Low-Cost Chitosan-Derived N-Doped Carbons Boost Electrocatalytic Activity of Multiwall Carbon Nanotubes

作者：Qiao Mo; Meysami Seyyed Shayan; Alvarez Ferrero Guillermo; Xie Fei; Meng Han; Grobert Nicole; Titirici Maria Magdalena

来源：Advanced Functional Materials, 2018, 28(16): 1707284.

DOI：10.1002/adfm.201707284

<jats:title>Abstract</jats:title><jats:p>An effective strategy is proposed to enhance the oxygen reduction reaction (ORR) performance of multiwall carbon nanotubes (MWCNTs) in both acid and alkaline electrolytes by coating them with a layer of biomass derivative N‐doped hydrothermal carbons. The N‐doped amorphous carbon coating plays triple roles: it (i) promotes the assembly of MWCNTs into a 3D network therefore improving the mass transfer and thus increasing the catalytic activity; (ii) protects the Fe‐containing active sites, present on the surface of the MWCNTs, from H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> poisoning; (iii) creates nitrogenated active sites and hence further enhances ORR activity and robustness.</jats:p>

• 出版日期2018-4-18