Volume 20, Issue 26 2311203
Research Article

Industrial Waste Derived Separators for Zn-Ion Batteries Achieve Homogeneous Zn(002) Deposition Through Low Chemical Affinity Effects

Chengwu Yang

Chengwu Yang

Center of Excellence in Responsive Wearable Materials, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok, 10330 Thailand

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004 P. R. China

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Pattaraporn Woottapanit

Pattaraporn Woottapanit

Center of Excellence in Responsive Wearable Materials, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok, 10330 Thailand

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Yilei Yue

Yilei Yue

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004 P. R. China

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Sining Geng

Sining Geng

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004 P. R. China

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Jin Cao

Jin Cao

College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei, 443002 P. R. China

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Xinyu Zhang

Corresponding Author

Xinyu Zhang

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004 P. R. China

E-mail: [email protected]; [email protected]; [email protected]

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Guanjie He

Corresponding Author

Guanjie He

Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ UK

E-mail: [email protected]; [email protected]; [email protected]

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Jiaqian Qin

Corresponding Author

Jiaqian Qin

Center of Excellence in Responsive Wearable Materials, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok, 10330 Thailand

E-mail: [email protected]; [email protected]; [email protected]

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First published: 17 January 2024
Citations: 41

Abstract

Designing a cost-effective and multifunctional separator that ensures dendrite-free and stable Zn metal anode remains a significant challenge. Herein, a multifunctional cellulose-based separator is presented consisting of industrial waste-fly ash particles and cellulose nanofiber using a facile solution-coating method. The resulting fly ash-cellulose (FACNF) separators enable a high ion conductivity (5.76 mS cm−1) and low desolvation energy barrier of hydrated Zn2+. These features facilitate fast ion transfer kinetics and inhibit water-induced side reactions. Furthermore, experimental results and theoretical simulations confirm that the presence of fly ash particles in FACNF separators effectively accommodate the preferential deposition of Zn(002) planes, due to the weak chemical affinity between Zn(002) plane and fly ash, to mitigate dendrite formation and growth. Consequently, the utilization of FACNF separators causes an impressive cycling performance in both Zn||Zn symmetric cells (1600 h at 2 mA cm−2/1 mAh cm−2) and Zn||(NH4)2V10O25 (NVO) full cells (4000 cycles with the capacity retention of 92.1% at 5 A g−1). Furthermore, the assembled pouch cells can steadily support digital thermometer over two months without generating gas and volume expansion. This work provides new insights for achieving crystallographic uniformity in Zn anodes and realizing cost-effective and long-lasting aqueous zinc-ion batteries (AZIBs).

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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