Effect of Few-Layer Ti3C2Tx Supported Nano-Ni via Self-Assembly Reduction on Hydrogen Storage Performance of MgH2

被引：83

作者：

Gao, Haiguang ^{[1
,2
]}

Shao, Yuting ^{[1
,2
]}

Shi, Rui ^{[1
,2
]}

Liu, Yana ^{[1
,2
]}

Zhu, Jinglian ^{[1
,2
]}

Liu, Jiangchuan ^{[1
,2
]}

Zhu, Yunfeng ^{[1
,2
]}

Zhang, Jiguang ^{[1
,2
]}

Li, Liquan ^{[1
,2
]}

Hu, Xiaohui ^{[1
,2
]}

机构：

[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 211816, Peoples R China

[2] Nanjing Tech Univ, Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct, Nanjing 211816, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 42期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

hydrogen storage materials; magnesium hydride; MXene; catalyst; self-assembly; HYDRIDING COMBUSTION SYNTHESIS; CATALYTIC-ACTIVITY; IN-SITU; CARBON; KINETICS; ENHANCEMENT; IMPROVEMENT; TRANSITION; DESORPTION; PARTICLES;

D O I：

10.1021/acsami.0c15686

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

For the first time, few-layer Ti3C2Tx (FL-Ti3C2Tx) supporting highly dispersed nano-Ni particles with an interconnected and interlaced structure was elaborated through a self-assembly reduction process. FL-Ti3C2Tx not only acts as a supporting material but also self-assembles with Ni2+ ions through the electrostatic interaction, assisting in the reduction of nano-Ni. After ball milling with MgH2, Ni-30/FL-Ti3C2Tx (few-layer Ti(3)C(2)Tx supported 30 wt % nano-Ni via self-assembly reduction) shows superior catalytic activity for MgH2. For example, MgH2-5 wt % Ni-30/FL-Ti3C2Tx can release approximately 5.83 wt % hydrogen within 1800 s at 250 degrees C and absorb 5 wt % hydrogen within 1700 s at 100 degrees C. The combined effects of finely dispersed nano-Ni in situ-grown on FL-Ti3C2Tx, large specific area of FL-Ti3C2Tx, multiple-valence Ti (Ti4+, Ti3+, Ti-2+,Ti- and Ti-0) derived from FL-Ti3C2Tx, and the electronic interaction between Ni and FL-Ti3C2Tx can explain the superb hydrogen storage performance. Our results will attract more attention to the elaboration of the metal/FL-Ti3C2Tx composite via self-assembly reduction and provide a guideline to design high-efficiency composite catalysts with MXene in hydrogen storage fields.

引用

页码：47684 / 47694

页数：11

共 54 条

[31] Effect of graphene templated fluorides of Ce and La on the de/rehydrogenation behavior of MgH2 [J].