Dynamic interphase–mediated assembly for deep cycling metal batteries

Abstract

Dynamic interphases provide a general method for achieving energy-dense metal batteries based on earth-abundant anode chemistries.

Self-repairing interphase reconstructed in each cycle for highly reversible aqueous zinc batteries

“…To our knowledge, this suppression is built on the gradual consumption of additives that occurs during Zn deposition and is thereby not sustainable and falls short in long-term cycling. Lu and Archer et al 28 reported in situ constructed interphases by involving graphitic carbon nitride nanosheets in colloidal electrolytes which achieve ordered assembly of metal electrodeposits. Zn-SEI formed by graphitic carbon nitride nanostructures can effectively promote spatially compact Zn deposits with high levels of reversibility, but the gradual weakened protective effect due to inevitable defects coming on Zn-SEI and the consumption of additives remain unsolved.…”

Highly reversible zinc metal anodes enabled by a three-dimensional silver host for aqueous batteries

“…[11][12][13] Meanwhile, corrosion, hydrogen evolution, and other side reactions caused by the aqueous electrolyte at the interface decrease the reversibility of Zn metal electrodes even further. 14,15 Many effective solutions, such as managing the nucleation and/or crystallographic orientation, [15][16][17][18][19] developing three-dimensional (3D) structures, [20][21][22][23][24][25][26] and optimizing the electrolyte, [27][28][29][30][31][32][33][34] have recently been proposed to improve Zn metal's reversibility in aqueous electrolytes, particularly in neutral or mildly acidic electrolytes. Among these strategies, using 3D collectors has been conrmed to be capable of enhancing the coulombic efficiency and lifespan of Zn anodes with limited capacity.…”

A Functional Organic Zinc-Chelate Formation with Nanoscaled Granular Structure Enabling Long-Term and Dendrite-Free Zn Anodes

“…Zn metal batteries (ZMBs) with high safety and abundant resources have been widely studies in mild aqueous electrolytes because of the appealing merits of Zn anode, comprising high theoretical capacity (820 mAh g –1 , 5854 mAh L –1 ) and low electrochemical potential (−0.76 V vs SHE). − Nevertheless, the direct contact between the water-based electrolyte and zinc together with the lower redox potential of Zn 2+ /Zn than H + /H 2 (0 V vs SHE) would cause baneful interfacial parasitic reactions including chemical corrosion and H 2 evolution, thereby leading to severe byproduct accumulation and electrode passivation. − Such behaviors in turn accelerate nonuniform formation and dendrite growth, eventually bringing about undesirable electrolyte consumption, low coulombic efficiency (CE), and short cycling lifespan. − Thus, feasible and efficient strategies to inhibit side reactions and Zn dendrites are urgent for stable zinc anodes for large scale applications.…”