Affiliation:
1. School of Chemical Engineering Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea
2. Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences & Technology (SAIHST) Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea
3. SKKU Advanced Institute of Nano Technology (SAINT) Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea
4. SKKU Institute of Energy Science and Technology (SIEST) Sungkyunkwan University Suwon 16419 Republic of Korea
5. Biomedical Institute for Convergence at SKKU (BICS) Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea
6. Institute of Quantum Biophysics (IQB) Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea
Abstract
AbstractHydrogel electrolytes consisting of salt ions, water solvents, and 3D polymer networks play the roles of an electrolyte and a separating membrane. These are receiving attention as a substitute for the currently used liquid electrolyte/separator materials in aqueous Zn metal batteries (AZMBs). In this study, a structural composite hydrogel electrolyte is designed by incorporating layered alumina microplatelets within a polymer matrix to achieve high mechanical strength, stiffness, hardness, thermal conductivity, and a large dielectric constant. The hydrogel electrolyte simultaneously achieves mechanical robustness and fast Zn ion transfer, enabling uniform Zn deposition without notable dendrite growth and propagation. Moreover, the rapid heat‐dissipating ability of the electrolyte demonstrates the potential for effective thermal management of AZMB cells. Consequently, Zn||Zn symmetric cells composed of the as‐designed electrolyte exhibit stable Zn plating/stripping behavior at various temperatures. Zn||poly(3,4‐ ethylenedioxythiophene)‐vanadium pentoxide (PVO) full cells have large energy densities of 356.9 W h kg−1 at 25 °C and 216.6 W h kg−1 at −20 °C and long‐term stability over 1,000 cycles. Further, pouch‐type Zn||PVO full cells with large energy densities operate stably while bent, folded, rolled, cut in half, or immersed in boiling and freezing water.
Funder
National Research Foundation
Subject
Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献