Modulating the D-band center of mn and mitigating O vacancies with amino groups for enhanced long-cycle alkaline-manganese batteries.

Manganese oxide is a promising cathode material for rechargeable batteries due to its high theoretical specific capacity. However, its practical application is hindered by its poor conductivity and rapid capacity decay caused by Jahn-Teller distortion during charging and discharging. This work introduces NaEDTA during the synthesis of MnO, and the amino group is introduced by adsorption to deposit to form N-doped MnO.

Achieving Dendrite-Free and By-Product-Free Aqueous Zn-Ion Battery Anode via Nicotinic Acid Electrolyte Additive with Molecule-Ion Conversion Mechanism.

The widespread adoption of aqueous Zn ion batteries is hindered by the instability of the Zn anode. Herein, an elegant strategy is proposed to enhance the stability of Zn anode by incorporating nicotinic acid (NA), an additive with a unique molecule-ion conversion mechanism, to optimize the anode/electrolyte interface and the typical ZnSO electrolyte system. Experimental characterization and theoretical calculations demonstrate that the NA additive preferentially replaces HO in the original solvation shell and adsorbs onto the Zn anode surface upon conversion from molecule to ion in the electrolyte environment, thereby suppressing side reactions arising from activated HO decomposition and stochastic growth of Zn dendrites.

Stabilizing Zn anode for high-performance Zn-Ni battery through a complexing agent electrolyte addition.

Zn-Ni batteries have garnered considerable attention due to their high specific energy, consistent discharge voltage, favorable performance at low temperatures, and environmentally benign nature. Nevertheless, anode interface issues such as dendrite growth, hydrogen evolution, and interfacial side reactions lead to poor cycling stability of Zn-Ni batteries, significantly limiting their further commercial applications. In this study, we propose a facile electrolyte engineering strategy to optimize the Zn anode interfacial environment and stabilize the Zn anode by introducing tannic acid (TA) into the KOH electrolyte.

Facile preparation of urchin-like morphology VO-VN nano-heterojunction cathodes for high-performance Aqueous zinc ion battery.

Rechargeable aqueous zinc ion batteries (RAZIBs) are of interest for energy storage in smart grids. However, slow Zn diffusion kinetics, insufficient active sites, and poor intrinsic conductivity are always challenging to exploit the huge potential of the batteries. Here, we prepare VO-VN nano-heterojunction composites with sea urchin-like morphology as the cathode for AZIBs.