稀有金属(英文版)2024，Vol.43Issue(6) ：2671-2681.DOI:10.1007/s12598-023-02608-2

Single Ti atoms coupled with Ti-O clusters enable low temperature hydrogen cycling by sodium alanate

Zhuang-He Ren Xin Zhang Wen-Xuan Zhang Zhen-Guo Huang Li-Mei Yang Ya-Xiong Yang Zheng-Long Li Juan Li Wen-Ping Sun Ming-Xia Gao Hong-Ge Pan Yong-Feng Liu
稀有金属(英文版)2024，Vol.43Issue(6) ：2671-2681.DOI:10.1007/s12598-023-02608-2
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Single Ti atoms coupled with Ti-O clusters enable low temperature hydrogen cycling by sodium alanate

Zhuang-He Ren 1Xin Zhang 1Wen-Xuan Zhang 1Zhen-Guo Huang 2Li-Mei Yang 2Ya-Xiong Yang 3Zheng-Long Li 3Juan Li 4Wen-Ping Sun 1Ming-Xia Gao 1Hong-Ge Pan 5Yong-Feng Liu5
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作者信息

  • 1. State Key Laboratory of Silicon and Advanced Semiconductor Materials,Zhejiang University,Hangzhou 310027,China;School of Materials Science and Engineering,Zhejiang University,Hangzhou 310058,China
  • 2. School of Civil & Environmental Engineering,University of Technology Sydney,Sydney,2007 NSW,Australia
  • 3. Institute of Science and Technology for New Energy,Xi'an Technological University,Xi'an 710021,China
  • 4. College of Materials Science and Engineering,Zhejiang University of Technology,Hangzhou 310014,China
  • 5. State Key Laboratory of Silicon and Advanced Semiconductor Materials,Zhejiang University,Hangzhou 310027,China;School of Materials Science and Engineering,Zhejiang University,Hangzhou 310058,China;Institute of Science and Technology for New Energy,Xi'an Technological University,Xi'an 710021,China
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Abstract

Ti-based catalysts are known to improve the hydrogen storage performance of NaAlH4 by facilitating the dissociation/recombination of H-H and Al-H bonds.The catalytic activity of metallic Ti species strongly depends on its particle size and dispersity.Ti clusters and even single atoms are therefore highly desirable,but their controllable fabrication has been highly challenging.Herein,we demonstrate a novel facile sonochemical syn-thesis of a Ti-O clusters featuring single Ti atom catalyst at room temperature.Through reducing TiCl4 by MgBu2 with ultrasound instead of heating as driving force,numerous single Ti atoms coupled with Ti-O clusters with Ti loading on graphene(Ti1/Ti-O@G)up to 22.6 wt％have been successfully obtained.The prepared Ti1/Ti-O@G con-tributes high reactivity and superior catalytic activity,therefore enabling full dehydrogenation of NaAlH4 at 80 ℃ in thermogravimetric mode and re-hydrogenation at 30 ℃ and 10 MPa with 4.9 wt％H2.This fact indicates for the first time that single Ti atom catalyst with high loading is highly effective in catalyzing hydrogen cycling of NaAlH4 at remarkably reduced temperatures.

Key words

Hydrogen storage/Nanocatalysis/Transition metals/Single Ti atoms/NaAlH4

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基金项目

National Outstanding Youth Foundation of China(52125104)

浙江省自然科学基金(LD21E010002)

国家自然科学基金(52071285)

国家自然科学基金(52001277)

中央高校基本科研业务费专项(2021FZZX001-09)

中央高校基本科研业务费专项(226-2022-00246)

National Youth Top-Notch Talent Support Program()

出版年

2024
稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDCSCDEI
影响因子：0.801
ISSN：1001-0521
参考文献量4
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