Recent progress in tackling Zn anode challenges for Zn ion batteries

Abstract

The growing demand for safer electrical energy storage has stimulated the pursuit of alternative advanced batteries. Aqueous Zn ion batteries (ZIBs) are receiving increasing attention due to their high safety,...

Recent advances and perspectives for Zn-based batteries: Zn anode and electrolyte

“…Zn has a distorted hexagonal close-packed structure with an in-plane bond length of 2.63 Å and a spacing of 5.21 Å (along the z-axis), where each atom is coordinated by its nearest neighbor. The (001) and ( 121) planes of Zn have the lowest and the highest surface energy of 0.02 eV•Å −2 and 0.06 eV•Å −2 , respectively [61,62]. Consequently, Zn has a strong growth tendency through the ab plane to produce hexagonal sheets.…”

Recent progress in structural modification of polymer gel electrolytes for use in solid-state zinc-ion batteries

“…20–22 In detail, hydrogen evolution corrosion and oxygen absorption corrosion are caused by free water existing on the zinc anode surface of zinc-ion batteries. 23–25 The extra OH– produced by the hydrogen evolution reaction on the electrode surface will directly react with zinc, promoting corrosion of the metal, producing hydrogen and passivating the electrode due to the formation of ZnO. 26,27 The hydrogen evolution reaction on the zinc anode surface is as follows:Zn + 2H + → Zn 2+ + H 2 Zn 2+ + 2OH − → Zn(OH) 2 Zn(OH) 2 → ZnO + H 2 O…”

Strategies for addressing the challenges of aqueous zinc batteries enabled by functional separators

“…Although there are many insightful and impactful reviews concerning the development of advanced AZBs, including the stabilization of zinc anodes 10,21,30 and development of the electrolytes, [31][32][33] to the best of our knowledge, there is a lack of a comprehensive summary and discussion focusing on the effects of functional separators in AZBs to date, which may present new insights for the construction of high-performance AZBs. Thus, herein, the recent advances of functional separators in AZBs are comprehensively summarized.…”