Constructing electrospun spinel NiFe 2 O 4 nanofibers decorated with palladium ions as nanosheets heterostructure: boosting electrocatalytic activity of HER in alkaline water electrolysis
The development of efficient electrocatalysts for the water splitting process and understanding their fundamental catalytic mechanisms are highly essential to achieving high performance in energy conversion technologies. Herein, we have synthesised spinel nickel ferrite nanofibers (NiFe O -NFs) an e...
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| Veröffentlicht in: | Nanoscale 2022-07, Vol.14 (29), p.10360-10374 |
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| creator | Selvasundarasekar, Sam Sankar Bijoy, T K Kumaravel, Sangeetha Karmakar, Arun Madhu, Ragunath Bera, Krishnendu Nagappan, Sreenivasan Dhandapani, Hariharan N Lee, Seung-Cheol Kundu, Subrata |
| description | The development of efficient electrocatalysts for the water splitting process and understanding their fundamental catalytic mechanisms are highly essential to achieving high performance in energy conversion technologies. Herein, we have synthesised spinel nickel ferrite nanofibers (NiFe
O
-NFs)
an electrospinning (ES) method followed by a carbonization process. The resultant fiber was subjected to electrocatalytic water splitting reactions in alkaline medium. The catalytic efficiency of the NiFe
O
-NFs in OER was highly satisfactory. But it is not high enough to catalyse the HER process. Hence, palladium ions were decorated as nanosheets on NiFe
O
-NFs as a heterostructure to improve the catalytic efficiency for HER. Density functional theory (DFT) confirms that the addition of palladium to NiFe
O
-NFs helps to reduce the effect of catalyst poisoning and improve the efficiency of the catalyst. In an alkaline hybrid electrolyser, the required cell voltage was observed as 1.51 V at a fixed current density of 10 mA cm
. |
| doi_str_mv | 10.1039/d2nr02203f |
| format | Article |
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O
-NFs)
an electrospinning (ES) method followed by a carbonization process. The resultant fiber was subjected to electrocatalytic water splitting reactions in alkaline medium. The catalytic efficiency of the NiFe
O
-NFs in OER was highly satisfactory. But it is not high enough to catalyse the HER process. Hence, palladium ions were decorated as nanosheets on NiFe
O
-NFs as a heterostructure to improve the catalytic efficiency for HER. Density functional theory (DFT) confirms that the addition of palladium to NiFe
O
-NFs helps to reduce the effect of catalyst poisoning and improve the efficiency of the catalyst. In an alkaline hybrid electrolyser, the required cell voltage was observed as 1.51 V at a fixed current density of 10 mA cm
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O
-NFs)
an electrospinning (ES) method followed by a carbonization process. The resultant fiber was subjected to electrocatalytic water splitting reactions in alkaline medium. The catalytic efficiency of the NiFe
O
-NFs in OER was highly satisfactory. But it is not high enough to catalyse the HER process. Hence, palladium ions were decorated as nanosheets on NiFe
O
-NFs as a heterostructure to improve the catalytic efficiency for HER. Density functional theory (DFT) confirms that the addition of palladium to NiFe
O
-NFs helps to reduce the effect of catalyst poisoning and improve the efficiency of the catalyst. In an alkaline hybrid electrolyser, the required cell voltage was observed as 1.51 V at a fixed current density of 10 mA cm
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O
-NFs)
an electrospinning (ES) method followed by a carbonization process. The resultant fiber was subjected to electrocatalytic water splitting reactions in alkaline medium. The catalytic efficiency of the NiFe
O
-NFs in OER was highly satisfactory. But it is not high enough to catalyse the HER process. Hence, palladium ions were decorated as nanosheets on NiFe
O
-NFs as a heterostructure to improve the catalytic efficiency for HER. Density functional theory (DFT) confirms that the addition of palladium to NiFe
O
-NFs helps to reduce the effect of catalyst poisoning and improve the efficiency of the catalyst. In an alkaline hybrid electrolyser, the required cell voltage was observed as 1.51 V at a fixed current density of 10 mA cm
.</abstract><cop>England</cop><pmid>35708550</pmid><doi>10.1039/d2nr02203f</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0002-7102-8380</orcidid><orcidid>https://orcid.org/0000-0001-7938-6601</orcidid><orcidid>https://orcid.org/0000-0001-9256-4986</orcidid><orcidid>https://orcid.org/0000-0002-7329-0067</orcidid><orcidid>https://orcid.org/0000-0002-9835-7117</orcidid><orcidid>https://orcid.org/0000-0001-9272-0299</orcidid></addata></record> |
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| source | Royal Society Of Chemistry Journals 2008- |
| title | Constructing electrospun spinel NiFe 2 O 4 nanofibers decorated with palladium ions as nanosheets heterostructure: boosting electrocatalytic activity of HER in alkaline water electrolysis |
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