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Journal ArticleDOI: 10.1039/D0TA11841A

A cation selective separator induced cathode protective layer and regulated zinc deposition for zinc ion batteries

02 Mar 2021-Journal of Materials Chemistry (The Royal Society of Chemistry)-Vol. 9, Iss: 8, pp 4734-4743
Abstract: The widespread application of aqueous rechargeable zinc ion batteries (ARZIBs) is limited by issues from both electrodes, including poor reversibility of the zinc anode and low capacity of the cathode. Here, we report the application of a Zn2+ substituted Nafion separator (Zn-Nafion) in ARZIBs which improves the performance of both the cathode and anode. On the anode side, the Zn-Nafion separator creates a uniform electrical and Zn2+ concentration field near the zinc anode surface, resulting in limited zinc dendrite growth. Therefore, a Zn symmetric cell with a Zn-Nafion separator shows a lower polarization and longer cycle life than those applying a traditional glass fiber separator. On the cathode side, the Zn-Nafion separator increases the contribution of the H+ reaction in the H+/Zn2+ co-insertion process, and causes the randomly distributed byproducts, Zn4SO4(OH)6·nH2O platelets, to transform into a dense solid-electrolyte-interphase layer, which protects the cathode from dissolving into the electrolyte. Thus, the energy density and capacity retention of both zinc full cells (applying commercial V2O5 or α-MnO2 nanowires as the cathode) are dramatically improved by the Zn-Nafion separator. Notably, the Zn//Zn-Nafion//V2O5 cell delivers a high specific capacity of 495.8 mA h g−1 (374.4 W h kg−1) with a low cathode cost (39.23 US$ W h kg−1). Moreover, the Zn-Nafion separator can be recycled at least ten times without performance degradation, which significantly reduces the cost of the battery. The present work can provide a novel insight into cost-effective and high-performance battery technologies.

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Topics: Separator (electricity) (64%), Anode (61%), Cathode (58%) ... show more
Citations
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7 results found


Journal ArticleDOI: 10.1039/D1EE00030F
Ming Li1, Zilan Li1, Xuanpeng Wang1, Jiashen Meng1  +4 moreInstitutions (2)
Abstract: Benefiting from loose assembly conditions, a high level of safety and environmentally friendly characteristics, rechargeable aqueous Zn-ion batteries (AZIBs) have attracted significant attention. The electrochemical kinetics and performance of the AZIBs are greatly affected by water in electrolytes or electrode materials. The corrosion and passivation of the Zn electrode caused by the inevitable solvation process of water molecules can lead to the growth of dendrites, thus resulting in a limited cycle life. Moreover, water in the electrode material, whether in the form of structural water or co-intercalated hydrated cations, can greatly affect the electrochemical behavior due to its small size, high polarity and hydrogen bonding. Unlike previous reports, this review focuses on the roles of water molecules during electrochemical processes in AZIBs. We comprehensively summarize the influencing mechanisms of water molecules during the energy storage process from the perspectives of the electrolyte, Zn anode, and cathode materials, and further include the basic theory, modification methods, and practical applications. The mystery concerning the water molecules and the electrochemical performance of AZIBs is revealed herein, and we also propose novel insights and actionable methods regarding the potential future directions in the design of high-performance AZIBs.

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Topics: Electrochemical kinetics (56%), Electrolyte (51%)

10 Citations


Journal ArticleDOI: 10.1007/S12274-021-3392-1
Buke Wu1, Buke Wu2, Wen Luo1, Ming Li1  +2 moreInstitutions (2)
07 Apr 2021-Nano Research
Abstract: Aqueous rechargeable zinc ion batteries (ARZIBs) have received unprecedented attention owing to the low cost and high-safety merits. However, their further development and application are hindered by the issues of electrodes such as cathode dissolution, zinc anode dendrite, passivation, as well as sluggish reaction kinetics. Designing heterostructure electrodes is a powerful method to improve the electrochemical performance of electrodes by grafting the advantages of functional materials onto the active materials. In this review, various modified heterostructure electrodes with optimized electrochemical performance and wider applications are introduced. Moreover, the synergistic effect between active materials and functional materials are also in-depth analyzed. The specific modification methods are divided into interphase modification (electrode-electrolyte interphase and electrode-current collector interphase) and structure optimization. Finally, the conclusion and future perspective on the optimization mechanism of functional materials, and the cost issue of practical heterostructure electrodes in ARZIBs are also proposed. It is expected that this review can promote the further development of ARZIBs towards practical utility.

