Performance of Thixotropic Gel Electrolytes in the Rechargeable Aqueous Zn/LiMn<sub>2</sub>O<sub>4</sub> Battery

Hoang, Tuan K.A.; Lu, Changyu; Ghaznavi, Mahmoudreza; Zhao, Hongbin; Chen, P.

doi:10.1021/acssuschemeng.6b02553

Cited by 45 publications

(31 citation statements)

References 53 publications

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“…When using the 5 %FS gel electrolyte, the deposit looked more flat than for the others. The effect of gel electrolytes on dendrite suppression was previously published by our group . However, the 5 % FS gel electrolyte exhibited slightly higher corrosion‐current density and lower corrosion potential (Figure , Table S1), and, therefore, it was necessary to introduce a corrosion inhibitor into this gel electrolyte.…”

Section: Resultsmentioning

confidence: 99%

“…The effect of gel electrolytes on dendrite suppression was previously published by our group. [40] However, the 5% FS gel electrolyte exhibited slightly higher corrosion-current density and lower corrosion potential ( Figure 3, Ta ble S1), and, therefore, it was necessary to introduce ac orrosion inhibitor into this gel electrolyte. The 0.2 wt % pyrazole-containinge lectrolyte and its gel electrolyte (the 5%FS + 0.2%P) supported flake-like growth of Zn.…”

Section: Resultsmentioning

confidence: 99%

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Sustainable Gel Electrolyte Containing Pyrazole as Corrosion Inhibitor and Dendrite Suppressor for Aqueous Zn/LiMn₂O₄ Battery

et al. 2017

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The Zn anode in secondary aqueous batteries suffers from dendrite formation and corrosion. In this work, dendrite formation was suppressed by using a simple but new gel electrolyte containing fumed silica and an additive. The dendrite suppression was evidenced by chronoamperometry and ex situ scanning electron microscopy examinations. Pyrazole was implemented as the additive in the electrolyte. It was found that the presence of 0.2 wt % pyrazole in the electrolyte helped minimize both corrosion and dendrite formation. The Zn/LiMn O battery using pyrazole-containing gel electrolytes exhibited high cyclability up to 85 % capacity retention after 500 charge-discharge cycles at 4C. This was 8 % higher than the performance of the reference battery (using aqueous electrolyte containing 2 m Li SO and 1 m ZnSO ). Furthermore, self-discharge of the battery with the pyrazole-containing gel electrolyte was suppressed, as evidenced by an open-circuit voltage loss that was 20 % lower than for the reference battery after 24 h monitoring. Float-charge current density under constant voltage (2.1 V) also significantly decreased from approximately 8.0 to 3-6 μA.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Sustainable Gel Electrolyte Containing Pyrazole as Corrosion Inhibitor and Dendrite Suppressor for Aqueous Zn/LiMn₂O₄ Battery

et al. 2017

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“…The specific capacity maintains 92% after 1000 cycles (Figure b). Generally, using the hybrid aqueous electrolyte (Na 2 SO 4 , MnSO 4 , and ZnSO 4 ) could enhance the electrochemical performance of the alkali manganese oxide, including LiMn 2 O 4 , KMn 8 O 16 , and K 0.224 MnO 1.947 ·0.887H 2 O …”

Section: Manganese‐based Cathodesmentioning

confidence: 99%

Recent Advances and Prospects of Cathode Materials for Rechargeable Aqueous Zinc‐Ion Batteries

Chen

Mai

2019

Adv Materials Inter

214

124

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attention. [9][10][11] AZIBs are considered as one of the most ideal candidates for largescale energy storage owing to their following advantages:i) The excellent properties of zinc: According the data in Table 1, the abundance of zinc in the earth's crust is 79 ppm, and ranks fourth in the world metal production, so zinc has a low market price. Zn metal anode has good electrical conductivity (5.91 µΩ cm), high volumetric energy density (5851 mAh cm −3 ), high theoretical capacity (819 mAh g −1 ), and relatively low redox potential (−0.76 V vs standard hydrogen electrode) which is more suitable in aqueous solution. In addition, multivalent zinc ion can transfer two electrons to facilitate more energy storage than the univalent batteries. [12] At the same time, the ionic radius of zinc ions is 0.74 Å, which is smaller than that of sodium ions (1.02 Å) and close to that of lithium ions (0.69 Å). Moreover, zinc is the essential trace element for human body. [9] In brief, Zn has the superiorities of low cost, low-toxicity, abundant resource, easily recycle, and environmental friendliness.ii) The higher ionic conductivity and safety of aqueous electrolytes: The aqueous electrolytes offer two orders of higher magnitude ionic conductivities (≈1 S cm −1 ) than that of organic electrolytes (≈10 −2 -10 −3 S cm −1 ), so aqueous battery usually has higher power density. [3,13] Meanwhile, the organic electrolytes are usually toxic and flammable, while the aqueous electrolytes are nontoxic and safe, which can mitigate the environmental disruption and recycling costs. iii) The facile assembly process: AZIBs can be assembled in the air condition owing to the stability of zinc anode and aqueous electrolyte. Compared with the batteries assembled in the inert-gas glove box, the manufacturing costs of ZIBs are greatly reduced. The facile manufacture and recycling of AZIBs is an important advantage in the large-scale storage applications.Combining the above advantages, low-cost, safe, and green next-generation AZIBs are suitable specifically for large-scale stationary storage applications. So far, AZIBs are still at the infancy stage. The related researches mainly focused on cathode materials. We count the publication numbers of the reported cathodes for AZIBs in the period from 2012 to February 2019 (1, Supporting Information). As illustrated in Figure 1a, the number of annual publications on cathodes for AZIBs continues to increase rapidly in the recent years. However, in the preliminary stage, Electrochemical energy storage devices will definitely play a vital role in the future energy landscape of the world. The innovation of electrode materials is a key task for the breakthrough of present bottleneck faced by electrochemical energy storage devices. Aqueous zinc-ion batteries (AZIBs) are gaining rapid attention, and they offer tremendous opportunities to explore the low-cost, safe, and next-generation green batteries for large-scale stationary storage applications. In this review, the authors aim to give a comprehensive overview ...

