Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 12, Issue 6, Pages 1938-1949Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ee00596j
Keywords
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Funding
- National Natural Science Foundation of China [21601195, 51625204]
- Key research and development plan of Shandong Province P. R. China [2018GGX104016]
- National Key R&D Program of China [2018YFB0104300]
- Key Program of the Chinese Academy of Sciences [KFZD-SW-414]
- Qingdao Science and Technology Program [17-1-1-30-jch]
- China National Funds for Distinguished Young Scientists of the National Natural Science Foundation of China
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2019214]
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Aqueous Zn anodes have been revisited for their intrinsic safety, low cost, and high volumetric capacity; however, deep-seated issues of dendrite growth and intricate side-reactions hindered their rejuvenation. Herein, a brightener-inspired'' polyamide coating layer which elevates the nucleation barrier and restricts Zn2+ 2D diffusion is constructed to effectively regulate the aqueous Zn deposition behavior. Importantly, serving as a buffer layer that isolates active Zn from bulk electrolytes, this interphase also suppresses free water/O2-induced corrosion and passivation. With this synergy effect, the polymermodified Zn anode produces reversible, dendrite-free plating/stripping with a 60-fold enhancement in running lifetime (over 8000 hours) compared to the bare Zn, and even at an ultrahigh areal capacity of 10 mA h cm(-2) (10 mA cm(-2) for 1 h, 85% depth of discharge). This efficient rechargeability for Zn anodes enables a substantially stable full-cell paired with a MnO2 cathode. The strategy presented here is straightforward and scalable, representing a stark, but promising approach to solve the anode issues in advanced Zn batteries.
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