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Facile synthesis of tin-doped mayenite electride composite as a non-noble metal durable electrocatalyst for oxygen reduction reaction (ORR)
Khan, Karim; Tareen, Ayesha Khan; Li, Jia; Khan, Usman; Nairan, Adeela; Yuan, Yao; Zhang, Xuyang; Yang, Minghui; Ouyang, Zhengbiao
2018
发表期刊DALTON TRANSACTIONS
卷号47期号:38页码:13498-13506
摘要D In this study, we synthesized nanosized Sn-doped C12A7:e(-) (C12Al7-xSnx:e(-), where x = 0.20 to 1) composite with high surface area of 244 m(2) g(-1). An increasing trend in conductivity of Sn-doped C12A7:e(-) composites was observed at 300 K: 24 S cm(-1), 68 S cm(-1), 190 S cm(-1) and 290 S cm(-1), at doping levels of x = 0.20, 0.40, 0.80, and 1, respectively. Sn-doped C12A7:e(-), with and without reduced graphene oxide (rGO), acts as a less expensive and highly active and durable electrocatalyst in the oxygen reduction reaction (ORR) for fuel cells. In the case of C(12)A(7-x)Sn(x):e(-) (where x = 1), calculated onset potential and current density were comparable to the commercially available 20% Pt/C electrode. Moreover, significant improvement was observed for Sn-doped C12A7:e(-) (doping level x = 1) with rGO composite. The ORR current density was about 5.9 mA cm(-2), which was higher than that of Pt/C (5.2 mA cm(-2)). Our investigation of the effect of cation doping on structural and electrical properties of Sn-doped C12A7:e(-) composites shows that these results manifested the feasibility of this sol-gel method for different element doping. Furthermore, the as-prepared promising non-noble metal catalysts (NNMCs), viz., Sn-doped C12A7:e(-) composite materials, possess intrinsic long-time stability and excellent methanol resistance toward ORR in alkaline media and may serve as a promising alternative to Pt/C materials for ORR in its widespread implementation in fuel cells.
关键词Dot 7al(2)o(3) Electride Reduced Graphene Oxide Organic Framework Stable Electride Single-crystal Hydrogen 12cao-center-dot-7al(2)o(3) Fabrication Anions Co
学科领域Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/17128
专题2018专题
推荐引用方式
GB/T 7714
Khan, Karim,Tareen, Ayesha Khan,Li, Jia,et al. Facile synthesis of tin-doped mayenite electride composite as a non-noble metal durable electrocatalyst for oxygen reduction reaction (ORR)[J]. DALTON TRANSACTIONS,2018,47(38):13498-13506.
APA Khan, Karim.,Tareen, Ayesha Khan.,Li, Jia.,Khan, Usman.,Nairan, Adeela.,...&Ouyang, Zhengbiao.(2018).Facile synthesis of tin-doped mayenite electride composite as a non-noble metal durable electrocatalyst for oxygen reduction reaction (ORR).DALTON TRANSACTIONS,47(38),13498-13506.
MLA Khan, Karim,et al."Facile synthesis of tin-doped mayenite electride composite as a non-noble metal durable electrocatalyst for oxygen reduction reaction (ORR)".DALTON TRANSACTIONS 47.38(2018):13498-13506.
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