摘要
大量研究已表明Fe/N/C是极具前景的氧还原非贵金属催化剂。为发展快速、规模化的制备工艺,以聚酰胺酸、乙酰丙酮铁和三聚氰胺为原料,通过静电纺丝技术制备了一系列氮掺杂碳纳米纤维负载的Fe催化剂(Fe/N/CNF),通过XRD、XPS、SEM、TEM等表征技术测试了催化剂的物相、组分及微观形貌,并通过电化学测试方法研究了Fe含量对其氧还原反应活性的影响。在酸性电解质中,Fe/N/CNFs-3(Fe载量为3%,质量分数)催化剂呈现了良好的氧还原活性,经过5 000圈的循环伏安扫描,其初始电压和半波电位比商业化Pt/C催化剂的仅仅低34和120 m V,呈现了良好的稳定性。
Fe/N/C catalyst is considered as a very promising catalyst for oxygen reduction reaction. To develop a facile mass production method, a series of Fe- and N-doped nano carbon fiber (Fe/N/C) catalysts were synthesized via electrospinning the mixture of poly(amic acid)(PAA) nanofiber-supported iron acetylacetonate [Fe(acac)3] and melamine. The composition and microstructural properties of prepared catalysts were identified by several characterization techniques including XRD, XPS, BET, SEM and TEM. The influence of the Fe loading on the performance of ORR was also investigated electrochemically in acid media. The onset and half-wave potential for Fe/N/CNFs-3 (3% Fe) catalyst are just 34 and 120 mV lower than those of the commercial Pt/C catalyst, respectively. Moreover, the prepared catalyst exhibits comparable durability with the Pt/C catalyst during potential cycle testing.
作者
王中伟
王敏
韦露
李建伟
赵新生
WANG Zhong-wei;WANG Min;WEI Lu;LI Jian-wei;ZHAO Xin-sheng(School of Physics and Electronic Engineering,Jiangsu Normal University,Xuzhou Jiangsu 221116,China)
出处
《电源技术》
CAS
北大核心
2019年第4期583-586,共4页
Chinese Journal of Power Sources
基金
国家自然科学基金(21776119
21376113)
江苏师范大学研究生科研创新计划项目(2016YYB072)
