Wang Ruiying, Yang Lili, Wang Xingchao, Sun Zhipeng, Guo Yong, Lou Mengran, Shi Hongli, Wen Pengtao, Hu Xiaoqin
State Key Laboratory of Chemistry and Utilization of Carbon-based Energy Resource, Key Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region; Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, P. R. China.
Materials and Energy School, Guangdong University of Technology, Guangzhou 510006, Guangdong, P. R. China.
Inorg Chem. 2021 Sep 6;60(17):13736-13747. doi: 10.1021/acs.inorgchem.1c02111. Epub 2021 Aug 26.
As an environmentally friendly energy technology, direct methanol fuel cells (DMFCs) meet the needs of sustainable development. Herein, novel dicyanamide anion-based (N(CN)) ionic liquid (IL)-functionalized reduced graphene oxide (rGO)-supported Pt catalysts are synthesized via a facile one-pot room temperature reduction method, which show a boost in methanol oxidation performance compared with Pt/rGO. The mass activities of the as-prepared Pt/emimN(CN)/rGO (863.6 mA mg) and Pt/epyN(CN)/rGO (524.9 mA mg) are about five and three times higher than that of Pt/rGO (178.6 mA mg), and about six and four times higher than that of Pt/C (140.2 mA mg), respectively. The participation of ILs significantly improves the CO poisoning resistance, stability, and activity for methanol oxidation of catalysts. The relationship between the structures and conductivities of diverse ILs and the performance of Pt catalysts are studied systematically. These findings may offer a promising prospect of ILs in DMFCs.
作为一种环境友好型能源技术，直接甲醇燃料电池（DMFC）满足了可持续发展的需求。在此，通过简便的一锅法室温还原法合成了新型双氰胺阴离子基（N(CN)）离子液体（IL）功能化的还原氧化石墨烯（rGO）负载的Pt催化剂，与Pt/rGO相比，其甲醇氧化性能得到了提高。所制备的Pt/emimN(CN)/rGO（863.6 mA mg）和Pt/epyN(CN)/rGO（524.9 mA mg）的质量活性分别约为Pt/rGO（178.6 mA mg）的五倍和三倍，约为Pt/C（140.2 mA mg）的六倍和四倍。离子液体的参与显著提高了催化剂对CO中毒的抗性、稳定性和甲醇氧化活性。系统研究了不同离子液体的结构与电导率以及Pt催化剂性能之间的关系。这些发现可能为离子液体在直接甲醇燃料电池中的应用提供一个有前景的前景。
