Abstract
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. © 2017 The Royal Society of Chemistry.
| Original language | English |
|---|---|
| Pages (from-to) | 7260-7267 |
| Journal | Nanoscale |
| Volume | 9 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 7 Jun 2017 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Funding
We acknowledge the financial support from the Singapore National Research Foundation (NRF-NRFF2015-02), the Singapore MOE AcRF Tier 1 grants 2016-T1-002-065, RG113/15, and the Singapore A* STAR Pharos program SERC 1527200022.
