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ICCAS OpenIR  > 分子纳米结构与纳米技术实验室  > 期刊论文
题名: Sodium chloride-assisted green synthesis of a 3D Fe-N-C hybrid as a highly active electrocatalyst for the oxygen reduction reaction
作者: Zhang, Yun1, 2; Huang, Lin-Bo1, 3; Jiang, Wen-Jie1, 3; Zhang, Xing1, 3; Chen, Yu-Yun1; Wei, Zidong1, 2; Wan, Li-Jun1, 3; Hu, Jin-Song1, 3
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2016
卷: 4, 期:20, 页:7781-7787
收录类别: SCI
英文摘要: To promote the oxygen reduction reaction (ORR) on a non-precious-metal catalyst, integrating two-dimensional (2D) nanosheets and one-dimensional (1D) nanotubes in one catalyst is considered as one of the desirable approaches since this hybrid architecture can host more useful active sites and enhance mass/electron transfer. Herein, we demonstrated a sodium chloride-assisted strategy for the in situ synthesis of a three-dimensional (3D) hybrid of carbon nanosheets and nanotubes. The micrometer-scale sodium chloride (NaCl) crystal acted as a recyclable skeleton to adsorb the precursors on its surfaces, which assisted the formation of micrometer-sized graphitic carbon nanosheets with nanometer thickness by the template effect during the pyrolysis, and iron-based nanocrystals with a size of tens of nanometers by helping the distribution of iron sources and preventing their aggregation. The small iron-based nanocrystals favored the growth of long CNTs connected to carbon nanosheets and the outmigration of carbon atoms during the cooling process, which led to the formation of carbon-layer encapsulated metallic iron nanoparticles between the carbon nanosheets or inside the carbon nanotubes. Benefiting from these features, the developed hybrid exhibited a significantly enhanced electrocatalytic activity and durability for the ORR. The results may open up opportunities for exploring cost-effective high-performance electrocatalysts for energy applications.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36129
Appears in Collections:分子纳米结构与纳米技术实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, Beijing Natl Lab Mol Sci, 2 North First St, Beijing 100190, Peoples R China
2.Chongqing Univ, Inst Sch Chem & Chem Engn, Chongqing Key Lab Chem Proc Clean Energy & Resour, Shapingba 174, Chongqing 400044, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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