Nitrogen-Doped Carbon Nanofiber/Molybdenum Disulfide Nanocomposites Derived from Bacterial Cellulose for High-Efficiency Electrocatalytic Hydrogen Evolution Reaction

• DOI: 10.1021/acsami.5b06274
• Publication Date: 2015-08-24T16:11:45Z
• Authors: Feili Lai; Yue-E Miao; Yunpeng Huang; Youfang Zhang; Tianxi Liu
• Keywords: Molybdenum disulfide; Overpotential; Bacterial Cellulose; Carbon fibers

To remit energy crisis and environmental deterioration, non-noble metal nanocomposites have attracted extensive attention, acting as a fresh kind of cost-effective electrocatalysts for hydrogen evolution reaction (HER). In this work, hierarchically organized nitrogen-doped carbon nanofiber/molybdenum disulfide (pBC-N/MoS2) were successfully prepared via the combination in situ polymerization, high-temperature carbonization process, hydrothermal reaction. Attributing to uniform coating polyaniline on surface bacterial cellulose, nanofiber network acts an excellent three-dimensional template growth MoS2 nanosheets. The obtained hierarchical pBC-N/MoS2 exhibit electrocatalytic activity HER with small overpotential 108 mV, high current density 8.7 mA cm–2 at η = 200 low Tafel slope 61 mV dec–1, even stability. greatly improved performance is benefiting from highly exposed active edge sites nanosheets, intimate connection between nanosheets conductive nanofibers networks thus formed. Therefore, work provides novel strategy design application cellulose MoS2-based eletrocatalysts.