PtSnP/C and PtSn/C as efficient cathode catalysts for oxygen reduction reaction in microbial fuel cells
PtSnP/C and PtSn/C as efficient cathode catalysts for oxygen reduction reaction in microbial fuel cells
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PtSnP/C 和 PtSn/C 作为微生物燃料电池氧还原反应的高效阴极催化剂
DOI：
10.1016/j.ijhydene.2017.01.087
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发表时间：
2017-02
影响因子：
7.2
通讯作者：
Wang Xiujun
中科院分区：
文献类型：
--
作者：
Li Baitao;He Zhenzhen;Wang Mian;Wang Xiujun
本研究的重点是降低单室微生物燃料电池（SCMFC）催化剂成本和提高阴极性能。以空气阴极的超临界燃料电池为研究对象，研究了Pt/Sn原子比不同的Pt 7Sn 3 P/C和PtSn催化剂在氧还原反应中的催化性能。采用透射电子显微镜（TEM）、扫描电子显微镜（SEM）、X射线光电子能谱（XPS）和X射线衍射（XRD）对催化剂的形貌、表面组成和结构进行了表征。循环伏安（CV）分析表明，与传统的Pt/C催化剂相比，磷显著提高了氧化还原率，这归因于Pt 7Sn 3 P/C上最小的平均粒径（1.58 nm）和均匀的粒径分布。此外，磷的加入通过电子从Pt到P的转移途径改变了Pt的电子结构，导致PtSnP三元催化剂中Pt原子d带中心的低能移动。在3种不同Pt/Sn摩尔比的PtSn/C催化剂中，Pt 7Sn 3/C的ORR催化活性最高，甚至优于Pt/C，表明原子比对催化行为有显著影响。SCMFC的性能随阴极催化剂的类型而变化，Pt 7Sn 3 P/C具有最高的功率密度（361 ± 7.5 mW m−2），其次是Pt 7Sn 3/C（336 ± 11.8 mW m−2）和Pt/C（307 ± 11.5 mW m−2）。Pt 7Sn 3 P/C具有较高的氧化还原活性、较低的成本和较好的稳定性，是一种很有潜力的超临界燃料电池阴极催化剂。
This study focused on reducing the catalyst cost and improving the performance of cathode in single chamber microbial fuel cell (SCMFC). Cost-effective Pt7Sn3P/C and PtSn (with different Pt/Sn atomic ratios) catalysts were investigated for the oxygen reduction reaction (ORR) in SCMFCs with air cathode. The morphology, surface composition and the structural properties of the catalysts were characterized using transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). The cyclic voltammetry (CV) analyses showed that, phosphorus substantially improved ORR compared to the conventional Pt/C catalyst, which was ascribed to the smallest average particle diameters (1.58 nm) and uniform size distribution on Pt7Sn3P/C. Moreover, the addition of phosphorus modified the electronic structure of Pt through the pathway of electron transfer from Pt to P, leading to the lower energy shift ofd-band center for Pt atom in PtSnP ternary catalyst. Among three PtSn/C catalysts with different Pt/Sn molar ratios, Pt7Sn3/C showed the highest ORR catalytic activity, even better than Pt/C, indicating that the atomic ratio had a significant effect on the catalytic behavior. The performances of SCMFCs varied with the types of cathode catalysts, with Pt7Sn3P/C having the highest power density (361 ± 7.5 mW m−2), followed by Pt7Sn3/C (336 ± 11.8 mW m−2) and Pt/C (307 ± 11.5 mW m−2). Pt7Sn3P/C has a great potential as the cathode catalyst in SCMFCs due to high ORR activity, low cost and good stability.
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影响因子：
7.2
作者：
A. L. Vázquez-Larios;O. Solorza-Feria;H. Poggi‐Varaldo;Rosa de Guadalupe González-Huerta;M. Ponce-Noyola;E. Ríos‐Leal;N. Rinderknecht-Seijas
通讯作者：
A. L. Vázquez-Larios;O. Solorza-Feria;H. Poggi‐Varaldo;Rosa de Guadalupe González-Huerta;M. Ponce-Noyola;E. Ríos‐Leal;N. Rinderknecht-Seijas
影响因子：
4.6
作者：
Bing-Jian Su;Kuan-Wen Wang;Tien-chun cheng;Chung‐Jen Tseng
通讯作者：
Bing-Jian Su;Kuan-Wen Wang;Tien-chun cheng;Chung‐Jen Tseng
DOI：
10.1039/c5cp07184d
发表时间：
2016-01
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
Huimei Duan;Caixia Xu
通讯作者：
Huimei Duan;Caixia Xu
影响因子：
3.7
作者：
Syuan-Pei Lin;Kuan-Wen Wang;Chenwei Liu;Hong Chen;Jenghan Wang
通讯作者：
Syuan-Pei Lin;Kuan-Wen Wang;Chenwei Liu;Hong Chen;Jenghan Wang
影响因子：
6.6
作者：
C. Jeyabharathi;P. Venkateshkumar;J. Mathiyarasu;K. Phani
通讯作者：
C. Jeyabharathi;P. Venkateshkumar;J. Mathiyarasu;K. Phani