In:
Advanced Functional Materials, Wiley, Vol. 25, No. 38 ( 2015-10), p. 6077-6083
Abstract:
As an effective alternative to noble platinum electrocatalyst, earth abundant and inexpensive layered transition metal dichalcogenides (TMDs) are investigated for the hydrogen evolution reaction (HER). Compared with binary TMDs, the tunably composed ternary TMDs have hitherto received relatively little attention. Here, few‐layered ternary WS 2(1− x ) Se 2 x nanoribbons (NRs) with metallic 1T phases, much more catalytically active in HER, are prepared for the first time. The favorable Δ G H o introduced by the tensile region on the surface, along with the presence of local lattice distortions of the WS 2(1− x ) Se 2 x nanoribbons with metallic 1T phases, greatly promotes the HER process. These ternary NRs achieve the lowest overpotential of ≈0.17 V at 10 mA cm −2 and a Tafel slope of ≈68 mV dec −1 at a low catalyst loading (≈0.30 ± 0.02 mg cm −2 ). Notably, the long‐term durability suggests the potential of practical applications in acid electrolytes. The results here suggest that the ternary WS 2(1− x ) Se 2 x NRs with 1T phases are prominent alternatives to platinum‐based HER electrocatalysts.
Type of Medium:
Online Resource
ISSN:
1616-301X
,
1616-3028
DOI:
10.1002/adfm.201502680
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2029061-5
detail.hit.zdb_id:
2039420-2
SSG:
11
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