主讲人：孙书会教授

National Institute of Scientific Research, center for Energy, Materials, and Telecommunications (INRS-EMT), Montréal, Quebec, Canada. （加拿大(魁北克)国立科学研究院-能源材料研究所）

主题：Nanomaterials for Clean Energy Conversion and Storage in H2-Fuel Cells and Batteries（纳米材料在清洁能源--氢气燃料电池与锂/钠电池中的应用）

Email: shuhui@emt.inrs.ca

时间：2018年1月26日（星期五）10:00 – 11:00 am

地点：材料学院C315

组织单位：材料学院、纤维改性国家重点实验室

主讲人简介：

孙书会博士现为加拿大(魁北克)国立科学研究院-能源、材料研究所终身教授。孙博士长期致力于功能纳米材料（石墨烯，碳管，MOF, 金属和金属氧化物纳米材料等）的开发及其在电化学能源转换和存储方面的应用，包括氢气燃料电池、锂/钠离子电池、金属-空气电池、光解水制氢、及水处理等方面的应用。与加拿大巴拉德动力系统，AFCC, 美国通用汽车，Toyota (日本丰田汽车)等公司均有合作。在Energy Environmental Science (影响因子:29.51), Materials Today(影响因子:21.69), Adv. Mater. (影响因子:19.79), Adv. Energy Mater. (影响因子=16.72),Angew. Chem. Int. Ed., (影响因子:11.99)，Nano Energy(影响因子:12.34), Adv. Funct. Mater. (影响因子=12.12)等国际期刊上发表论文100余篇。撰写书籍章节10章，主编书籍2部，拥有2个美国授权专利。

近年来先后荣获世界青年科学院Fellow (2017), 美国电化学会-丰田青年科学家Fellow (2017)，国际纯粹与应用化学联合会 (IUPAC) 青年科学家（2017），国际电化学学会青年电化学家奖，加拿大总督学术金奖，安徽省自然科学一等奖，等。担任国际电化学能源科学院(IAOEES) Vice President兼理事。担任Electrochemical Energy Reviews (EER)执行主编，Nano Advances主编, Electrochimica Acta, International Journal of Hydrogen Energy,和Applied Energy的客座编辑及Frontiers in Energy Storage等国际期刊编委。

报告简介：

As clean and sustainable energy conversion devices, Hydrogen fuel cells (H2-FCs) are expected to play dominant role in future clean energy solutions for various applications. However, the high cost of Pt catalyst is one of the main obstacles for the wide-spread commercialization of PEMFCs. Therefore, developing highly efficient low-Pt and Pt-free catalysts are the key to solve the above-mentioned challenges.

In this talk, I will present our recent progress in developing advanced electrocatalysts mainly for oxygen reduction reaction (ORR) in H2-FCs. Among the non-precious-metal (NMP, Pt-free) catalysts, Fe/N/C catalysts are considered one of the most promising ORR catalysts. One major breakthrough has been made by Dodelet et al, with activity and performance of Fe/N/C catalyst approaching to that of Pt [1,2]. However, the durability of Fe/N/C catalysts is still insufficient for practical applications and its performance decay mechanism is still unclear. Very recently, we made a systematic study to verify whether iron is at the origin of the first rapid decay (stability problem) of the Fe/N/C catalyst for ORR in PEMFCs, which is important to find better ways to improve the durability of Fe/N/C catalysts [3]. Moreover, other types of novel nanostructured NPM catalysts will also be discussed [4-7]. At the same time, a series of low-Pt nanostructured electrocatalysts, synthesize by green chemistry and atomic layer deposition (ALD), including nanowires, nanotubes and single atoms, for fuel cells will also be presented [8-12].

Both lithium-ion (LIB) and sodium-ion batteries (SIB) are promising technologies for energy storage. We developed a facile, inexpensive and scalable wet-chemical strategy to fabricate the Fe3O4/graphene composites and porous carbon spheres. The nanocomposite shows dramatically enhanced electrochemical properties including excellent reversible capacity, cyclability and rate performance in LIBs and SIBs [13-15].

References

[1]Proietti, E.;Dodelet, J.P, et al. Nature Communications, 2011, 2, 416.

[2]Lefevre, M.; Proietti, E.; Jaouen, F.; Dodelet, J. P. Science 2009, 324, 71.

[3]Zhang, G.; Chenitz, R.; Lefèvre, M.; Sun, S.; Dodelet, J. P. Nano Energy, 2016, 29, 111.

[4]Li, J., Song, Y., Zhang, G., Liu, H., Wang, Y., Guo, X., Sun. S. Adv. Funct. Mater. 2017, 27, 1604356. Cover page.

[5]G. Zhang, Q. Wei, X. Yang, A. Tavares, S. Sun. Applied Catalysis B: Environmental, 2017, 206, 115.

[6]Yao, Y., You, Y., Zhang, G., Liu, J., Sun, H., Zou, Z. Sun, S. ACS Applied Materials & Interfaces 2016, 8, 6464.

[7]R. Chenitz, S. Sun, et al. Energy Environmental Science, 2017.

[8]Sun, S.; Zhang, G.; Geng, D.; Chen, Y.; Li, R.; Cai, M.; Sun, X. Angew. Chem. Int. Ed. 2011, 50, 422.

[9]Sun, S.; Jaouen, F.; Dodelet, J. Adv. Mater., 2008, 20, 3900.

[10]Sun, S.; Yang, D.; Villers, D.; Zhang, G.; Sacher, E.; Dodelet, J. Adv. Mater., 2008, 20, 571.

[11]Zhang, G.; Sun, S.; Cai, M.; Zhang, Y.; Li, R.; Sun, X. Scientific Reports, 2013, 3, 526.

[12]Sun, S. et al., Scientific Reports, 2013, 3, 1775.

[13]Y. Fu, Sun, S et al., J. Mater. Chem. A, 2015 3, 13807.

[14] Y. Fu, Sun, S et al., RSC Advance. 2016, 6, 84149.

[15] Y. Fu, Sun, S et al., Adv. Energy. Mater. 2017.