Regulating the electronic structure of manganese-based materials to optimize the performance of zinc-ion batteries

Abstract

Manganese-based materials are considered as one of the most promising energy storage cathode materials for zinc-ion batteries (ZIBs). In order to achieve major breakthroughs in commercialization, optimizing their poor inherent...

Advanced Aqueous Zinc-Ion Batteries Enabled by Three-Dimensional Amorphous Vanadium Pentoxide@Graphene Microspheres

“…Aqueous zinc-ion batteries (AZIBs) have emerged as a promising option for large-scale energy storage in view of low cost, inherent safety, low redox potential, and high theoretical capacity. − Nevertheless, exploiting efficient cathode materials with both eminent capacity and longest possible cycle is still one of the main constraints for the progress of AZIBs. Recently, various materials including Prussian blue analogues, − transition metal sulfide, , manganese-based oxides, − and vanadium-based oxides − have been extensively studied. Among them, vanadium pentoxide (V 2 O 5 ), as a representative of vanadium-based oxides, possesses a high theoretical capacity and low cost. − Nevertheless, the high crystalline V 2 O 5 usually only allows Zn 2+ ions to diffuse along specific paths, leading to unsatisfactory capacity. ,− Moreover, this process is often accompanied by irreversible structural damage, which limits the cycle life of V 2 O 5 .…”

2D Layered MnO2 with an Ultralarge Interlayer Spacing for Aqueous Zinc Ion Batteries

“…In particular, the preintercalation strategy has proven to be a fundamental and highly effective approach for enhancing the capacity, cycle stability, and rate capability of a δ-MnO 2 cathode. 17,18 Preintercalated ions or molecules play a crucial role in increasing the interlayer spacing, facilitating ion transfer, and serving as "structural pillars" to prevent structural collapse. 19−23 Meanwhile, preintercalation can efficiently fine-tune the electronic structure of the host materials, leading to significant acceleration of electron-transfer processes.…”

Controllable Synthesis of Skeletonized V2O5 Microspheres Derived from a V-MOF for Aqueous Zinc-Ion Batteries

“…Recently, aqueous zinc-ion batteries (AZIBs) have gained widespread attention for their prominent merits, such as nontoxicity, abundant metallic zinc resources, and low redox potential. – The major cathode materials used in ZIBs comprise manganese-based materials, vanadium-based materials, Prussian blue analogues, and organic . Among them, vanadium-based materials have attracted much attention for their abundant chemical compounds and high theoretical specific capacity.…”