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Fine regulation of self-supporting metal phosphonates for improved overall water splitting.

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Title: Fine regulation of self-supporting metal phosphonates for improved overall water splitting.
Authors: Wang, Li-Wen1 (AUTHOR), Yang, Wen-Peng1 (AUTHOR), Wang, Fu-Min1 (AUTHOR), Tang, Si-Fu1 (AUTHOR) tangsf@qau.edu.cn
Source: International Journal of Hydrogen Energy. Nov2024, Vol. 90, p775-783. 9p.
Subjects: Chemical kinetics, Transition metals, Water electrolysis, Hydrogen as fuel, Catalytic activity
Abstract: The exploration of high-performance water electrolysis catalysts is crucial for the development of hydrogen energy and the alleviation of increasingly serious environmental problems. Transition metal phosphonates are very promising electrocatalysts. In this work, a new nickel phosphonate has been synthesized and successfully developed into high-performance electrocatalyst through in-situ growth on nickel foam (NF), introduction of iron, and adjustment of Ni:Fe mole ratio. It is revealed that NiFe12 and NIFe13 exhibit the best OER (η 10 : 268 mV vs. RHE; Tafel slope: 54 mV dec−1) and HER (η 10 : 172 mV vs. RHE; Tafel slope: 77 mV dec−1) catalytic activity under optimized conditions, respectively, with fast reaction kinetics and long-term durability. The water electrolysis device assembled with them can drive a current density of 10 mA cm−2 at low voltage (1.68 V) with long-term durability, demonstrating promising application prospects. This work has important reference significance for the development of transition metal-based water electrolysis catalysts. [Display omitted] • A nickel phosphonate with two-dimensional crystal structure has been synthesized. • Nickel phosphonate can be developed into high-performance electrocatalyst. • The nickel phosphonate is in situ grown on nickel foam and doped with iron. • The OER and HER performance can be optimized by finely altering the Ni:Fe ratio. • Transition metal phosphonates are very promising electrocatalysts. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 181036955
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  Data: Fine regulation of self-supporting metal phosphonates for improved overall water splitting.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Li-Wen%22">Wang, Li-Wen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Wen-Peng%22">Yang, Wen-Peng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Fu-Min%22">Wang, Fu-Min</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tang%2C+Si-Fu%22">Tang, Si-Fu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tangsf@qau.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Nov2024, Vol. 90, p775-783. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Transition+metals%22">Transition metals</searchLink><br /><searchLink fieldCode="DE" term="%22Water+electrolysis%22">Water electrolysis</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+as+fuel%22">Hydrogen as fuel</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The exploration of high-performance water electrolysis catalysts is crucial for the development of hydrogen energy and the alleviation of increasingly serious environmental problems. Transition metal phosphonates are very promising electrocatalysts. In this work, a new nickel phosphonate has been synthesized and successfully developed into high-performance electrocatalyst through in-situ growth on nickel foam (NF), introduction of iron, and adjustment of Ni:Fe mole ratio. It is revealed that NiFe12 and NIFe13 exhibit the best OER (η 10 : 268 mV vs. RHE; Tafel slope: 54 mV dec−1) and HER (η 10 : 172 mV vs. RHE; Tafel slope: 77 mV dec−1) catalytic activity under optimized conditions, respectively, with fast reaction kinetics and long-term durability. The water electrolysis device assembled with them can drive a current density of 10 mA cm−2 at low voltage (1.68 V) with long-term durability, demonstrating promising application prospects. This work has important reference significance for the development of transition metal-based water electrolysis catalysts. [Display omitted] • A nickel phosphonate with two-dimensional crystal structure has been synthesized. • Nickel phosphonate can be developed into high-performance electrocatalyst. • The nickel phosphonate is in situ grown on nickel foam and doped with iron. • The OER and HER performance can be optimized by finely altering the Ni:Fe ratio. • Transition metal phosphonates are very promising electrocatalysts. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.ijhydene.2024.10.021
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 775
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      – SubjectFull: Chemical kinetics
        Type: general
      – SubjectFull: Transition metals
        Type: general
      – SubjectFull: Water electrolysis
        Type: general
      – SubjectFull: Hydrogen as fuel
        Type: general
      – SubjectFull: Catalytic activity
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      – TitleFull: Fine regulation of self-supporting metal phosphonates for improved overall water splitting.
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            NameFull: Wang, Li-Wen
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            NameFull: Yang, Wen-Peng
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            NameFull: Wang, Fu-Min
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            NameFull: Tang, Si-Fu
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              Text: Nov2024
              Type: published
              Y: 2024
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