Stability Enhancement of Zinc‐Ion Batteries Using Non‐Aqueous Electrolytes

Kao-ian, Wathanyu; Mohamad, Ahmad Azmin; Liu, Wei‐Ren; Pornprasertsuk, Rojana; Siwamogsatham, Siwaruk; Kheawhom, Soorathep

doi:10.1002/batt.202100361

Cited by 46 publications

(28 citation statements)

References 112 publications

(257 reference statements)

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“…[15,16] Unlike conventional electrolytes with solvated cations and anions through simple dissolving, the eutectic electrolytes contain complex anions and cations, which are formed through the strong interactions between the components. [17][18][19] For example, 2.0 M ZnCl 2 aqueous electrolyte contains solvated Zn ] + cations. [20] Compared with the traditional electrolytes, the eutectic electrolytes possess many characteristics, such as structural flexibility, good thermal/chemical stability, low vapor pressure, and wide potential windows.…”

Section: Introductionmentioning

confidence: 99%

“…When DESs is applied as the electrolyte for batteries, it is usually called eutectic electrolyte [15, 16] . Unlike conventional electrolytes with solvated cations and anions through simple dissolving, the eutectic electrolytes contain complex anions and cations, which are formed through the strong interactions between the components [17–19] . For example, 2.0 M ZnCl 2 aqueous electrolyte contains solvated Zn 2+ cations and Cl − anions, while AlCl 3 /acetamide (AcA) eutectic electrolyte has AlCl 4 − and Al 2 Cl 7 − anions and [AlCl 2 (AcA) 2 ] + cations [20] .…”

Section: Introductionmentioning

confidence: 99%

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Eutectic Electrolyte with Unique Solvation Structure for High‐Performance Zinc‐Ion Batteries

et al. 2022

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Zinc-ion batteries (ZIB) present great potential in energy storage due to low cost and high safety. However, the poor stability, dendrite growth, and narrow electrochemical window limit their practical application. Herein, we develop a new eutectic electrolyte consisting of ethylene glycol (EG) and ZnCl 2 for dendrite-free and long-lifespan ZIBs. The EG molecules participate in the Zn 2 + solvation via coordination and hydrogen-bond interactions. Optimizing the ZnCl 2 /EG molar ratio (1 : 4) can strengthen intermolecular interactions to form [ZnCl(EG)] + and [ZnCl(EG) 2 ] + cations. The dissociation-reduction of these complex cations enables the formation of a Cl-rich organic-inorganic hybrid solid electrolyte interphase film on a Zn anode, realizing highly reversible Zn plating/stripping with long-term stability of � 3200 h. Furthermore, the polyaniline j j Zn cell manifests decent cycling performance with � 78 % capacity retention after 10 000 cycles, and the assembled pouch cell demonstrates high safety and stable capacity. This work opens an avenue for developing eutectic electrolytes for high-safety and practical ZIBs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Eutectic Electrolyte with Unique Solvation Structure for High‐Performance Zinc‐Ion Batteries

et al. 2022

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“…Rechargeable aqueous zinc battery with abundant zinc resources, cheap and readily available, high environmental stability, and aqueous electrolysis . The metal zinc anode not only has a relatively small electrode potential but also has a sufficiently high mass-specific capacity (820 mAh/g) and volume-specific capacity (5851 mAh/cm 3 ) . The cathode materials of aqueous zinc batteries are mainly Mn-based materials, V-based compounds, and Prussian blue compounds .…”

Section: Introductionmentioning

confidence: 99%

“…14 The metal zinc anode not only has a relatively small electrode potential but also has a sufficiently high mass-specific capacity (820 mAh/g) and volume-specific capacity (5851 mAh/cm 3 ). 15 The cathode materials of aqueous zinc batteries are mainly Mn-based materials, 16 V-based compounds, 17 and Prussian blue compounds. 18 Mn-based compounds have high discharge capacity and specific energy, but during the phase transition of zinc-ion intercalation, Mn 2+ dissolves during cycling, resulting in limited battery life.…”

Section: Introductionmentioning

confidence: 99%

Review on Recent Developments, Challenges, and Perspectives of Mn-Based Oxide Cathode Materials for Aqueous Zinc-Ion Batteries and the Status of Mn Resources in China

Lin

Zhang

2023

Energy Fuels

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Hydroelectrochemical energy storage has the characteristics of high energy density, fast response time, low maintenance cost, flexible and convenient installation, etc., and is a hot development direction of future energy storage technology. Aqueous zinc-ion batteries (AZIBs) with neutral or near-neutral electrolytes have attracted much attention due to their advantages of safety, reliability, abundant resources, and environmental friendliness. Mn-based oxides are widely used as cathode materials for AZIBs due to their high theoretical specific capacity and low toxicity. However, Mn-based oxides face structural collapse during charge–discharge cycles, resulting in rapid capacity decay. This paper reviews the electrochemical characteristics of different Mn-based oxides as cathodes, the energy storage mechanism involved in the charging and discharging process of Mn-based AZIBs, and the advantages of Mn resources. At the same time, combined with the latest research progress, the existing problems and feasible improvement methods are pointed out, and the future development trend is prospected.

