Cathode materials for rechargeable zinc-ion batteries: From synthesis to mechanism and applications

The development of advanced cathode materials for aqueous the zinc ion battery (ZIB) represents a crucial step toward building future large‐scale green energy conversion and storage systems. Recently, significant progress has been achieved in the development of manganese‐based oxides for ZIB via defect engineering, whereby the intrinsic capacity and energy density have been enhanced. In this review, an overview of the recent progress in the defect engineering of manganese‐based oxides for aqueous ZIBs is summarized in the following order: 1) the structures and properties of the commonly used manganese‐based oxides, 2) the classification of the various types of defect engineering commonly reported, 3) the various strategies used to create defects in materials, and 4) the effects of the various types of defect engineering on the electrochemical performance of manganese‐based oxides. Finally, a perspective on the defect engineering of manganese‐based oxides is proposed to further enhance their electrochemical performance as a ZIB cathode.

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“…As such, in the recent years, researchers have been exploring various materials that can potentially work as the ZIB cathodes. [ 23–25 ]…”

Section: Introductionmentioning

confidence: 99%

Defect Engineering in Manganese‐Based Oxides for Aqueous Rechargeable Zinc‐Ion Batteries: A Review

Xiong

Zhang

Lee

et al. 2020

Advanced Energy Materials

287

150

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“…When the scan rate increased, it resulted in rapid electron transfer and thereby fast kinetics of the reaction, which is diffusion-controlled [ 17 ]. The potential separation between cathodic and anodic peaks demonstrates the irreversibility of the chemical reaction [ 30 ]. In the case of an irreversible reaction, at low scan rates (slower electron transfer), more zincate ions tend to be produced and dissolve in the electrolyte due to the high contact time with hydroxide ions.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive

Khezri

Hosseini

Lahiri

et al. 2020

IJMS

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Zinc–air batteries (ZABs) offer high specific energy and low-cost production. However, rechargeable ZABs suffer from a limited cycle life. This paper reports that potassium persulfate (KPS) additive in an alkaline electrolyte can effectively enhance the performance and electrochemical characteristics of rechargeable zinc–air flow batteries (ZAFBs). Introducing redox additives into electrolytes is an effective approach to promote battery performance. With the addition of 450 ppm KPS, remarkable improvement in anodic currents corresponding to zinc (Zn) dissolution and limited passivation of the Zn surface is observed, thus indicating its strong effect on the redox reaction of Zn. Besides, the addition of 450 ppm KPS reduces the corrosion rate of Zn, enhances surface reactions and decreases the solution resistance. However, excess KPS (900 and 1350 ppm) has a negative effect on rechargeable ZAFBs, which leads to a shorter cycle life and poor cyclability. The rechargeable ZAFB, using 450 ppm KPS, exhibits a highly stable charge/discharge voltage for 800 cycles. Overall, KPS demonstrates great promise for the enhancement of the charge/discharge performance of rechargeable ZABs.

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“…Positively, in 1 M ZnSO 4 , e‐Zn particles were able to mostly maintain their structure and have a longer cycle life than other proposed Zn anodes to date. This suggests that e‐Zn might result in a very high performing Zn‐ion battery if paired with a suitable cathode material, though it should be noted that there are still serious problems on the cathode side of Zn‐ion batteries that must be solved before practical cells can be achieved [34,70] …”

Section: Resultsmentioning

confidence: 99%

Design of Highly Reversible Zinc Anodes for Aqueous Batteries Using Preferentially Oriented Electrolytic Zinc

Faegh

Hayman

et al. 2020

Batteries & Supercaps

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Rechargeable zinc‐based batteries have attracted a growing interest due to their intrinsic safety, low environmental impact and potentially very low cost. However, there still remains significant hurdles to achieve cells of commercial interest. Conventional commercial Zn anodes are formed from large, polycrystalline particles with limited control over the shape and size. In this study, preferentially oriented electrolytic Zn (e‐Zn) particles with hexagonal shape and controlled size (∼100 μm) were synthesized and physically characterized by SEM, XRD and BET techniques. The corrosion, discharge and cycling behavior of e‐Zn particles were analyzed in KOH alkaline media. It was found that preferentially oriented e‐Zn particles with low surface area have lower corrosion than Zn powder and 99 % reduced corrosion rate with respect to polycrystalline Zn wire. Furthermore, e‐Zn electrodes were successfully scaled up and showed remarkable reversibility in symmetric cells at a high rate of 20 mA cm−2 for 640 h. e‐Zn/KOH/MnO2 full cells were also demonstrated with ca. 6 times longer cycle life than Zn powder with a lower H2 gassing rate at 10 % Zn DoD and C/20 rate. In addition, a comparison between alkaline vs. mild acidic electrolyte was made in terms of reversibility and structural changes of preferentially oriented e‐Zn electrodes where superior cycling was observed in ZnSO4 for 2000 h.

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Cathode materials for rechargeable zinc-ion batteries: From synthesis to mechanism and applications

Cited by 130 publications

References 174 publications

Defect Engineering in Manganese‐Based Oxides for Aqueous Rechargeable Zinc‐Ion Batteries: A Review

Defect Engineering in Manganese‐Based Oxides for Aqueous Rechargeable Zinc‐Ion Batteries: A Review

Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive

Design of Highly Reversible Zinc Anodes for Aqueous Batteries Using Preferentially Oriented Electrolytic Zinc

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