Sustainable high-energy aqueous zinc–manganese dioxide batteries enabled by stress-governed metal electrodeposition and fast zinc diffusivity

Abstract

The re-evaluation of zinc (Zn)-based energy storage systems satisfied the emerging demands in safety and cost-effectiveness. However, the long-standing challenges lie in the dendritic Zn morphology and consequent cell short-circuit,...

Highly-reversible and recyclable zinc metal batteries achieved by inorganic/organic hybrid separators with finely tunable hydrophilic–hydrophobic balance

“…The above-mentioned calculation indicates that FS is also capable of accelerating the Zn plating process. Moreover concentration polarization can be alleviated in the outer Helmholtz plane thanks to the regulation of the P/FS-Z separator, which can be confirmed by the negative shift of potential of zero charge (PZC) and a thicker double layer based on the differential capacitance tests 50 (Fig. S18b, ESI†).…”

Selectively etching-off the highly reactive (002) Zn facet enables highly efficient aqueous zinc-metal batteries

“…26–29 Despite advances that have been made during the last several years, these afore-mentioned strategies, however, still have several inherent drawbacks/problems which were neglected for a long time and need further investigation. 30–32 For example, preparing Zn metal with a high proportion of the (002) Zn crystal plane or adjusting the (002) direction deposition of Zn-ions is mainly to take advantage of the excellent electrochemical stability of Zn metal with strong (002) Zn crystal planes. 33–35 Yet, these works fail to consider the chemical stability of Zn metal with strong (002) Zn crystal planes, or in other words, the chemical stability of (002) Zn in aqueous electrolytes.…”

Interfacial Regulation via Anionic Surfactant Electrolyte Additive Promotes Stable (002)‐Textured Zinc Anodes at High Depth of Discharge

“…[1] Aqueous zincion batteries (AZIBs) are regarded as an alternative candidate to state-of-the-art lithium-ion batteries due to their merits of high inherent safety, high theoretical capacity (820 mAh g −1 ; 5855 mAh cm −3 ), lower redox potential (−0.76 V vs standard hydrogen electrode), cost-effectiveness, and environmental benignity. [2][3][4] Nevertheless, AZIBs encounter the problem of low depth of discharge (DOD) of Zn anode, leading to severe zinc resource waste DOI: 10.1002/aenm.202301999 and energy density reduction. [5] The DOD of Zn anode refers to the utilization rate of the anode in the electrode reaction, which profoundly affects the capacity attenuation and energy density of the battery.…”