The dominant role of Mn2+ additive on the electrochemical reaction in ZnMn2O4 cathode for aqueous zinc-ion batteries

Soundharrajan, Vaiyapuri; Sambandam, Balaji; Kim, Sungjin; Islam, Saiful; Jo, Jeonggeun; Kim, Seokhun; Mathew, Vinod; Sun, Yang Kook

doi:10.1016/j.ensm.2019.12.021

Cited by 229 publications

(132 citation statements)

References 45 publications

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“…With the pre‐addition of Mn 2+ in the electrolyte, a shift in the dissolution equilibrium of Mn 2+ being dissolved from MnO 2 cathode to the electrolyte becomes possible, which eventually suppresses the continuous Mn 2+ dissolution from MnO 2 cathode to the electrolyte substantially [51,55] . This method can moderately stabilize the MnO 2 cathode in the battery system [116] …”

Section: Electrolyte Selectionmentioning

confidence: 99%

Recent Development of Mn‐based Oxides as Zinc‐Ion Battery Cathode

2021

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Manganese‐based oxide is arguably one of the most well‐studied cathode materials for zinc‐ion battery (ZIB) due to its wide oxidation states, cost‐effectiveness, and matured synthesis process. As a result, there are numerous reports that show significant strides in the progress of Mn‐based oxides as ZIB cathode. However, ironically, due to the sheer number of Mn‐based oxides that have been published in recent years, there remain certain contemplations with regards to the electrochemical performance of each type of Mn‐based oxides and their performance comparison among various Mn polymorphs and oxidation states. Thus, to provide a clearer indication of the development of Mn‐based oxides, the recent progress in Mn‐based oxides as ZIB cathode was summarized systematically in this Review. More specifically, (1) the classification of Mn‐based oxides based on the oxidation states (i. e., MnO2, Mn3O4, Mn2O3, and MnO), (2) their respective polymorphs (i. e., α‐MnO2 and δ‐MnO2) as ZIB cathode, (3) the modification strategies commonly employed to enhance the performance, and (4) the effects of these modification strategies on the performance enhancement were reviewed. Lastly, perspectives and outlook of Mn‐based oxides as ZIB cathode were discussed at the end of this Review.

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Section: Electrolyte Selectionmentioning

confidence: 99%

Recent Development of Mn‐based Oxides as Zinc‐Ion Battery Cathode

2021

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“…The pre-added Mn 2+ additive ions are beneficial to the storage of active zinc on the electrode surface. Zn 2+ insertion in the surface undissolved MnO x layer, this phenomenon was found in spinel-type ZnMn 2 O 4 by Kim et al [67] as follows:…”

Section: Deposition and Dissolution Reaction Mechanismmentioning

confidence: 85%

Recent advances and perspectives on vanadium- and manganese-based cathode materials for aqueous zinc ion batteries

Liu

et al. 2021

Journal of Energy Chemistry

193

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“…This was an immediate indication about the consequences of using electrochemically active material in the liquid phase of an AZIB. Considering that the research on AZIBs has often adopted coin cell fabrication techniques from Li-ion battery research, including the use of SS components, [26,27,[39][40][41][42][43][44] the testing methodology needs thorough evaluation to prevent interference with the true phenomena during cycling. Therefore, potential side reactions with the supporting current collector were studied to eliminate their influence on cathode performance.…”

Section: Establishing the Azib Testing Environmentmentioning

confidence: 99%

Employing the Dynamics of the Electrochemical Interface in Aqueous Zinc‐Ion Battery Cathodes

Becknell

Lopes

Hatsukade

et al. 2021

Adv Funct Materials

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Intrinsically stable materials are desirable for constructing energy storage devices, which aim to demonstrate durability under the harsh electrochemical conditions that are detrimental to their lifespan. However, we demonstrate here that the intrinsic instability of an electrochemical interface can be converted from an obstacle into an advantage. In aqueous zinc-ion batteries, manganese oxide (MnO 2 ) exhibits considerable dissolution even in electrolyte containing Mn 2+ salt. Balancing with redeposition alleviates the harmful impact of dissolution on performance and alters the trajectory of the active phase.Inclusion of Mn 2+ salt in the electrolyte induces MnO 2 deposition on all conductive surfaces, requiring that distracting side reactions be eliminated to isolate the dynamics of the active phase. Under conditions favoring dissolution, capacity decreases dramatically and a highly crystalline tetragonal ZnMn 2 O 4 phase forms, while redeposition helps maintain capacity and promotes a disordered cubic Zn-rich phase. Ultimately, this work aims to illuminate a path forward to unlock the potential of batteries made with materials that are fundamentally unstable in their operating environment.

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The dominant role of Mn2+ additive on the electrochemical reaction in ZnMn2O4 cathode for aqueous zinc-ion batteries

Cited by 229 publications

References 45 publications

Recent Development of Mn‐based Oxides as Zinc‐Ion Battery Cathode

Recent Development of Mn‐based Oxides as Zinc‐Ion Battery Cathode

Recent advances and perspectives on vanadium- and manganese-based cathode materials for aqueous zinc ion batteries

Employing the Dynamics of the Electrochemical Interface in Aqueous Zinc‐Ion Battery Cathodes

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