Electrochemical interface reconstruction to eliminate surface heterogeneity for dendrite-free zinc anodes

Chemical Welding of the Electrode–Electrolyte Interface by Zn‐Metal‐Initiated In Situ Gelation for Ultralong‐Life Zn‐Ion Batteries

“…This is because the oxidation can remove surficial heterogeneity (bumps, dents, or scratches) thus preventing high overpotential and heterogeneous electric current caused by the heterogeneity. [ 15 ] As shown in Figure a, the Zn surface with in situ constructed GPE is quite smooth with no obvious bumps, pits, and/or scratches, which is favorable for the uniform dissolution and deposition of Zn. When the Zn anode is first stripped at a current density of 1 mA cm −2 for 1 h, the Zn stripping sites are relatively uniform with no holes (Figure 3b).…”

200 MPa cold isostatic pressing creates surface-microcracks in a Zn foil for scalable and long-life zinc anodes

“…Aqueous zinc-ion batteries are considered promising candidates for renewable energy storage due to their safety, low toxicity, and high theoretical capacity (820 mA h g −1 ). [1][2][3] In recent years, although researchers have achieved an obvious development of high-performance zinc-ion battery cathodes and electrolytes, the issue of Zn metal itself has been underestimated. 4,5 The inherent defects and uneven growth of zinc dendrites shorten the life of zinc-ion batteries.…”

In-situ construction of fluorinated solid-electrolyte interphase for highly reversible zinc anodes

“…Thus far, various up-and-coming strategies have been proposed to address these challenges confronted by Zn anodes, such as electrode structure designs [14][15][16], electrode surface modifications [17][18][19][20][21][22], and electrolyte engineering [23][24][25][26][27][28]. Since the electrode-electrolyte interface plays a determining role in the electrochemical process, constructing a protective solid-electrolyte interphase (SEI) on the Zn surface is regarded as one of the most promising approaches to improving the performance of Zn anodes [29][30][31].…”