非晶态TiB<sub>2</sub>@C催化剂对NaAlH<sub>4</sub>合成和可逆储氢性能的影响

曹志杰; 李丽江; 马晓波

doi:10.7652/xjtuxb202101002

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非晶态TiB₂@C催化剂对NaAlH₄合成和可逆储氢性能的影响

更新时间：2025-07-09

- 非晶态TiB₂@C催化剂对NaAlH₄合成和可逆储氢性能的影响
- Effect of Amorphous TiB₂@C Catalyst on the Synthesis and Reversible Hydrogen Storage Performances of NaAlH₄
- 西安交通大学学报 2021年55卷第1期页码：10-16
- 作者机构：
  
  宁夏大学物理与电子电气工程学院,银川,750021
- 作者简介：
- 基金信息：
  
  : 2020-07-19。作者简介: 曹志杰(1989—),男,博士,副教授。基金项目: 国家自然科学基金青年基金资助项目(51801107)
- DOI：10.7652/xjtuxb202101002
  中图分类号： TG139.7
- 网络首发：2021-01-10，
  
  纸质出版：2021
- 稿件说明：
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曹志杰, 李丽江, 马晓波. 非晶态TiB₂@C催化剂对NaAlH₄合成和可逆储氢性能的影响[J]. 西安交通大学学报, 2021,55(1):10-16. DOI: 10.7652/xjtuxb202101002.

Effect of Amorphous TiB₂@C Catalyst on the Synthesis and Reversible Hydrogen Storage Performances of NaAlH₄[J]. 2021, 55(1): 10-16. DOI: 10.7652/xjtuxb202101002.
曹志杰, 李丽江, 马晓波. 非晶态TiB₂@C催化剂对NaAlH₄合成和可逆储氢性能的影响[J]. 西安交通大学学报, 2021,55(1):10-16. DOI: 10.7652/xjtuxb202101002. DOI：

Effect of Amorphous TiB₂@C Catalyst on the Synthesis and Reversible Hydrogen Storage Performances of NaAlH₄[J]. 2021, 55(1): 10-16. DOI: 10.7652/xjtuxb202101002. DOI：

摘要

为了提高NaAlH

的吸放氢动力学性能

采用球磨烧结两步法制备了非晶态TiB

和C复合催化剂(简写为TiB

@C)

并系统地研究了TiB

@C对NaAlH

合成和储氢性能的影响。研究结果表明

以NaH和Al为原料

添加质量分数为6%的TiB

@C作为复合催化剂

在室温、5 MPa氢压下进行球磨成功制备出NaAlH

。相对于球磨后的纯NaAlH

复合体系的起始放氢温度、三步放氢过程的峰值温度和前两步放氢过程的表观活化能均大幅降低。吸放氢测试结果显示

TiB

@C能够有效地改善NaAlH

的吸放氢动力学性能

且复合体系在10次吸氢循环过程中表现出优异的循环稳定性。这一系列性能的改善主要源于TiB

@C催化剂中TiB

和C的协同催化效应。

Abstract

To improve the hydrogenation/dehydrogenation kinetics ofNaAlH

an amorphousTiB

@C catalyst was prepared by a two-step process

and the effect of this catalyst on the synthesis and reversible hydrogen storage performance ofNaAlH

was systematically studied. Results show thatTiB

@C can catalyze the synthesis ofNaAlH

by usingNaH and Al as raw materials through a ball milling procedure at room temperature under 5 MPa hydrogen pressure. Compared with as-milled pureNaAlH

the desorption temperature and apparent activati

on energy of the as-preparedNaAlH

-6%TiB

@C are dramatically reduced. Moreover

this composite shows obviously increased hydrogen absorption/desorption kinetics and excellent cycling stability during 10 hydrogen absorption/desorption cycles. The improvements of the synthesis and reversible hydrogen storage performances ofNaAlH

are mainly due to the synergistic catalytic effect ofTiB

and C inTiB

@C catalyst.

关键词

Keywords

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非晶态TiB2@C催化剂对NaAlH4合成和可逆储氢性能的影响

Effect of Amorphous TiB2@C Catalyst on the Synthesis and Reversible Hydrogen Storage Performances of NaAlH4

DOI：10.7652/xjtuxb202101002

摘要

Abstract

关键词

Keywords

references

非晶态TiB₂@C催化剂对NaAlH₄合成和可逆储氢性能的影响

Effect of Amorphous TiB₂@C Catalyst on the Synthesis and Reversible Hydrogen Storage Performances of NaAlH₄