides; Amides; Dehydrogenation; LITHIUM BOROHYDRIDE; LIBH4; DESORPTION; COMPOSITE; RELEASE; ENERGY; LIB0.33N0.67H2.67; REVERSIBILITY; EFFICIENT; FE;

D O I：

10.1016/j.pnsc.2016.12.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A porous Co2O (4) with a particle size of 1-3 mu m was successfully prepared by heating Co-based metal organic frameworks MOF-74(Co) up to 500 degrees C in air atmospheric conditions. The as-prepared porous Co3O4 significantly reduced the dehydrogenation temperatures of the LiBH4-2LiNH(2) system and improved the purity of the released hydrogen. The LiBH4-2LiNH(2)-0.05/3Co(3)O(4) sample started to release hydrogen at 140 C-circle and released hydrogen levels of approximately 9.7 wt% at 225 degrees C. The end temperature for hydrogen release was lowered by 125 degrees 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 system. More importantly, the porous Co3O4-containing sample exhibited partially improved reversibility for hydrogen storage in theLiBH(4)-2LiNH(2) system.

引用

页码：132 / 138

页数：7

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