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“…[7,8] The behavior of Zn plating and stripping is sophisticated and can be modulated by several co-existing and interrelated factors, including the electrode configurations, [9][10][11] the charging/discharging protocols, [12] and the electrolyte formulations. [13][14][15][16][17] For example, it has been demonstrated that the anode morphology can affect the dendrite growth. By fabricating a Zn anode with a 3D sponge structure, the Ni-Zn cells could exhibit an improved cycle performance and a suppressed dendrite formation.…”

mentioning

confidence: 99%

Structural, Dynamic, and Chemical Complexities in Zinc Anode of an Operating Aqueous Zn‐Ion Battery

Qian

Zan

et al. 2022

Advanced Energy Materials

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motivated significant efforts to exploit alternative electrochemical processes for energy storage in order to meet the evergrowing demand for efficient energy storage. A promising candidate for EES is the rechargeable Zn aqueous battery, which is earth abundant, low cost, safe, and environmentally friendly. [3][4][5][6] However, despite of enormous research and engineering investments, the practical implementation and deployment of Zn aqueous batteries are still hindered by challenges concerning several different aspects of the electrochemical reaction involving Zn-ions.One of the main obstacles is that the Zn anode suffers from a low Coulombic efficiency, and the underlying mechanism is related with the non-ideal reversibility of the Zn plating/stripping process. [7,8] The behavior of Zn plating and stripping is sophisticated and can be modulated by several co-existing and interrelated factors, including the electrode configurations, [9][10][11] the charging/discharging protocols, [12] and the electrolyte formulations. [13][14][15][16][17] For example, it has been demonstrated that the anode morphology can affect the dendrite growth. By fabricating a Zn anode with a 3D sponge structure, the Ni-Zn cells could exhibit an improved cycle performance and a suppressed dendrite formation. [18] Plating with high current density can exacerbate the electrochemical polarization and tends to form Zn dendrites. As a mitigation, the Zn dendrites can be dissolved by applying a small current during the stripping process. [12] In addition, surface chemistry on the anode plays a critical role in the Zn plating/stripping process. [19,20] The reactions involving the solid-liquid interphase are often complicated and may vary depending on the electrolyte used. For example, in alkaline electrolytes, Zn electrodes suffer from surface self-corrosion, in which metallic Zn is oxidized into a Zn (OH) 4 2− ion and is further decomposed into the by-product ZnO during plating. The insulating ZnO layer on the Zn electrode surface could impede the Zn-ion transfer between electrolyte and electrode. [21] Corrosion of the Zn electrode could also occur in mild electrolytes, for example, ZnSO 4 aqueous electrolyte, but through different surface chemical reactions. [22] The insoluble Zn 4 SO 4 (OH) 6 •xH 2 O could be deposited on the electrode surface in ZnSO 4 electrolyte, together with irreversible H 2 release, resulting in poor Coulombic efficiency and capacity fade. [23][24][25] To tackle this issue, Cao et al. used an alkylammonium Aqueous Zn-ion battery is a promising technology for electrochemical energy storage. The formation of Zn dendrites, however, can jeopardize the cell cycle life and thus, hinders the industrial adoption of this technology. A fundamental understanding of the kinetic mechanisms is crucial for improving the Zn-ion battery. Here, in situ and operando X-ray microscopy methods are utilized to visualize the Zn plating and stripping behaviors under different electrochemical conditions. It is demonstrated that the substrate cur...

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Stability Enhancement of Zinc‐Ion Batteries Using Non‐Aqueous Electrolytes

Cited by 46 publications

References 112 publications

Eutectic Electrolyte with Unique Solvation Structure for High‐Performance Zinc‐Ion Batteries

Eutectic Electrolyte with Unique Solvation Structure for High‐Performance Zinc‐Ion Batteries

Review on Recent Developments, Challenges, and Perspectives of Mn-Based Oxide Cathode Materials for Aqueous Zinc-Ion Batteries and the Status of Mn Resources in China

Structural, Dynamic, and Chemical Complexities in Zinc Anode of an Operating Aqueous Zn‐Ion Battery

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