Two-dimensional titanium carbide MXenes as efficient non-noble metal electrocatalysts for oxygen reduction reaction

被引：87

作者：

Lin, Han ^{[1
,3
]}

Chen, Lisong ^{[2
]}

Lu, Xiangyu ^{[1
,3
]}

Yao, Heliang ^{[1
]}

Chen, Yu ^{[1
]}

Shi, Jianlin ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

SCIENCE CHINA-MATERIALS | 2019年 / 62卷 / 05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：

MXene; titanium carbide; electrocatalysis; oxygen reduction reaction; DOPED CARBON; NANOSHEETS; NANOCOMPOSITES; ELECTRODE; CATALYST; NITRIDE; CLAY; NPS;

D O I：

10.1007/s40843-018-9378-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

MXenes, a new family of multifunctional two dimensional (2D) solid crystals integrating high electroconductivity and rich surface chemistries, are promising candidates for electrolysis, which, however, have rarely been reported. Herein, free-standing ultrathin 2D MXene nanosheets were successfully fabricated from bulky and rigid MAX phase ceramics by liquid exfoliation with HF etching (delamination) and TPAOH intercalation (disintegration). The high oxygen reduction reaction (ORR) performance has been obtained, due to the extremely small thickness of the asfabricated Ti3C2 around 0.5-2.0 nm, equivalent to the dimensions of single-layer or double-layer Ti3C2 nanosheets in thickness. The ORR performance of the obtained Ti3C2 MXene-based catalyst exhibits desirable activity and stability in alkaline media. This study demonstrates the potential of earth-abundant 2D MXenes for constructing high-performance and cost-effective electrocatalysts.

引用

页码：662 / 670

页数：9

共 49 条

[1] 2D metal carbides and nitrides (MXenes) for energy storage [J].