Structural Advantage Induced by Sulfur to Boost the Catalytic Performance of FeNC Catalyst towards the Oxygen Reduction Reaction,ChemCatChem

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Structural Advantage Induced by Sulfur to Boost the Catalytic Performance of FeNC Catalyst towards the Oxygen Reduction Reaction
ChemCatChem ( IF 3.8 ) Pub Date : 2018-07-05 , DOI: 10.1002/cctc.201800771
Ergui Luo _{1,

2} , Meiling Xiao ₁ , Yuemin Wang _{1,

2} , Junjie Ge ₁ , Changpeng Liu ₁ , Wei Xing _{1,

3}

Affiliation

Among various replacement candidates for precious‐metal catalysts towards the cathodic oxygen reduction reaction (ORR) of fuel cells, FeNC material has been perceived as the most promising one. Herein, we report an FeNC catalyst featured with highly uniform texture and high BET specific surface area. This catalyst was synthesized by a facile one‐step pyrolysis process accompanied by the sulfur‐induced in situ delamination effect, using glucose, trithiocyanuric acid and ferrous gluconate as precursors. The structural characteristics led to increased exposed active sites, which may be responsible for the dramatically improved activity of the final S‐doped FeNC catalyst with elevated half‐wave potentials in both acid (0.76 V vs. 0.68 V) and alkaline (0.87 V vs. 0.84 V) media compared to the sulfur‐free control sample.

中文翻译：

硫诱导FeNC催化剂催化氧还原反应的结构优势

在燃料电池阴极氧还原反应（ORR）的各种贵金属催化剂替代候选物中，FeNC材料被认为是最有前途的材料。在此，我们报道了FeNC催化剂，其具有高度均匀的织构和高BET比表面积。该催化剂是采用葡萄糖，三硫氰尿酸和葡萄糖酸亚铁为前体，通过简单的一步热解过程并伴随硫诱导的原位分层作用而合成的。结构特征导致暴露的活性位点增加，这可能是最终的S掺杂FeNC催化剂在酸性（0.76 V vs. 0.68 V）和碱性（0.87 Vvs。。0.84 V）介质与无硫对照样品相比。

更新日期：2018-07-05

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