Unraveling the regulation of a polyhydroxy electrolyte additive for a reversible, dendrite-free zinc anode

Abstract

Rechargeable aqueous Zn-ion batteries (AZIBs) are a promising candidate for electrochemical energy storage applications. However, the practical lifespan of AZIBs is severely compromised due to the dendritic growth, hydrogen evolution,...

Unveiling the correlation between the thickness and uniformity of the hydroxyethyl cellulose film and its protective effect on the zinc electrode

“…The protective effects of cellulose are believed to arise from the presence of ether and hydroxyl groups, which have been proven effective in enhancing the stability of Zn metal electrodes. [45][46][47][48] In this study, hydroxyethyl-modied cellulose (HEC, Fig. 1a) was selected to construct the ASEI for the Zn metal electrode.…”

Surface modulation of zinc anodes by foveolate ZnTe nanoarrays for dendrite-free zinc ion batteries

“…4f exhibits the cumulative plated capacity (CPC) values of Zn@ZnTe symmetric cells compared with other reports, and they achieve an excellent CPC of 2.86 and 3 A h cm −2 at 2 and 10 mA cm −2 , respectively, which is competitive compared to previous literature. 4,[16][17][18][20][21][22]26,34,35 Fig. 5…”

“…However, it should be noted that the growth of dendrites and the hydrogen evolution reaction (HER) cause poor coulombic efficiency (CE) and the risk of short circuits, which seriously limit the practical implementations of ZIBs. [4][5][6][7] To ensure the successful deposition of Zn, it is crucial to stabilize the plating behavior at the electrolyte-anode interface. 8,9 Electrolyte regulation is a common strategy, 10 including developing gel electrolytes, 11 using electrolyte additives, 12,13 designing ionic liquids, [14][15][16] etc.…”

Regulating the Electron Structure of Covalent Organic Frameworks by Strong Electron‐Withdrawing Nitro to Construct Specific Li+ Oriented Channel

“…Thereafter, these dendrites can impale the separator and then trigger safety issues; [6][7][8] 2) high active lithium metal can sustainably react with electrolyte, which finally causes the abundant of consume of Li and attenuation of capacity [9][10][11] ; 3) repeated cracking and reformation of spontaneously formed SEI membrane further deteriorates the surface of Li metal thus lowering the performance of LMB. [12][13][14] So far, a great amount of effort, such as constructing multidimension frameworks, [15][16][17][18] optimizing electrolyte recipes, [19][20][21][22] and designing functional separators [23][24][25][26][27][28] have been adopted to figure out the above dilemmas. These methods can block the growth of dendrite by forming the spontaneous SEI but can't alter the essence of spontaneously formed SEI layers that are prone to break/repair.…”