Ni-nanoclusters hybridized 1T-Mn-VTe2 mesoporous nanosheets for ultra-low potential water splitting
Pan, Uday Narayan 1Paudel, Dasu Ram 1Das, Amit Kumar 1Singh, Thangjam Ibomcha 1Kim, Nam Hoon 1Lee, Joong Hee1
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作者信息
1. Jeonbuk Natl Univ, Dept Nano Convergence Engn BK21 Four, Jeonju 54896, Jeonbuk, South Korea
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Abstract
Metallic (1T) transition metal dichalcogenides (TMDCs) shows great potential for electrocatalytical water-splitting (ECWS). Among different 1T-TMDCs, vanadium (V)-based 1T-TMDCs has highest thermodynamic stability. Now, among different V-based 1T-TMDCs, 1T-VTe2 holds the best potential for ECWS due to strongest interlayer coupling between V and Te. In the present study, we have developed nickel nanoclusters (NiNCs) hybridized and manganese (Mn) intercalated and doped 1T-VTe2 nanosheets (NiNCs-1T-Mn-VTe2 NS) for ultra-low potential ECWS. Mn doping and intercalation in 1T-VTe2 (1T-Mn-VTe2) significantly improve ECWS efficacy following improving oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performances. Hybridization of NiNCs with1T-Mn- VTe2 develop a true ECWS-catalyst NiNCs-1T-Mn-VTe2 NS for ultra-low potential water-splitting. NiNCs-1T-Mn-VTe2 NS showed excellent performance requiring only HER-overpotential of 61 mV to reach 10 mA cm-2 and OER overpotential of 258 mV to reach 40 mA cm-2. NiNCs-1T-Mn-VTe2NS (+ -) device required a cell potential of 1.51 V to reach 10 mA cm-2.
Key words
Overall water splitting/Ni-nanoclusters/Vanadium ditelluride/Doping and intercalation/Ultra-low potential/Hybridization
NSTL
Elsevier