The elemental pegging effect in locally ordered nanocrystallites of high-entropy oxide enables superior lithium storage

Huitao Leng; Panpan Zhang; Jiansheng Wu; Taiding Xu; Hong Deng; Pan Yang; Shouyue Wang; Jingxia Qiu; Zhenzhen Wu; Sheng Li

doi:10.1039/d3nr04006b

The elemental pegging effect in locally ordered nanocrystallites of high-entropy oxide enables superior lithium storage

Huitao Leng, Panpan Zhang, Jiansheng Wu, Taiding Xu, Hong Deng, Pan Yang, Shouyue Wang, Jingxia Qiu, Zhenzhen Wu, Sheng Li

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

High-entropy oxides (HEOs) can be well suited for lithium-ion battery anodes because of their multi-principal synergistic effect and good stability. The appropriate selection and combination of elements play a crucial role in designing conversion-type anode materials with outstanding electrochemical performance. In this study, we have successfully built a single-phase spinel-structured HEO material of (Mn_0.23Fe_0.23Co_0.22Cr_0.19Zn_0.13)₃O₄ (HEO-MFCCZ). When the HEO-MFCCZ materials transform into a coexisting state of amorphous and nanocrystalline structures during the cycling process, the inert Zn element can initiate a pegging effect, causing enhanced stability. The transition also introduces many defect sites, effectively reducing the potential barrier for ion transport and accelerating ion transport. The increased electronic and ionic conductivities and pseudocapacitive contribution significantly enhance the rate performance. As a result, a unique and practical approach is provided for developing anode materials for lithium-ion batteries.

Original language	English
Pages (from-to)	19139-19147
Number of pages	9
Journal	Nanoscale
Volume	15
Issue number	47
DOIs	https://doi.org/10.1039/d3nr04006b
State	Published - 25 Oct 2023

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title = "The elemental pegging effect in locally ordered nanocrystallites of high-entropy oxide enables superior lithium storage",

abstract = "High-entropy oxides (HEOs) can be well suited for lithium-ion battery anodes because of their multi-principal synergistic effect and good stability. The appropriate selection and combination of elements play a crucial role in designing conversion-type anode materials with outstanding electrochemical performance. In this study, we have successfully built a single-phase spinel-structured HEO material of (Mn0.23Fe0.23Co0.22Cr0.19Zn0.13)3O4 (HEO-MFCCZ). When the HEO-MFCCZ materials transform into a coexisting state of amorphous and nanocrystalline structures during the cycling process, the inert Zn element can initiate a pegging effect, causing enhanced stability. The transition also introduces many defect sites, effectively reducing the potential barrier for ion transport and accelerating ion transport. The increased electronic and ionic conductivities and pseudocapacitive contribution significantly enhance the rate performance. As a result, a unique and practical approach is provided for developing anode materials for lithium-ion batteries.",

author = "Huitao Leng and Panpan Zhang and Jiansheng Wu and Taiding Xu and Hong Deng and Pan Yang and Shouyue Wang and Jingxia Qiu and Zhenzhen Wu and Sheng Li",

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T1 - The elemental pegging effect in locally ordered nanocrystallites of high-entropy oxide enables superior lithium storage

AU - Leng, Huitao

AU - Zhang, Panpan

AU - Wu, Jiansheng

AU - Xu, Taiding

AU - Deng, Hong

AU - Yang, Pan

AU - Wang, Shouyue

AU - Qiu, Jingxia

AU - Wu, Zhenzhen

AU - Li, Sheng

PY - 2023/10/25

Y1 - 2023/10/25

N2 - High-entropy oxides (HEOs) can be well suited for lithium-ion battery anodes because of their multi-principal synergistic effect and good stability. The appropriate selection and combination of elements play a crucial role in designing conversion-type anode materials with outstanding electrochemical performance. In this study, we have successfully built a single-phase spinel-structured HEO material of (Mn0.23Fe0.23Co0.22Cr0.19Zn0.13)3O4 (HEO-MFCCZ). When the HEO-MFCCZ materials transform into a coexisting state of amorphous and nanocrystalline structures during the cycling process, the inert Zn element can initiate a pegging effect, causing enhanced stability. The transition also introduces many defect sites, effectively reducing the potential barrier for ion transport and accelerating ion transport. The increased electronic and ionic conductivities and pseudocapacitive contribution significantly enhance the rate performance. As a result, a unique and practical approach is provided for developing anode materials for lithium-ion batteries.

AB - High-entropy oxides (HEOs) can be well suited for lithium-ion battery anodes because of their multi-principal synergistic effect and good stability. The appropriate selection and combination of elements play a crucial role in designing conversion-type anode materials with outstanding electrochemical performance. In this study, we have successfully built a single-phase spinel-structured HEO material of (Mn0.23Fe0.23Co0.22Cr0.19Zn0.13)3O4 (HEO-MFCCZ). When the HEO-MFCCZ materials transform into a coexisting state of amorphous and nanocrystalline structures during the cycling process, the inert Zn element can initiate a pegging effect, causing enhanced stability. The transition also introduces many defect sites, effectively reducing the potential barrier for ion transport and accelerating ion transport. The increased electronic and ionic conductivities and pseudocapacitive contribution significantly enhance the rate performance. As a result, a unique and practical approach is provided for developing anode materials for lithium-ion batteries.

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DO - 10.1039/d3nr04006b

M3 - 文章

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AN - SCOPUS:85176231946

SN - 2040-3364

VL - 15

SP - 19139

EP - 19147

JO - Nanoscale

JF - Nanoscale

IS - 47

ER -

The elemental pegging effect in locally ordered nanocrystallites of high-entropy oxide enables superior lithium storage

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