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MOF-derived high-entropy selenides with dual-conductive networks for sodium-ion storage.

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Title: MOF-derived high-entropy selenides with dual-conductive networks for sodium-ion storage.
Authors: Nan, Yuhuan1,2 (AUTHOR), Zhang, Yao1,2 (AUTHOR), Yang, Tianshuo1,2 (AUTHOR), Gao, Bingliang1,2 (AUTHOR) blgao@mail.neu.edu.cn
Source: Chemical Engineering Journal. Jun2026, Vol. 537, pN.PAG-N.PAG. 1p.
Subjects: Sodium ion batteries, Metal-organic frameworks, Energy storage, Chemical kinetics, High-entropy alloys, Chemical stability, Anodes
Abstract: Metal-organic framework (MOF)-derived carbon anodes hold immense promise for sodium-ion batteries (SIBs) but remain hindered by low initial Coulombic efficiency (ICE), sluggish kinetics, and structural degradation. To overcome these challenges, we present a high-entropy engineering strategy to fabricate a novel (FeCoNiMnCu)Se@C nanocomposite (HESe@C) via a controllable solvothermal-selenization route. Structural analysis reveals that a high configurational entropy (S conf = 1.61R) thermodynamically stabilizes the five metal species into a single-phase rock-salt cubic structure (Fm-3 m). Notably, in-situ carbothermal reduction generates highly dispersed metallic Fe0 nanoclusters within the carbon matrix, establishing a robust "dual-conductive network" that significantly accelerates electron transport. Consequently, the HESe@C anode delivers an exceptional ICE of 87% and superior rate capability, retaining 290 mAh·g−1 at an ultra-high current density of 15 A·g−1. Long-term cycling demonstrates remarkable durability with 455 mAh·g−1 retained after 2300 cycles at 1 A·g−1. Kinetic analysis confirms that the entropy-stabilized framework buffers volume expansion and leads to a dominant pseudocapacitive contribution (86.26%). Furthermore, a HESe@C|| Na 3 V 2 (PO 4) 3 full cell exhibits a practical capacity of 170 mAh·g−1 after 350 cycles. This work establishes a generic paradigm for leveraging entropy-driven structural regulation to resolve intrinsic kinetic and stability limitations in conversion-type anodes. • Entropy-driven HESe@C is constructed via MOF precursors. • High entropy (1.61 R) stabilizes the cubic rock-salt phase. • In-situ Fe0 rivets build a robust dual-conductive network. • Superior ICE of 87% and 290 mAh·g−1 at 15 A·g−1 are achieved. • The anode exhibits ultrastable cycling over 2300 cycles, with a capacity of 455 mAh·g−1. [ABSTRACT FROM AUTHOR]
Copyright of Chemical Engineering Journal is the property of Elsevier B.V. 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.)
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  Data: MOF-derived high-entropy selenides with dual-conductive networks for sodium-ion storage.
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  Data: <searchLink fieldCode="AR" term="%22Nan%2C+Yuhuan%22">Nan, Yuhuan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yao%22">Zhang, Yao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Tianshuo%22">Yang, Tianshuo</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Bingliang%22">Gao, Bingliang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> blgao@mail.neu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+Journal%22">Chemical Engineering Journal</searchLink>. Jun2026, Vol. 537, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Sodium+ion+batteries%22">Sodium ion batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Metal-organic+frameworks%22">Metal-organic frameworks</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+storage%22">Energy storage</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22High-entropy+alloys%22">High-entropy alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+stability%22">Chemical stability</searchLink><br /><searchLink fieldCode="DE" term="%22Anodes%22">Anodes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Metal-organic framework (MOF)-derived carbon anodes hold immense promise for sodium-ion batteries (SIBs) but remain hindered by low initial Coulombic efficiency (ICE), sluggish kinetics, and structural degradation. To overcome these challenges, we present a high-entropy engineering strategy to fabricate a novel (FeCoNiMnCu)Se@C nanocomposite (HESe@C) via a controllable solvothermal-selenization route. Structural analysis reveals that a high configurational entropy (S conf = 1.61R) thermodynamically stabilizes the five metal species into a single-phase rock-salt cubic structure (Fm-3 m). Notably, in-situ carbothermal reduction generates highly dispersed metallic Fe0 nanoclusters within the carbon matrix, establishing a robust "dual-conductive network" that significantly accelerates electron transport. Consequently, the HESe@C anode delivers an exceptional ICE of 87% and superior rate capability, retaining 290 mAh·g−1 at an ultra-high current density of 15 A·g−1. Long-term cycling demonstrates remarkable durability with 455 mAh·g−1 retained after 2300 cycles at 1 A·g−1. Kinetic analysis confirms that the entropy-stabilized framework buffers volume expansion and leads to a dominant pseudocapacitive contribution (86.26%). Furthermore, a HESe@C|| Na 3 V 2 (PO 4) 3 full cell exhibits a practical capacity of 170 mAh·g−1 after 350 cycles. This work establishes a generic paradigm for leveraging entropy-driven structural regulation to resolve intrinsic kinetic and stability limitations in conversion-type anodes. • Entropy-driven HESe@C is constructed via MOF precursors. • High entropy (1.61 R) stabilizes the cubic rock-salt phase. • In-situ Fe0 rivets build a robust dual-conductive network. • Superior ICE of 87% and 290 mAh·g−1 at 15 A·g−1 are achieved. • The anode exhibits ultrastable cycling over 2300 cycles, with a capacity of 455 mAh·g−1. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chemical Engineering Journal is the property of Elsevier B.V. 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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    Identifiers:
      – Type: doi
        Value: 10.1016/j.cej.2026.176258
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Sodium ion batteries
        Type: general
      – SubjectFull: Metal-organic frameworks
        Type: general
      – SubjectFull: Energy storage
        Type: general
      – SubjectFull: Chemical kinetics
        Type: general
      – SubjectFull: High-entropy alloys
        Type: general
      – SubjectFull: Chemical stability
        Type: general
      – SubjectFull: Anodes
        Type: general
    Titles:
      – TitleFull: MOF-derived high-entropy selenides with dual-conductive networks for sodium-ion storage.
        Type: main
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          Name:
            NameFull: Nan, Yuhuan
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            NameFull: Zhang, Yao
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            NameFull: Yang, Tianshuo
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            NameFull: Gao, Bingliang
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            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 537
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            – TitleFull: Chemical Engineering Journal
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