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