Volume 62, Issue 29 e202303875
Research Article

A Stress Self-Adaptive Structure to Suppress the Chemo-mechanical Degradation for High Rate and Ultralong Cycle Life Sodium Ion Batteries

Yiming Liu

Yiming Liu

College of Science & Institute for Sustainable Energy, Shanghai University, Shanghai, 200444 China

These authors contributed equally to this work.

Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), Writing - original draft (lead)

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Prof. Jing Wang

Prof. Jing Wang

Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao, 066004 China

These authors contributed equally to this work.

Contribution: Data curation (equal), Formal analysis (equal), Writing - original draft (equal)

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Qinhao Shi

Qinhao Shi

College of Science & Institute for Sustainable Energy, Shanghai University, Shanghai, 200444 China

Contribution: Data curation (supporting), Formal analysis (supporting), ​Investigation (supporting)

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Mouhui Yan

Mouhui Yan

College of Science & Institute for Sustainable Energy, Shanghai University, Shanghai, 200444 China

Contribution: Data curation (supporting), Formal analysis (supporting)

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Shengyu Zhao

Shengyu Zhao

College of Science & Institute for Sustainable Energy, Shanghai University, Shanghai, 200444 China

Contribution: Data curation (supporting), ​Investigation (supporting)

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Dr. Wuliang Feng

Dr. Wuliang Feng

College of Science & Institute for Sustainable Energy, Shanghai University, Shanghai, 200444 China

Contribution: Data curation (supporting), Formal analysis (supporting)

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Dr. Ruijuan Qi

Dr. Ruijuan Qi

Key Laboratory of Polar Materials and Devices (MOE) & Department of Electronics, East China Normal University, Shanghai, 200062 China

Contribution: Data curation (supporting), Resources (supporting)

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Prof. Jiaqiang Xu

Prof. Jiaqiang Xu

College of Science & Institute for Sustainable Energy, Shanghai University, Shanghai, 200444 China

Contribution: Writing - review & editing (supporting)

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Prof. Jiayan Luo

Prof. Jiayan Luo

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

Contribution: Writing - review & editing (supporting)

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Prof. Jiujun Zhang

Prof. Jiujun Zhang

College of Science & Institute for Sustainable Energy, Shanghai University, Shanghai, 200444 China

Contribution: Writing - review & editing (supporting)

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Prof. Yufeng Zhao

Corresponding Author

Prof. Yufeng Zhao

College of Science & Institute for Sustainable Energy, Shanghai University, Shanghai, 200444 China

Contribution: Conceptualization (lead), Formal analysis (lead), Funding acquisition (lead), Writing - review & editing (lead)

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First published: 21 April 2023
Citations: 18

Graphical Abstract

In this work, we report a novel architecture with FeP nanodots fully embedded in nitrogen doped carbon microplates skeleton (FeP@CMS) via the spatial confinement of carbon quantum dots (CQDs) . Such a structure allows the stress transfer between FeP nanodots and self-adaptive carbon matrix in sodium storage, which overcomes the intrinsic chemo-mechanical degradation of metal phosphides during long-term cycling.

Abstract

Transition-metal phosphides (TMPs) as typical conversion-type anode materials demonstrate extraordinary theoretical charge storage capacity for sodium ion batteries, but the unavoidable volume expansion and irreversible capacity loss upon cycling represent their long-standing limitations. Herein we report a stress self-adaptive structure with ultrafine FeP nanodots embedded in dense carbon microplates skeleton (FeP@CMS) via the spatial confinement of carbon quantum dots (CQDs). Such an architecture delivers a record high specific capacity (778 mAh g−1 at 0.05 A g−1) and ultra-long cycle stability (87.6 % capacity retention after 10 000 cycles at 20 A g−1), which outperform the state-of-the-art literature. We decode the fundamental reasons for this unprecedented performance, that such an architecture allows the spontaneous stress transfer from FeP nanodots to the surrounding carbon matrix, thus overcomes the intrinsic chemo-mechanical degradation of metal phosphides.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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