An Efficient Anti-poisoning Catalyst against SOx, NOx, and POx: P, N-Doped Carbon for Oxygen Reduction in Acidic Media

被引：154

作者：

Najam, Tayyaba ^{[1
]}

Shah, Syed Shoaib Ahmad ^{[1
]}

Ding, Wei ^{[1
]}

Jiang, Jinxia ^{[1
]}

Jia, Li ^{[1
]}

Yao, Wang ^{[1
]}

Li, Li ^{[1
]}

Wei, Zidong ^{[1
]}

机构：

[1] Chongqing Univ, Sch Chem & Chem Engn, Chongqing Key Lab Chem Proc Clean Energy & Resour, Shazhengjie 174, Chongqing 400044, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 46期

基金：

中国国家自然科学基金;

关键词：

anti-poisoning; metal-free electrocatalysts; oxygen reduction reaction; P-; N-doped carbon; PEMFCs; ACTIVE-SITES; NITROGEN; CO; ELECTROCATALYST; DEGRADATION; PHOSPHORUS; GRAPHENE; SPECTROSCOPY; NANOFIBERS; MEMBRANE;

D O I：

10.1002/anie.201808383

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrocatalysts are readily poisoned during the catalysis of the oxygen reduction reaction (ORR); even air containing traces of SOx and/or NOx significantly decrease the activity and the durability of H-2-O-2 fuel cells. Now, a metal-free strategy is reported to develop an efficient anti-poisoning ORR catalyst, which involves the pyrolysis of PDAP-phytic acid super-molecular aggregate (PPSA). The pyrolyzed co-doped carbon acting as a metal-free electrocatalyst shows an enhanced activity for ORR in acidic medium, even under poisoning conditions (SOx, NOx, and POx). Moreover, P-doping also changes the ORR pathway by yielding less than 4% of H2O2, indicating a four-electron pathway whereas more than >20% of H2O2 was recorded for N-doped carbon synthesized from PDAP.

引用

页码：15101 / 15106

页数：6

共 55 条

[1]

[Anonymous], 2011, ANGEW CHEM-GER EDIT

[2]

[Anonymous], 2013, Angew. Chem, DOI DOI 10.1002/ANGE.201303924

[3]

[Anonymous], 2015, ANGEW CHEM INT EDIT

[4] On a theory of the van der Waals adsorption of gases [J].