@article{8eb74ebb3e734626bf713acf7af575d8,
title = "Highly Reversible Aqueous Zinc Batteries enabled by Zincophilic–Zincophobic Interfacial Layers and Interrupted Hydrogen-Bond Electrolytes",
abstract = "Aqueous Zn batteries promise high energy density but suffer from Zn dendritic growth and poor low-temperature performance. Here, we overcome both challenges by using an eutectic 7.6 m ZnCl2 aqueous electrolyte with 0.05 m SnCl2 additive, which in situ forms a zincophilic/zincophobic Sn/Zn5(OH)8Cl2⋅H2O bilayer interphase and enables low temperature operation. Zincophilic Sn decreases Zn plating/stripping overpotential and promotes uniform Zn plating, while zincophobic Zn5(OH)8Cl2⋅H2O top-layer suppresses Zn dendrite growth. The eutectic electrolyte has a high ionic conductivity of ≈0.8 mS cm−1 even at −70 °C due to the distortion of hydrogen bond network by solvated Zn2+ and Cl−. The eutectic electrolyte enables Zn∥Ti half-cell a high Coulombic efficiency (CE) of >99.7 % for 200 cycles and Zn∥Zn cell steady charge/discharge for 500 h with a low overpotential of 8 mV at 3 mA cm−2. Practically, Zn∥VOPO4 batteries maintain >95 % capacity with a CE of >99.9 % for 200 cycles at −50 °C, and retain ≈30 % capacity at −70 °C of that at 20 °C.",
author = "Longsheng Cao and Dan Li and Soto, {Fernando A.} and Victor Ponce and Bao Zhang and Lu Ma and Tao Deng and Seminario, {Jorge M.} and Enyuan Hu and Yang, {Xiao Qing} and Balbuena, {Perla B.} and Chunsheng Wang",
note = "Funding Information: C. Wang at the University of Maryland gratefully acknowledges funding support from the Advanced Research Projects Agency‐Energy under Contract No. DEAR0000962. E. Hu, and X.‐Q. Yang at Brookhaven National Laboratory (BNL) were supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Vehicle Technology Office of the U.S. Department of Energy through the Advanced Battery Materials Research (BMR) Program under contract DE‐SC0012704. This research used beamlines 7‐BM of the National Synchrotron Light Source II, a U.S. DOE Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE‐SC0012704. Supercomputer resources from the Texas A&M University High Performance Research Computing and Texas Advanced Computing Center (TACC) are gratefully acknowledged. Funding Information: C. Wang at the University of Maryland gratefully acknowledges funding support from the Advanced Research Projects Agency-Energy under Contract No. DEAR0000962. E. Hu, and X.-Q. Yang at Brookhaven National Laboratory (BNL) were supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Vehicle Technology Office of the U.S. Department of Energy through the Advanced Battery Materials Research (BMR) Program under contract DE-SC0012704. This research used beamlines 7-BM of the National Synchrotron Light Source II, a U.S. DOE Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704. Supercomputer resources from the Texas A&M University High Performance Research Computing and Texas Advanced Computing Center (TACC) are gratefully acknowledged. Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",
year = "2021",
month = aug,
day = "16",
doi = "10.1002/anie.202107378",
language = "English (US)",
volume = "60",
pages = "18845--18851",
journal = "Angewandte Chemie - International Edition",
issn = "1433-7851",
publisher = "John Wiley and Sons Ltd",
number = "34",
}