Application of Manganese-Based Materials in Aqueous Rechargeable Zinc-Ion Batteries

Abstract

In recent years, aqueous rechargeable zinc-ion batteries (AZIBs) have attracted more and more attention not only because they use earth-abundant metals but also due to their improved safety and high volumetric energy density. As one type of promising electrode material for AZIBs, manganese-based materials are receiving considerable attention owing to their high theoretical specific capacity, non-toxicity, and low cost. This mini review summarizes the recent advances on the application of manganesebased materials (manganese oxide, manganate, and their composites) in AZIBs. In addition, the methods to enhance their zinc-ion storage properties are summarized and discussed, such as morphology engineering, doping, as well as compositing with other materials. Ultimately, some personal prospects for future research of the manganese-based materials for AZIBs are also proposed.

Stable Manganese‐Oxide Composites as Cathodes for Zn‐Ion Batteries: Interface Activation from In Situ Layer Electrochemical Deposition under 2 V

“…The observed behavior of the different charge‐discharge profiles of the three samples, MnK, MnG, and KMn is similar to that reported previously in literature for Zn‐manganese oxide batteries. [ 29 ]…”

“…The observed behavior of the different charge-discharge profiles of the three samples, MnK, MnG, and KMn is similar to that reported previously in literature for Zn-manganese oxide batteries. [29] Figure 6 gathers the efficiency and specific capacity values for all samples at different rates. Moreover, Table 1 depicts the most relevant values.…”

Zn Metal Anodes for Zn-Ion Batteries in Mild Aqueous Electrolytes: Challenges and Strategies

“…Because of its tunnel or layered structure which allows reversible insertion/extraction of Zn 2+ ions, MnO 2 has been extensively used as a cathode material in the early stages of mild aqueous ZIBs. Furthermore, manganese (Mn)-based oxides have been considered as promising energy storage materials due to their low cost, abundance, environmental friendliness, low toxicity, and numerous valence states (Mn 0 , Mn 2+ , Mn 3+ , Mn 4+ , and Mn 7+ ) [ 79 , 80 ]. The cathode material is prepared as a slurry by mixing it with conductive carbon and polymer binder and dispersing it in the organic solvent.…”

Electrodeposited Layered Sodium Vanadyl Phosphate (NaxVOPO4·nH2O) as Cathode Material for Aqueous Rechargeable Zinc Metal Batteries

“…For instance, the inorganic metal oxides, manganese dioxides (MnO 2 ), and vanadium pentoxides (V 2 O 5 ) are well explored for ARZMBs. − Despite the popularity of these electrode materials in ARZMBs, an ideal cathode material possessing high average operating voltage and cycling stability is still missing in the literature. For instance, the MnO 2 cathode shows a relatively good average operating voltage of around 1.20 to 1.40 V , but suffers from low cycling stability due to the gradual dissolution of the Mn 2+ ions into the aqueous electrolyte during cycling. , Similarly, despite the availability of various types of vanadium oxides (e.g., VO 2 , V 2 O 5 , V 6 O 13 , etc.) as high-capacity cathode materials for ARZMBs, − their average operating voltage is as low as 0.80 V, resulting in low energy density.…”

“…For instance, the MnO 2 cathode shows a relatively good average operating voltage of around 1.20 to 1.40 V 6,11 into the aqueous electrolyte during cycling. 12,13 Similarly, despite the availability of various types of vanadium oxides (e.g., VO 2 , V 2 O 5 , V 6 O 13 , etc.) as high-capacity cathode materials for ARZMBs, 14−16 their average operating voltage is as low as 0.80 V, resulting in low energy density.…”