Abstract
Recasting zinc electrodes into sponge form factors enables dendrite-free, rechargeable zinc batteries. Prior versions of these electrodes suffer from poor volumetric capacity and insufficient mechanical strength to scale beyond a few square centimeters. Most approaches to fortify zinc electrodes involve adding supportive inactive materials that decrease capacity. In contrast, we boost electrode strength through zinc/zinc-oxide fabrication advances that increase capacity. The resulting electrodes reach a tensile strength of 1 MPa, which now affords large-format scaling of zinc sponges. The tuned architecture achieves a 102% increase in rechargeable volumetric capacity over previously reported electrodes, yielding 928 mA h cmZn−3 in a nickel–zinc battery cycled 115 times with a coulombic efficiency near 100%. These advances in strength, scalability, manufacturability, and rechargeable capacity expand Zn-battery capabilities for a variety of applications including grid storage, personal electronics, and electric vehicles.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