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5 Citations


Journal ArticleDOI: 10.1016/J.ENSM.2021.07.044
Xingyu Zhao1, Xinqi Liang1, Yu Li1, Qingguo Chen1  +1 moreInstitutions (1)
Abstract: Zinc-ion batteries (ZIBs) with near-neutral aqueous electrolytes are considered as competitive systems for large-scale energy storage and wearable electronics applications due to their low cost, high security, desirable specific capacity, and environmental friendliness. However, the sluggish electrode reaction kinetics, poor structural stability, severe Zn dendrite growth, and narrow electrochemical stability window in the entire cell still impede the realization of their full potentials. To address these intrinsic issues in aqueous ZIBs, tremendous efforts have been devoted to boosting their electrochemical properties, such as cycling performance, specific capacity, rate capability, and operating voltage. In this review, we start with the discussion of electrode materials and energy storage mechanisms in aqueous ZIBs. Then specific attention is concentrated on the key issues and recent advances in design strategies for optimizing electrochemical performance in aqueous ZIBs systems. Finally, some potential challenges and future research directions to meet practical applications are also provided.

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2 Citations



Journal ArticleDOI: 10.1016/J.ENSM.2021.10.002
Weijun Zhou1, Minfeng Chen1, Qinghua Tian2, Jizhang Chen1  +2 moreInstitutions (3)
Abstract: Benefiting from high safety, low cost, and competitive energy density, aqueous zinc-ion batteries (AZIBs) have become a very promising technique for grid-scale energy storage. However, the life span of AZIBs is severely influenced by the uncontrolled zinc dendritic growth and undesirable side reactions. To address this issue, this work employs cotton-derived cellulose film prepared by a facile filtration method as the separator for AZIBs. The obtained separator offers dense and uniform nanopores, abundant hydroxyl groups, excellent mechanical properties (29.2 MPa in strength and 4.16 GPa in modulus), and large ionic conductivity (56.95 mS cm–1). These properties enable this separator to increase the zinc ion transfer number, lower the desolvation barrier of hydrated zinc ions, reduce the zinc nucleation overpotential, and accelerate the zinc deposition kinetics, in comparison with the commonly used glass fiber separator. Therefore, the cellulose film separator can effectively inhibit zinc dendrites and harmful side reactions. Impressively, the Zn//Zn symmetric cell with this separator remains stable at a cumulative zinc plating capacity of 1000 mAh cm−2 and can endure ultra-large areal capacity of 20 mAh cm−2. The assembled Zn-MnO2 battery also achieves significantly improved rate capability and cyclability compared to those using other separators. This study provides new insights into designing reliable, efficient, and cost-effective separators of electrochemical energy storage devices.

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Topics: Zinc (60%), Separator (oil production) (52%), Overpotential (51%) ... show more

References
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63 results found


Book ChapterDOI: 10.1017/CBO9781139207249.009
01 Jan 2012-

123,310 Citations


Journal ArticleDOI: 10.1038/NENERGY.2016.39
Huilin Pan1, Yuyan Shao1, Pengfei Yan2, Yingwen Cheng1  +9 moreInstitutions (4)
18 Apr 2016-Nature Energy
Abstract: Rechargeable aqueous batteries such as alkaline zinc/manganese oxide batteries are highly desirable for large-scale energy storage owing to their low cost and high safety; however, cycling stability is a major issue for their applications. Here we demonstrate a highly reversible zinc/manganese oxide system in which optimal mild aqueous ZnSO4-based solution is used as the electrolyte, and nanofibres of a manganese oxide phase, α-MnO2, are used as the cathode. We show that a chemical conversion reaction mechanism between α-MnO2 and H+ is mainly responsible for the good performance of the system. This includes an operating voltage of 1.44 V, a capacity of 285 mAh g−1 (MnO2), and capacity retention of 92% over 5,000 cycles. The Zn metal anode also shows high stability. This finding opens new opportunities for the development of low-cost, high-performance rechargeable aqueous batteries. Rechargeable aqueous batteries are attractive owing to their relatively low cost and safety. Here the authors report an aqueous zinc/manganese oxide battery that operates via a conversion reaction mechanism and exhibits a long-term cycling stability.

