Citation: RAO Chong-Shun, ZHANG Xin, YANG Jing-Hao, LIU Qian, ZHOU Yi-Fan. Effect of C₁₀H₁₀Cl₂Ti on Hydrogen Storage Properties of 6LiBH₄-CaH₂-3MgH₂ System[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(12): 2233-2242. doi: 10.11862/CJIC.2019.275 shu

Effect of C₁₀H₁₀Cl₂Ti on Hydrogen Storage Properties of 6LiBH₄-CaH₂-3MgH₂ System

1.
Henan Key Laboratory of Advanced Magnesium Alloy, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
2.
State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
3.
Teaching and Research Office, PLA Army Academy of Artillery and Air Defense(Zhengzhou Campus), Zhengzhou 450000, China

Corresponding author: ZHOU Yi-Fan, zhouyf@zzu.edu.cn
Received Date: 27 April 2019
Revised Date: 25 September 2019

Figures(15)

C₁₀H₁₀Cl₂Ti was selected as an additive to improve the hydrogen storage properties of the 6LiBH₄-CaH₂-3MgH₂ sample, with optimum hydrogen storage performances by 5%(w/w) addition. The onset and ending temperatures for the dehydrogenation of the sample were 30 and 25℃, which were lower than those of the pristine sample, and its reversible hydrogen storage capacity was about 8.1%(w/w). The desorption rate of the C₁₀H₁₀Cl₂Ti-doped sample was 1.78 times faster than that of the pristine sample in the isothermal dehydrogenation mode at 360℃. The apparent activation energy (Ea) of the two-step reaction was calculated to be 131.4 and 138.8 kJ·mol^-1, which were 18.6% and 15.8% lower than the pristine sample, respectively. Further XPS analyses indicate that the multivalence state Ti compounds generate during thermal decomposition of C₁₀H₁₀Cl₂Ti, which plays an important role to improve the hydrogen storage properties of the 6LiBH₄-CaH₂-3MgH₂ system.
- hydrogen storage materials,
- C₁₀H₁₀Cl₂Ti,
- LiBH₄,
- dehydrogenation-hydrogenation properties,
- kinetics
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Effect of C₁₀H₁₀Cl₂Ti on Hydrogen Storage Properties of 6LiBH₄-CaH₂-3MgH₂ System