Reviving Zn Dendrites to Electroactive Zn by Ion Sieve Interface.

Zn dendrite formation during repeated plating/stripping processes limits the practical use of Zn-metal anodes in reliable and affordable energy storage. Traditional methods, including dendrite suppression and dendrite regulation, fail under demanding performance conditions due to Zn diffusion limitations and concentration gradients. Here, using an in situ pre-zincation approach, a LiZnTiO (LZTO, 0 View Article and Find Full Text PDF

Interfacial Engineering of Zn Metal via a Localized Conjugated Layer for Highly Reversible Aqueous Zinc Ion Battery.

Aqueous zinc-ion batteries are regarded as promising and efficient energy storage systems owing to remarkable safety and satisfactory capacity. Nevertheless, the instability of zinc metal anodes, characterized by issues such as dendrite growth and parasitic side reactions, poses a significant barrier to widespread applications. Herein, we address this challenge by designing a localized conjugated structure comprising a cyclic polyacrylonitrile polymer (CPANZ), induced by a Zn-based Lewis acid (zinc trifluoromethylsulfonate) at a temperature of 120 °C.

Synthesis of Ni B/Ni via Vacuum-Induced for Ultrahigh Stable and Efficient Methanol Oxidation.

Designing efficient catalysts to promote the electrochemical oxidation of anodes is the core of the development of electrochemical synthesis technologies, such as HER and CO RR. Here, a novel vacuum induction strategy is used to synthesize nickel boride/nickel (Ni B/Ni) heterostructure catalyst for electrochemical oxidation of methanol into formic acid. The catalyst has extremely high reactivity (only 146.

Saccharin Anion Acts as a "Traffic Assistant" of Zn to Achieve a Long-Life and Dendritic-Free Zinc Plate Anode.

Due to the great advantages of low cost, high capacity, and excellent safety, the Zn metal is a promising candidate material for rechargeable aqueous battery systems. However, its practical applications have been restricted by the uncontrollable dendrite growth and electrode side reactions (such as corrosion, passivation, and hydrogen evolution reactions) during the plating process. Herein, we reveal that the dendrite growth would expose the electrode to more highly active tips, exacerbating the passivation of the electrode and the decomposition of the electrolyte by in situ optical microscopies.