Water-suspended graphene as electrolyte additive in zinc-air alkaline battery system

Kumar, K. Kishore; Brindha, R.; Nandhini, M. Subha; Selvam, M.; Saminathan, K.; Sakthipandi, K.

doi:10.1007/s11581-019-02924-7

Cited by 48 publications

(17 citation statements)

References 30 publications

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“…It is clear from figure 9a-d that the corrosion potential of the Mg/PN/ZnO sample is moved towards more positive (1.50 V) (anodic region) value compared to Mg/PN (1.34 V) and Mg (1.30 V). The above experimental evidence confirmed that the ZnO thin-layer coating over the Mg and Mg/PN surface could improve corrosion resistance in aqueous electrolytes [39]. Figure 10a-c shows the degradation of the entire surface of the Mg alloy.…”

Section: Corrosion Studiessupporting

confidence: 62%

Evaluation of anticorrosive behaviour of ZnO nanotetra-pods on a AZ91-grade Mg alloy

Brindha¹,

Ajith²,

Nandhini³

et al. 2019

Bull Mater Sci

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Highly cross-linked zinc oxide (ZnO) with the nanorod morphology of tetra-pods was successfully prepared using a microwave irradiation (MWI) technique. In comparison with the available conventional techniques, the MWI technique has the advantage of producing different morphological structures with high purity and in a shorter reaction time. These tetra-pods consist of a ZnO core in the zinc blende from which four ZnO arms emerge in the wurtzite structure. In this investigation, the effects of irradiation times and the growth mechanism of ZnO nanotetra-pods were discussed. The structural, morphological and optical properties of ZnO nanorods were investigated by field emission scanning electron microscopy, X-ray diffraction, an ultra violet visible spectrometry and energy-dispersive spectroscopy. The electrochemical corrosion behaviours of an AZ91-grade Mg alloy and a ZnO/PN nanotetra-pod-coated Mg alloy were investigated. The Tafel plot revealed that the corrosion of Mg drastically decreased on coating with a thin layer of ZnO nanotetra-pods and PN (Mg/PN/ZnO) compared to Mg in a KOH electrolyte.

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Section: Corrosion Studiessupporting

confidence: 62%

Evaluation of anticorrosive behaviour of ZnO nanotetra-pods on a AZ91-grade Mg alloy

Brindha¹,

Ajith²,

Nandhini³

et al. 2019

Bull Mater Sci

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“…Changes in electrolyte concentration, carbonate formation, and electrolyte leakage are some of the issues in Zn‐air batteries that are related to the electrolyte. Moreover, several phenomena at the anode, such as corrosion and passivation, are also related to the type of electrolyte in Zn‐air batteries [89,90,99] . Strategies to address the above problems include the addition of electrolyte additives, utilization of ionic liquids (ILs), and solid/semi‐solid electrolytes [32,35,100] …”

Section: Materials Strategies To Enhance the Cycle‐life Of Zn‐air Batmentioning

confidence: 99%

“…Kumar et al. (2019) then successfully prepared a Zn‐air battery using water‐soluble graphene (WSG) as an additive, which served as the corrosion inhibitor in 1 M KOH [90] . The water‐soluble graphene suppressed the Zn corrosion rate.…”

Section: Materials Strategies To Enhance the Cycle‐life Of Zn‐air Batmentioning

confidence: 99%

Recent Progress in Extending the Cycle‐Life of Secondary Zn‐Air Batteries

et al. 2021

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Secondary Zn‐air batteries with stable voltage and long cycle‐life are of immediate interest to meet global energy storage needs at various scales. Although primary Zn‐air batteries have been widely used since the early 1930s, large‐scale development of electrically rechargeable variants has not been fully realized due to their short cycle‐life. In this work, we review some of the most recent and effective strategies to extend the cycle‐life of Zn‐air batteries. Firstly, diverse degradation routes in Zn‐air batteries will be discussed, linking commonly observed failure modes with the possible mechanisms and root causes. Next, we evaluate the most recent and effective strategies aimed at tackling individual or multiple of these degradation routes. Both aspects of cell architecture design and materials engineering of the electrodes and the electrolytes will be thoroughly covered. Finally, we offer our perspective on how the cycle‐life of Zn‐air batteries can be extended with concerted and tailored research directions to pave the way for their use as the most promising secondary battery system of the future.

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“…Mg, Zn, and Al batteries cannot possess the same electrolytes and mechanisms as LIBs. Mg reacts with simple structured ions (ClO4, BF4), forming passivation layers on the anode surface [467,468]. Most of the passivation layers formed on the Mg anode remain impermeable to Mg 2+ ions but degrade gradually after each cycle.…”

Section: Other Batteries (Mg- Zn- Ca- and Al-based)mentioning

confidence: 99%

Growth Mechanism of Micro/Nano Metal Dendrites and Cumulative Strategies for Countering Its Impacts in Metal Ion Batteries: A Review

et al. 2021

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Metal-ion batteries are capable of delivering high energy density with a longer lifespan. However, they are subject to several issues limiting their utilization. One critical impediment is the budding and extension of solid protuberances on the anodic surface, which hinders the cell functionalities. These protuberances expand continuously during the cyclic processes, extending through the separator sheath and leading to electrical shorting. The progression of a protrusion relies on a number of in situ and ex situ factors that can be evaluated theoretically through modeling or via laboratory experimentation. However, it is essential to identify the dynamics and mechanism of protrusion outgrowth. This review article explores recent advances in alleviating metal dendrites in battery systems, specifically alkali metals. In detail, we address the challenges associated with battery breakdown, including the underlying mechanism of dendrite generation and swelling. We discuss the feasible solutions to mitigate the dendrites, as well as their pros and cons, highlighting future research directions. It is of great importance to analyze dendrite suppression within a pragmatic framework with synergy in order to discover a unique solution to ensure the viability of present (Li) and future-generation batteries (Na and K) for commercial use.

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Water-suspended graphene as electrolyte additive in zinc-air alkaline battery system

Cited by 48 publications

References 30 publications

Evaluation of anticorrosive behaviour of ZnO nanotetra-pods on a AZ91-grade Mg alloy

Evaluation of anticorrosive behaviour of ZnO nanotetra-pods on a AZ91-grade Mg alloy

Recent Progress in Extending the Cycle‐Life of Secondary Zn‐Air Batteries

Growth Mechanism of Micro/Nano Metal Dendrites and Cumulative Strategies for Countering Its Impacts in Metal Ion Batteries: A Review

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