Mechanism of fast hydrogen generation from pure water using Al-SnCl2 and bi-doped Al-SnCl2 composites

	Mechanism of fast hydrogen generation from pure water using Al-SnCl2 and bi-doped Al-SnCl2 composites
	Xu, Fen 1; Sun, Lixian 1; Lan, Xiaofen 2; Chu, Hailiang 1; Sun, Yujia 4; Zhou, Huaiying 1; Li, Fen 3; Yang, Lini 5; Si, Xiaoliang 3; Zhang, Jian 3
刊名	international journal of hydrogen energy
	2014-04-04
卷号	39 期号:11 页码:5514-5521
关键词	Al-SnCl2 composite Bi-doped Al-SnCl2 composite Mechanism of hydrogen generation Fast hydrogen production from water
通讯作者	孙立贤
英文摘要	the mechanism of fast hydrogen generation from pure water using selectively activated al-sncl2 composites was elucidated with the help of experimental data using combined xrd, sem, edx, dsc and calorimetric techniques. it is found that h-2 is produced from two different but simultaneous routes specific to the al-sncl2 composite stoichiometry achieved after ball milling the precursor that readily yields, besides the excess of al, sn and alcl3. hydrogen is simultaneously produced from the reaction of the so-formed al-sn alloy with water, and from the reaction of the in situ generated alcl3 with water, yielding hcl (protons) that further again react with al, both reactions significantly increasing the hydrogen production rate. the effect of bi on the hydrogen conversion yield on the al-sncl2 composite was also investigated. the electrochemical activity of al is further enhanced by doping bi into al-sncl2 composite. meanwhile, dft (density functional theory) calculations show that bi micro domains present onto the al (111) crystallite faces of the composite significantly reduce the adsorption energy of the oh groups while, mg- or cr-doped al-sncl2 composites increase this adsorption energy. the mulliken charge analysis indicates that bi leads to less electron transport between al and o atoms (weaker interaction) than pristine al (111) surface. bi therefore contributes to inhibit the formation of the hydroxyls on the al metal surface, thereby allowing the clean metal to continuously react with water. copyright (c) 2014, hydrogen energy publications, llc. published by elsevier ltd. all rights reserved.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; electrochemistry ; energy & fuels
研究领域[WOS]	chemistry ; electrochemistry ; energy & fuels
关键词[WOS]	fuel-cell ; aluminum ; hydrolysis ; activation ; corrosion ; mixture ; alloys ; energy
收录类别	SCI
语种	英语
WOS记录号	WOS:000334977900004
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/143861]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Peoples R China 2.Liaoning Normal Univ, Coll Chem & Chem Engn, Dalian 116029, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian 116023, Peoples R China 4.Texas A&M Univ, College Stn, TX 77843 USA 5.Liaoning Univ, Coll Chem, Senyang 110036, Peoples R China 6.Univ Haute Alsace, ENSCMu, Lab LPI GSEC, F-68093 Mulhouse, France
推荐引用方式 GB/T 7714	Xu, Fen,Sun, Lixian,Lan, Xiaofen,et al. Mechanism of fast hydrogen generation from pure water using Al-SnCl2 and bi-doped Al-SnCl2 composites[J]. international journal of hydrogen energy,2014,39(11):5514-5521.
APA	Xu, Fen.,Sun, Lixian.,Lan, Xiaofen.,Chu, Hailiang.,Sun, Yujia.,...&Gabelica, Zelimir.(2014).Mechanism of fast hydrogen generation from pure water using Al-SnCl2 and bi-doped Al-SnCl2 composites.international journal of hydrogen energy,39(11),5514-5521.
MLA	Xu, Fen,et al."Mechanism of fast hydrogen generation from pure water using Al-SnCl2 and bi-doped Al-SnCl2 composites".international journal of hydrogen energy 39.11(2014):5514-5521.