The effects of ball milling and nanometric nickel additive on the hydrogen desorption from lithium borohydride and manganese chloride (3LiBH4 + MnCl2) mixture

被引:35
作者
Varin, R. A. [1 ]
Zbroniec, L. [1 ]
机构
[1] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Hydrogen storage materials; Complex borohydride; Ball milling; Nano nickel additives; X-ray diffraction; ACTIVATION SYNTHESIS MCAS; MAGNESIUM; STORAGE;
D O I
10.1016/j.ijhydene.2010.01.137
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A mixture of [3LiBH(4) + MnCl2] was processed by high energy ball milling in ultra-high purity hydrogen gas for 0.5 and 1 h. The XRD patterns of milled powders show the sole diffraction peaks of LiCl. The reaction occurring during milling of [3LiBH(4) + MnCl2] seems to have all characteristics of the metathesis-type reactions occurring between borohydrides (LiBH4 and NaBH4) and metal chlorides (MCln) induced in a solid state by a mechano-chemical activation synthesis (MCAS). Under pressure of 0.1 MPa H-2 (atmospheric) the ball milled [3LiBH(4) + MnCl2] mixture is able to desorb similar to 4.0 wt.% H-2 at 100 degrees C within 21,000 s and similar to 4.5 wt.% H-2 at 120 and 200 degrees C within 8000 s and 4000 s, respectively. The addition of n-Ni with SSA = 60.5 m(2)/g allows desorption of similar to 3.7wt.%H-2 within 8,700 s at 100 degrees C. This is one of the highest H-2 desorption capacities obtained for a complex hydride at 100 degrees C under atmospheric pressure of H-2 taking into account the fact that the microstructure contains some amount of a useless LiCl constituent. The activation energy of hydrogen desorption for a ball milled undoped [3LiBH(4) + MnCl2] is similar to 102 kJ/mol and similar to 98 and 92 kJ/mol after doping with 5 wt.% of nanometric Ni having specific surface area (SSA) of 9.5 and 60.5 m(2)/g, respectively. After volumetric desorption from 100 to 450 degrees C the XRD patterns show only LiCl. The n-Ni additive slightly lowers the total quantity of desorbed H-2. Re-absorption tests, under pressure of 10 MPa H-2 at 200 degrees C, show that the system is, most likely, irreversible. Flammability studies show that the ball milled [3LiBH(4) + MnCl2] mixture can be ignited by scraping the cylinder walls with a metal tool as well when it is thrown and dispersed in air in a powder form. It also reacts violently in contact with water and a nitric acid. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:3588 / 3597
页数:10
相关论文
共 18 条
[1]   UNIVERSAL HIGH-PERFORMANCE BALL-MILLING DEVICE AND ITS APPLICATION FOR MECHANICAL ALLOYING [J].
CALKA, A ;
RADLINSKI, AP .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 134 :1350-1353
[2]  
CALKA A, Patent No. 5383615
[3]  
CALKA A, Patent No. 9104810
[4]  
Calka A, 2001, INT S PROC FABR ADV, P263
[5]   Nano-Ni doped Li-Mn-B-H system as a new hydrogen storage candidate [J].
Choudhury, Pabitra ;
Srinivasan, Sesha S. ;
Bhethanabotla, Venkat R. ;
Goswami, Yogi ;
McGrath, Kimberly ;
Stefanakos, Elias K. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (15) :6325-6334
[6]   Mechanochemical synthesis and thermal decomposition of zinc borohydride [J].
Jeon, Eun ;
Cho, YoungWhan .
JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 422 (1-2) :273-275
[7]   Mechanochemical preparation and investigation of properties of magnesium, calcium and lithium-magnesium alanates [J].
Mamatha, A ;
Bogdanovic, B ;
Felderhoff, M ;
Pommerin, A ;
Schmidt, W ;
Schüth, F ;
Weidenthaler, C .
JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 407 (1-2) :78-86
[8]   Thermodynamical stabilities of metal-borohydrides [J].
Nakamori, Y. ;
Li, H. -W. ;
Kikuchi, K. ;
Aoki, M. ;
Miwa, K. ;
Towata, S. ;
Orimo, S. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 446 (296-300) :296-300
[9]   Nanocatalyst doping of Zn(BH4)2 for on-board hydrogen storage [J].
Srinivasan, Sesha ;
Escobar, Diego ;
Jurczyk, Michael ;
Goswami, Yogi ;
Stefanakos, Elias .
JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 462 (1-2) :294-302
[10]   Mechano-chemical activation synthesis (MCAS) of disordered Mg(BH4)2 using NaBH4 [J].
Varin, R. A. ;
Chiu, Ch. ;
Wronski, Z. S. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 462 (1-2) :201-208