Volume 136, Issue 41 e202407194
Forschungsartikel

Regulating Zn2+ Migration-Diffusion Behavior by Spontaneous Cascade Optimization Strategy for Long-Life and Low N/P Ratio Zinc Ion Batteries

Jie Feng

Jie Feng

School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, 710049 P. R. China

Contribution: Conceptualization (lead), Formal analysis (lead), ​Investigation (lead), Methodology (lead), Writing - original draft (lead), Writing - review & editing (lead)

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Xinyang Li

Xinyang Li

School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, 710049 P. R. China

Contribution: Conceptualization (equal), Methodology (equal), Writing - original draft (equal), Writing - review & editing (equal)

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Yuxin Ouyang

Yuxin Ouyang

School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, 710049 P. R. China

Contribution: Writing - original draft (equal)

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Hongyang Zhao

Corresponding Author

Hongyang Zhao

School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, 710049 P. R. China

Contribution: Conceptualization (equal), Writing - original draft (supporting), Writing - review & editing (equal)

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Na Li

Na Li

School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, 710049 P. R. China

Contribution: Methodology (supporting), Writing - original draft (supporting), Writing - review & editing (supporting)

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Kai Xi

Kai Xi

School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, 710049 P. R. China

Contribution: Conceptualization (supporting), Writing - review & editing (supporting)

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Junyan Liang

Junyan Liang

School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, 710049 P. R. China

Contribution: Methodology (equal)

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Shujiang Ding

Corresponding Author

Shujiang Ding

School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No.28, West Xianning Road, Xi'an, 710049 P. R. China

Contribution: Methodology (equal), Writing - review & editing (lead)

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First published: 31 May 2024
Citations: 2

Abstract

Parasitic side reactions and dendrite growth on zinc anodes are formidable issues causing limited lifetime of aqueous zinc ion batteries (ZIBs). Herein, a spontaneous cascade optimization strategy is first proposed to regulate Zn2+ migration-diffusion behavior. Specifically, PAPE@Zn layer with separation-reconstruction properties is constructed in situ on Zn anode. In this layer, well-soluble poly(ethylene oxide) (PEO) can spontaneously separation to bulk electrolyte and weaken the preferential coordination between H2O and Zn2+ to achieve primary optimization. Meanwhile, poor-soluble polymerized-4-acryloylmorpholine (PACMO) is reconstructed on Zn anode as hydrophobic flower-like arrays with abundant zincophilic sites, further guiding the de-solvation and homogeneous diffusion of Zn2+ to achieve the secondary optimization. Cascade optimization effectively regulates Zn2+ migration-diffusion behavior, dendrite growth and side reactions of Zn anode are negligible, and the stability is significantly improved. Consequently, symmetrical cells exhibit stability over 4000 h (1 mA cm−2). PAPE@Zn//NH4+−V2O5 full cells with a high current density of 15 A g−1 maintains 72.2 % capacity retention for 12000 cycles. Even better, the full cell demonstrates excellent performance of cumulative capacity of 2.33 Ah cm−2 at ultra-low negative/positive (N/P) ratio of 0.6 and a high mass-loading (~17 mg cm−2). The spontaneous cascade optimization strategy provides novel path to achieve high-performance and practical ZIBs.

Conflict of Interests

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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