Sulfur and Phosphorus Co-Doped CoFeLDH/MXene Nanoarray Electrocatalyst for the Oxygen Evolution Reaction

被引：10

作者：

Zuo, Wenying ^{[1
]}

Lan, Xiongdiao ^{[1
]}

Lv, Guoyang ^{[1
]}

Yang, Cuicui ^{[1
]}

Lan, Ping ^{[1
]}

Peng, Bo ^{[1
]}

Liu, Pengru ^{[1
]}

Li, Ke ^{[2
,3
]}

机构：

[1] Guangxi Minzu Univ, Sch Chem & Chem Engn, Key Lab New Technol Chem & Biol Transformat Proc T, Guangxi Key Lab Polysaccharide Mat & Modificat,Gua, Nanning 530006, Guangxi, Peoples R China

[2] Trinity Coll Dublin, Ctr Res Adapt Nanostruct & Nanodevices CRANN, Sch Chem, Dublin, Ireland

[3] Trinity Coll Dublin, Adv Mat Bioengn Res Ctr AMBER, Dublin, Ireland

来源：

ACS APPLIED NANO MATERIALS | 2024年 / 7卷 / 10期

关键词：

Heteroatom doping; Layered double hydroxide; MXene; Oxygen evolution reaction; Electrocatalyst; LAYERED DOUBLE HYDROXIDES; HIGH-PERFORMANCE; EFFICIENT; MXENE; NANOSHEETS; GRAPHENE; SHEETS;

D O I：

10.1021/acsanm.4c01159

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The oxygen evolution reaction (OER) is crucial for producing hydrogen through electrochemical water splitting using renewable energy sources. To enhance hydrogen production efficiency, an electrocatalyst with high efficiency and stability for OER is necessary. Layered double hydroxides (LDHs) are among the most active electrocatalysts for alkaline OER, but LDHs suffer from poor conductivity, potential agglomeration, and low intrinsic activity. Herein, sulfur-phosphorus codoping of CoFeLDH/MXene (S,P-CoFeLDH/MXene) nanoarray hybrid electrocatalyst was developed using a stripped Ti3C2Tx MXene substrate through an in situ growth strategy and sulfur-phosphorus codoping. The S,P-CoFeLDH/MXene electrocatalyst demonstrated remarkable activity and stability against oxygen evolution in alkaline media, with a low overpotential of 305 mV at 10 mA cm(-2) and a Tafel slope of 39 mV dec(-1). Moreover, the overpotential decreased by only 1.3% after 2000 CV cycles, surpassing the noble metal RuO2 catalyst. This effective strategy introduces an idea for a hybrid electrocatalyst designed for oxygen evolution, and the direct preparation method lays the groundwork for its broad application.

引用

页码：11599 / 11608

页数：10

共 61 条

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