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Do Zinc Dendrites Exist in Neutral Zinc Batteries: A Developed Electrohealing Strategy to In Situ Rescue In-Service Batteries.
Adv Mater 2019; :e1903778AM

Abstract

The dendritic issue in aqueous zinc-ion batteries (ZBs) using neutral/mild electrolytes has remained an intensive controversy for a long time: some researchers assert that dendrites severely exist while others claim great cycling stability without any protection. This issue is clarified by investigating charge/discharge-condition-dependent formation of Zn dendrites. Lifespan degradation (120 to 1.2 h) and voltage hysteresis deterioration (134 to 380 mV) are observed with increased current densities due to the formation of Zn dendrites (edge size: 0.69-4.37 µm). In addition, the capacity is also found to remarkably affect the appearance of the dendrites as well. Therefore, at small current densities or loading mass, Zn dendrites might not be an issue, while the large conditions may rapidly ruin batteries. Based on this discovery, a first-in-class electrohealing methodology is developed to eliminate already-formed dendrites, generating extremely prolonged lifespans by 410% at 7.5 mA cm-2 and 516% at 10 mA cm-2 . Morphological analysis reveals that vertically aligned Zn dendrites with sharp tips gradually become passivated and finally generate a smooth surface. This developed electrohealing strategy may promote research on metal dendrites in various batteries evolving from passive prevention to active elimination, rescuing in-service batteries in situ to achieve elongated lifetime.

Authors+Show Affiliations

Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China. Shenzhen Research Institute, City University of Hong Kong, Shenzhen, 518057, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31517400

Citation

Yang, Qi, et al. "Do Zinc Dendrites Exist in Neutral Zinc Batteries: a Developed Electrohealing Strategy to in Situ Rescue In-Service Batteries." Advanced Materials (Deerfield Beach, Fla.), 2019, pp. e1903778.
Yang Q, Liang G, Guo Y, et al. Do Zinc Dendrites Exist in Neutral Zinc Batteries: A Developed Electrohealing Strategy to In Situ Rescue In-Service Batteries. Adv Mater Weinheim. 2019.
Yang, Q., Liang, G., Guo, Y., Liu, Z., Yan, B., Wang, D., ... Zhi, C. (2019). Do Zinc Dendrites Exist in Neutral Zinc Batteries: A Developed Electrohealing Strategy to In Situ Rescue In-Service Batteries. Advanced Materials (Deerfield Beach, Fla.), pp. e1903778. doi:10.1002/adma.201903778.
Yang Q, et al. Do Zinc Dendrites Exist in Neutral Zinc Batteries: a Developed Electrohealing Strategy to in Situ Rescue In-Service Batteries. Adv Mater Weinheim. 2019 Sep 13;e1903778. PubMed PMID: 31517400.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Do Zinc Dendrites Exist in Neutral Zinc Batteries: A Developed Electrohealing Strategy to In Situ Rescue In-Service Batteries. AU - Yang,Qi, AU - Liang,Guojin, AU - Guo,Ying, AU - Liu,Zhuoxin, AU - Yan,Boxun, AU - Wang,Donghong, AU - Huang,Zhaodong, AU - Li,Xinliang, AU - Fan,Jun, AU - Zhi,Chunyi, Y1 - 2019/09/13/ PY - 2019/06/14/received PY - 2019/08/11/revised PY - 2019/9/14/entrez KW - Zn dendrites KW - Zn-ion batteries KW - current density KW - electrohealing KW - loading mass SP - e1903778 EP - e1903778 JF - Advanced materials (Deerfield Beach, Fla.) JO - Adv. Mater. Weinheim N2 - The dendritic issue in aqueous zinc-ion batteries (ZBs) using neutral/mild electrolytes has remained an intensive controversy for a long time: some researchers assert that dendrites severely exist while others claim great cycling stability without any protection. This issue is clarified by investigating charge/discharge-condition-dependent formation of Zn dendrites. Lifespan degradation (120 to 1.2 h) and voltage hysteresis deterioration (134 to 380 mV) are observed with increased current densities due to the formation of Zn dendrites (edge size: 0.69-4.37 µm). In addition, the capacity is also found to remarkably affect the appearance of the dendrites as well. Therefore, at small current densities or loading mass, Zn dendrites might not be an issue, while the large conditions may rapidly ruin batteries. Based on this discovery, a first-in-class electrohealing methodology is developed to eliminate already-formed dendrites, generating extremely prolonged lifespans by 410% at 7.5 mA cm-2 and 516% at 10 mA cm-2 . Morphological analysis reveals that vertically aligned Zn dendrites with sharp tips gradually become passivated and finally generate a smooth surface. This developed electrohealing strategy may promote research on metal dendrites in various batteries evolving from passive prevention to active elimination, rescuing in-service batteries in situ to achieve elongated lifetime. SN - 1521-4095 UR - https://www.unboundmedicine.com/medline/citation/31517400/Do_Zinc_Dendrites_Exist_in_Neutral_Zinc_Batteries:_A_Developed_Electrohealing_Strategy_to_In_Situ_Rescue_In-Service_Batteries L2 - https://doi.org/10.1002/adma.201903778 DB - PRIME DP - Unbound Medicine ER -