Improved reversible dehydrogenation performance of MgH2 by the synergistic effects of porous boron nitride and NbF5

时间:2020-07-07作者:浏览量:281


Improved reversible dehydrogenation performance of MgH2 by the synergistic effects of porous boron nitride and NbF5

作者:Zhu, L (Zhu, Lei)[ 1,2 ] ; Liao, YX (Liao, Yanxin)[ 1 ] ; Zhong, YJ (Zhong, Yujie)[ 3,4 ] ; Cui, J (Cui, Jing)[ 1 ] ; Wang, DS (Wang, Desen)[ 5 ] ; Wang, KK (Wang, Kuikui)[ 1,4 ]


JOURNAL OF ENERGY STORAGE


卷: 29

文献号: 101418


DOI: 10.1016/j.est.2020.101418


出版年: JUN 2020


文献类型:Article


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摘要

In this work, porous boron nitride (pBN) and NbF5 were used to improve the hydrogen storage performance of magnesium hydride (MgH2), especially the reversibility and dehydrogenation kinetics. We also carried out a series of control experiments to optimize the sample preparation method and addition amount of pBN. Comparing with the pristine MgH2 system, the as-prepared MgH2/NbF5@pBN sample exhibits promoting dehydrogenation kinetics. And it rapidly began to release hydrogen from around 230 degrees C, which was 140 degrees C lower. Moreover, it took 10 min during all the dehydrogenation process. A series of phase and chemical state analyses was used to study the enhanced effects of NbF5@pBN on the reversible hydrogen storage performance of MgH2. And the study demonstrates pBN is an effective additive as confinement medium and catalysis of the surface dangling-bond for improving the reversible dehydrogenation of MgH2. NbF5 could also act as catalysts. Therefore, the prominently improved dehydrogenation performance of MgH2 should be ascribed to a synergistic effect of nanoconfinement and catalysis.


关键词

作者关键词:Kinetics; Magnesium hydride; Porous boron nitride; Nanoconfinement; Catalysis


KeyWords Plus:HYDROGEN STORAGE PERFORMANCE; 2LIBH(4)-MGH2 COMPOSITE; MAGNESIUM HYDRIDE; SORPTION KINETICS; CATALYTIC-ACTIVITY; CARBON; NANOPARTICLES; DESORPTION; NANO; DESTABILIZATION


作者信息

通讯作者地址: Wang, KK (通讯作者)


显示更多Qingdao Univ, Coll Mat Sci & Engn, Lab New Fiber Mat & Modern Text, Inst Mat Energy & Environm,Growing Basis State Ke, Qingdao 266071, Peoples R China.

通讯作者地址: Wang, KK (通讯作者)

显示更多South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China.

地址:


显示更多[ 1 ]‎ Qingdao Univ, Coll Mat Sci & Engn, Lab New Fiber Mat & Modern Text, Inst Mat Energy & Environm,Growing Basis State Ke, Qingdao 266071, Peoples R China

显示更多[ 2 ]‎ Qingdao Univ, Affiliated Hosp, Canc Inst, Qingdao, Peoples R China

显示更多[ 3 ]‎ Xian Shiyou Univ, Sch Mat Sci & Engn, Xian 710065, Peoples R China

显示更多[ 4 ]‎ South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China

      [ 5 ]‎ Tanfang Cent Sch, Qingzhou 262500, Peoples R China

电子邮件地址:kkwang@qdu.edu.cn


基金资助致谢

基金资助机构显示详情授权号

National Natural Science Foundation of China


51801108

Key Research and Development Program of Shandong Province

2019GGX103048

China Postdoctoral Science Foundation


2016M592138

2017M610409

Qingdao Postdoctoral Applied Research Project

2016018

Open Fund of the Guangdong Provincial Key Laboratory of Advance Energy Storage Materials

2017B030314010

World-Class Discipline Program  

Taishan Scholar's Advantageous and Distinctive Discipline Program of Shandong Province  

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出版商

ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS


期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Energy & Fuels


Web of Science 类别:Energy & Fuels