Zn metal holds grand promise as the anodes of aqueous batteries for grid-scale energy storage. However, the rampant zinc dendrite growth and severe surface side reactions significantly impede the commercial implementation. Herein, a universal Zn-metal oxide Ohmic contact interface model is demonstrated for effectively improving Zn plating/stripping reversibility. The high work function difference between Zn and metal oxides enables the building of an interfacial anti-blocking layer for dendrite-free Zn deposition. Moreover, the metal oxide layer can function as a physical barrier to suppress the pernicious side reactions. Consequently, the proof-of-concept CeO -modified Zn anode delivers ultrastable durability of over 1300 h at 0.5-5 mA cm and improved Coulombic efficiency, the feasibility of which is also evidenced in MoS //Zn full cells. This study enriches the fundamental comprehension of Ohmic contact interfaces on the Zn deposition, which may shed light on the development of other metal battery anodes.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8655195 | PMC |
| http://dx.doi.org/10.1002/advs.202102612 | DOI Listing |
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