Enhanced hydrogen generation performance of CaMg2-based materials by ball milling
作者:Ma, ML (Ma, Miaolian)[ 1,2 ] ; Chen, K (Chen, Kang)[ 2 ] ; Jiang, J (Jiang, Jun)[ 2 ] ; Yang, XS (Yang, Xusheng)[ 3,4 ] ; Wang, H (Wang, Hui)[ 2 ] ; Shao, HY (Shao, Huaiyu)[ 5 ] ; Liu, JW (Liu, Jiangwen)[ 2 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 2,6 ]
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卷: 7 期: 4 页: 918-929
DOI: 10.1039/c9qi01299k
出版年: FEB 21 2020
文献类型:Article
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摘要
Non-catalytic hydrolysis of CaMg2-based materials (abbreviated as CaMg2, CaMg2-0.1Ni, H-CaMg2, and H-CaMg2-0.1Ni hereinafter) fabricated by ball milling for hydrogen supply has been investigated in the present work. With respect to the as-melted counterparts, it is found that both milled CaMg2 and H-CaMg2-based samples can significantly enhance the hydrolysis performance via adjusting the milling durations. In particular, 0.5 h-milled CaMg2 and 3 h-milled H-CaMg2 exert optimal kinetics at ambient temperature, delivering a hydrogen yield of 539 mL g(-1) within 2 h and 1439 mL g(-1) of H-2 within only 3 min, respectively. In addition, the further results indicate that the hydrogen uptake of CaMg2 can be accelerated by doping with the Ni element, giving rise to considerably enhanced hydrolytic dynamics, as opposed to a limited promotion of the hydrolysis of the CaMg2 alloy. For example, the hydrogen yield of H-CaMg2-0.1Ni increases from 853 to 1147 mL g(-1) H-2 in 5 min with hydrogenation durations ranging from 0.5 to 1.5 h, much higher than the values (598-954 mL g(-1) H-2) of H-CaMg2 under the same conditions. More specifically, the 3 h-milled H-CaMg2 sample also demonstrates excellent cryogenic hydrolysis kinetics, achieving a hydrogen yield of 1332 mL g(-1) H-2 within 15 min at 0 degrees C. In comparison with the conventional hydrogenation of pristine CaMg2 conducted at elevated temperature, a more feasible strategy is applied to realize its hydrogen uptake by ball milling with Ni under mild conditions. Expectedly, the hydrogen supply capacities of the hydrogenated samples are markedly enhanced, making them promising to achieve their wide applications in hydrogen energy areas in the future.
关键词
KeyWords Plus:STORAGE MATERIALS; COMPLEX HYDRIDES; HYDROLYSIS; ENERGY; REGENERATION; WATER; MAGNESIUM; KINETICS; SORPTION; MOS2
作者信息
通讯作者地址: Ouyang, LZ (通讯作者)
显示更多South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China.
通讯作者地址: Yang, XS (通讯作者)
显示更多Hong Kong Polytech Univ, Dept Ind & Syst Engn, Adv Mfg Technol Res Ctr, Hung Hom,Kowloon, Hong Kong, Peoples R China.
通讯作者地址: Yang, XS (通讯作者)
显示更多Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China.
通讯作者地址: Shao, HY (通讯作者)
显示更多Univ Macau, IAPME, Minist Educ, Joint Key Lab, Macau, Peoples R China.
通讯作者地址: Ouyang, LZ (通讯作者)
China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China.
地址:
显示更多[ 1 ] Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China
显示更多[ 2 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
显示更多[ 3 ] Hong Kong Polytech Univ, Dept Ind & Syst Engn, Adv Mfg Technol Res Ctr, Hung Hom,Kowloon, Hong Kong, Peoples R China
显示更多[ 4 ] Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China
显示更多[ 5 ] Univ Macau, IAPME, Minist Educ, Joint Key Lab, Macau, Peoples R China
[ 6 ] China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China
电子邮件地址:xsyang@polyu.edu.hk; hshao@um.edu.mo; meouyang@scut.edu.cn
基金资助致谢
基金资助机构显示详情授权号
National Key R&D Program of China
2018YFB1502101
Fundamental Research Funds for the Central Universities
JZ2019HGBZ0185
National Natural Science Foundation of China
NSFC51621001
National Natural Science Foundation of China
51771075
51701171
Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2014)
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出版商
ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry
Web of Science 类别:Chemistry, Inorganic & Nuclear