期刊
NANOSCALE
卷 9, 期 21, 页码 7260-7267出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr01717k
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资金
- Singapore National Research Foundation [NRF-NRFF2015-02]
- Singapore MOE AcRF Tier 1 grants [2016-T1-002-065, RG113/15]
- Singapore A* STAR Pharos program [SERC 1527200022]
3D ordered porous structures of MoxC are prepared with different Mo to C ratios and tested for two possible promising applications: hydrogen evolution reaction (HER) through water splitting and lithium ion batteries (LIBs). Mo2C and MoC with 3D periodic ordered structures are prepared with a similar process but different precursors. The 3D ordered porous MoC exhibits excellent cycling stability and rate performance as an anode material for LIBs. A discharge capacity of 450.9 mA h g(-1) is maintained up to 3000 cycles at 10.0 A g(-1). The Mo2C with a similar ordered porous structure shows impressive electrocatalytic activity for the HER in neutral, alkaline and acidic pH solutions. In particular, Mo2C shows an onset potential of only 33 mV versus a reversible hydrogen electrode (RHE) and a Tafel slope of 42.5 mV dec(-1) in a neutral aqueous solution (1.0 M phosphate buffer solution), which is approaching that of the commercial Pt/C catalyst.
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