Work function-activated proton intercalation chemistry assists ultra-stable aqueous zinc ion batteries.

Manganese oxide (MnO) cathodes with a Zn/H co-intercalation mixing mechanism have exhibited great potential for aqueous zinc-ion batteries (AZIBs) owing to their high energy density and optimal electrolyte suitability. However, the strong electrostatic interactions and slow kinetics between the high charge density zinc ions and the fixed lattice in conventional cathodes have hindered the development of AZIBs. Hence, selecting H with a smaller ionic radius and reduced electrostatic repulsion as carriers was a feasible strategy.

An interactive dual energy storage mechanism boosts high-performance aqueous zinc-ion batteries.

Organic materials are promising cathodes for aqueous zinc-ion batteries (AZIBs) due to their cost-effectiveness, environmental friendliness, and tunable structures. However, the energy density of AZIBs remains limited by the inherently low capacity and output voltage of organic cathode materials. To address this challenge, we develop a Mn ion-doped polyaniline (PAM) by harnessing the joint merits of the highly reversible doping process of the conjugated backbone and the unique dissolution-deposition behavior of Mn in ZnSO electrolyte.

Bifunctional Potential Structure Design Breaks Electrolyte Limitations of Zinc Ion Battery.

Aqueous zinc-ion batteries (ZIBs) are safe and economical for grid applications. However, current ZIBs have limitations in terms of inferior capacity and low output voltage, which are hampered by the electrolyte applicability of the Zn hosts. In this study, we propose a novel organic cathode design strategy with a bifunctional potential region.

Construction of Bimetallic Heterojunction Based on Porous Engineering for High Performance Flexible Asymmetric Supercapacitors.

It remains a great challenge to design and manufacture battery-type supercapacitors with satisfactory flexibility, appropriate mechanical property, and high energy density under high power density. Herein, a concept of porous engineering is proposed to simply prepare two-layered bimetallic heterojunction with porous structures. This concept is successfully applied in fabrication of flexible electrode based on CuO-Co(OH) lamella on Cu-plated carbon cloth (named as CPCC@CuO@Co(OH) ).