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Topics: Zinc (55%), Battery (electricity) (54%), Aqueous solution (52%) ... show more

1,222 Citations


Open accessJournal ArticleDOI: 10.1038/NENERGY.2016.119
26 Aug 2016-Nature Energy
Abstract: Although non-aqueous Li-ion batteries possess significantly higher energy density than their aqueous counterparts, the latter can be more feasible for grid-scale applications when cost, safety and cycle life are taken into consideration. Moreover, aqueous Zn-ion batteries have an energy storage advantage over alkali-based batteries as they can employ Zn metal as the negative electrode, dramatically increasing energy density. However, their development is plagued by a limited choice of positive electrodes, which often show poor rate capability and inadequate cycle life. Here we report a vanadium oxide bronze pillared by interlayer Zn2+ ions and water (Zn0.25V2O5⋅nH2O), as the positive electrode for a Zn cell. A reversible Zn2+ ion (de)intercalation storage process at fast rates, with more than one Zn2+ per formula unit (a capacity up to 300 mAh g−1), is characterized. The Zn cell offers an energy density of ∼450 Wh l−1 and exhibits a capacity retention of more than 80% over 1,000 cycles, with no dendrite formation at the Zn electrode. High-performing positive electrode materials are crucial for the development of aqueous Zn-ion batteries. Here the authors report a battery based on reversible intercalation of Zn ions in a layered Zn0.25V2O5⋅nH2O-based positive electrode, which exhibits high-capacity and long-term cycling stability.

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Topics: Potassium-ion battery (60%), Battery (electricity) (57%), Intercalation (chemistry) (52%) ... show more

1,184 Citations


Journal ArticleDOI: 10.1038/S41560-018-0108-1
Zachary P. Cano1, Dustin Banham2, Siyu Ye2, Andreas Hintennach3  +3 moreInstitutions (4)
01 Apr 2018-Nature Energy
Abstract: Today’s electric vehicles are almost exclusively powered by lithium-ion batteries, but there is a long way to go before electric vehicles become dominant in the global automotive market. In addition to policy support, widespread deployment of electric vehicles requires high-performance and low-cost energy storage technologies, including not only batteries but also alternative electrochemical devices. Here, we provide a comprehensive evaluation of various batteries and hydrogen fuel cells that have the greatest potential to succeed in commercial applications. Three sectors that are not well served by current lithium-ion-powered electric vehicles, namely the long-range, low-cost and high-utilization transportation markets, are discussed. The technological properties that must be improved to fully enable these electric vehicle markets include specific energy, cost, safety and power grid compatibility. Six energy storage and conversion technologies that possess varying combinations of these improved characteristics are compared and separately evaluated for each market. The remainder of the Review briefly discusses the technological status of these clean energy technologies, emphasizing barriers that must be overcome. Recent years have seen significant growth of electric vehicles and extensive development of energy storage technologies. This Review evaluates the potential of a series of promising batteries and hydrogen fuel cells in their deployment in automotive electrification.

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Topics: Electric vehicle (64%), Energy storage (57%), Automotive industry (53%) ... show more

997 Citations


Journal ArticleDOI: 10.1038/S41563-018-0063-Z
Fei Wang1, Fei Wang2, Oleg Borodin1, Tao Gao2  +7 moreInstitutions (3)
16 Apr 2018-Nature Materials
Abstract: Metallic zinc (Zn) has been regarded as an ideal anode material for aqueous batteries because of its high theoretical capacity (820 mA h g–1), low potential (−0.762 V versus the standard hydrogen electrode), high abundance, low toxicity and intrinsic safety. However, aqueous Zn chemistry persistently suffers from irreversibility issues, as exemplified by its low coulombic efficiency (CE) and dendrite growth during plating/ stripping, and sustained water consumption. In this work, we demonstrate that an aqueous electrolyte based on Zn and lithium salts at high concentrations is a very effective way to address these issues. This unique electrolyte not only enables dendrite-free Zn plating/stripping at nearly 100% CE, but also retains water in the open atmosphere, which makes hermetic cell configurations optional. These merits bring unprecedented flexibility and reversibility to Zn batteries using either LiMn2O4 or O2 cathodes—the former deliver 180 W h kg–1 while retaining 80% capacity for >4,000 cycles, and the latter deliver 300 W h kg–1 (1,000 W h kg–1 based on the cathode) for >200 cycles.

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Topics: Electrolyte (53%), Anode (53%), Zinc (52%) ... show more

820 Citations


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