Ruthenium-anchored aminated MWCNTs/polyaniline membrane electrode assembly for alkaline water splitting

被引:1
|
作者
Bora, Dimple K. [1 ,2 ,3 ]
Bavdane, Priyanka P. [1 ,2 ]
Bhatt, Bhavana [1 ]
Nikumbe, Devendra Y. [1 ,2 ]
Sethia, Govind [2 ,3 ]
Nagarale, Rajaram K. [1 ,2 ]
机构
[1] CSIR Cent Salt & Marine Chem Res Inst, Membrane Sci & Separat Technol Div, Electro Membrane Proc Lab, Bhavnagar 364002, India
[2] Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India
[3] CSIR Cent Salt & Marine Chem Res Inst, Inorgan Mat & Catalysis Div, Bhavnagar 364002, India
关键词
OER (Oxygen evolution reaction); HER (Hydrogen evolution reaction); MWCNT (Multi-walled carbon nanotubes); AEM (Anion exchange membrane); Polyaniline (PANI); membrane electrode assembly (MEA); NITROGEN-DOPED GRAPHENE; HYDROGEN EVOLUTION; CARBON-NITRIDE; ELECTROCATALYST; EFFICIENT; CATALYSTS; SINGLE; REDUCTION; NICKEL; SITES;
D O I
10.1016/j.jelechem.2024.118027
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Here, we present a ruthenium-anchored aminated multi-walled carbon nanotube-based bifunctional electrocatalyst for alkaline water splitting (Ru@AM-MWCNTs). The method involves functionalizing MWCNTs before stabilising the ruthenium active sites. The prepared Ru@AM-MWCNTs displayed a low overpotential of 67 mV for HER on a glassy carbon electrode in a 1 M KOH electrolyte. Further, to promote the OER activity, Ru@AM-MWCNTs is sintered at 300 degrees C which reflected the OER at 283 mV overpotential at a current density of 10 mAcm(-2). The MEA made up of free-standing polyaniline and Ru@AM-MWCNTs as cathode and T-Ru@AM-MWCNTs as anode on nickel foam, achieved 80 % faradic efficiency for water splitting. In a 1 M KOH, it maintained a current density of 0.51 Acm(-2) for 30 h at an onset potential of 2 V, surpassing the Neosepta membrane's performance under identical experimental conditions. Furthermore, the produced oxygen is 98 % pure, demonstrating the MEA's excellent potential for green hydrogen production.
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页数:9
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