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“…This electrolyte holds also the ability to depress Zn dendrite growth and corrosion, guaranteeing the flexible ZnÀ MnO 2 battery high cycling stability, rate capability, and durability. By adding thixotropic fumed silica (FS) and non-thixotropic β-cyclodextrin (CD) into ZnSO 4 + Li 2 SO 4 liquid electrolyte, Hoang and Chen et al [244] developed a FS + CD composite gel electrolyte for hybrid aqueous batteries. This gel electrolyte can also enhance the specific capacity and cycling stability of the batteries, due to the suppression of Zn dendrite growth.…”

Section: Hydrogel Electrolytesmentioning

confidence: 99%

Rechargeable Aqueous Zinc‐Ion Batteries with Mild Electrolytes: A Comprehensive Review

Kang

Cui

Zhang

et al. 2020

Batteries & Supercaps

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Prof. Jiang's research focuses on energy storage devices, including lithium, sodium, and zinc ion batteries, which are supported by NSFC and major basic research projects of Shandong natural science foundations. Figure 1. a) Diagram of potential-pH value (Pourbaix diagram) of Zn in aqueous solutions. Reproduced with permission from Ref. [25]. Copyright 2015, Wiley-VCH. b) Discharge mechanism of a ZnÀ MnO 2 alkaline battery depicting main side reactions on both electrodes. Reproduced with permission from Ref. [16]. Copyright 2004, American Chemical Society. c) In situ images of electro-plated zinc deposits in a 0.3 cm s À 1 flowing KOH aqueous electrolyte at deposition potential of À 2.55 V. The red parts highlight new Zn deposits growing during the time intervals. Reproduced with permission from Ref. [27].

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Performance of Thixotropic Gel Electrolytes in the Rechargeable Aqueous Zn/LiMn₂O₄ Battery

Cited by 45 publications

References 53 publications

Sustainable Gel Electrolyte Containing Pyrazole as Corrosion Inhibitor and Dendrite Suppressor for Aqueous Zn/LiMn₂O₄ Battery

Sustainable Gel Electrolyte Containing Pyrazole as Corrosion Inhibitor and Dendrite Suppressor for Aqueous Zn/LiMn₂O₄ Battery

Recent Advances and Prospects of Cathode Materials for Rechargeable Aqueous Zinc‐Ion Batteries

Rechargeable Aqueous Zinc‐Ion Batteries with Mild Electrolytes: A Comprehensive Review

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Performance of Thixotropic Gel Electrolytes in the Rechargeable Aqueous Zn/LiMn2O4 Battery

Cited by 45 publications

References 53 publications

Sustainable Gel Electrolyte Containing Pyrazole as Corrosion Inhibitor and Dendrite Suppressor for Aqueous Zn/LiMn2O4 Battery

Sustainable Gel Electrolyte Containing Pyrazole as Corrosion Inhibitor and Dendrite Suppressor for Aqueous Zn/LiMn2O4 Battery

Recent Advances and Prospects of Cathode Materials for Rechargeable Aqueous Zinc‐Ion Batteries

Rechargeable Aqueous Zinc‐Ion Batteries with Mild Electrolytes: A Comprehensive Review

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Performance of Thixotropic Gel Electrolytes in the Rechargeable Aqueous Zn/LiMn₂O₄ Battery

Sustainable Gel Electrolyte Containing Pyrazole as Corrosion Inhibitor and Dendrite Suppressor for Aqueous Zn/LiMn₂O₄ Battery

Sustainable Gel Electrolyte Containing Pyrazole as Corrosion Inhibitor and Dendrite Suppressor for Aqueous Zn/LiMn₂O₄ Battery