Achieving Stable Molybdenum Oxide Cathodes for Aqueous Zinc-Ion Batteries in Water-in-Salt Electrolyte

Wang, Lei; Yan, Shan; Quilty, Calvin D.; Kuang, Jason; Dunkin, Mikaela R.; Ehrlich, Steven N.; Ma, Lu; Takeuchi, Kenneth J.; Takeuchi, Esther S.; Marschilok, Amy C.

doi:10.1002/admi.202170052

Title: Achieving Stable Molybdenum Oxide Cathodes for Aqueous Zinc-Ion Batteries in Water-in-Salt Electrolyte

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Abstract

A layered MoO₃ material with large interlayer spacing represents a promising cathode for aqueous rechargeable Zn-ion batteries (ARZIBs), but the implementation of this material is limited due to the intrinsically low conductivity and poor structural stability. A 30 m ZnCl₂ water-in-salt electrolyte (WISE) was introduced to a MoO₃ nanobelt cathode for the first time, significantly increasing the stability of MoO₃ cathodes compared to those in 3 M ZnSO₄ and 3 M ZnCl2 electrolyte. The Zn/MoO₃ cell in WISE unambiguously demonstrated significantly improved rate performance delivering 349, 253, and 222 mAh/g at 100, 500, and 1000 mA/g, denoting a 2×, and 12× capacity increase of those achieved in 3 M electrolytes at 500 and 1000 mA/g, respectively. A capacity retention rate of 73% was achieved after (dis)charging at 100 mA/g for 100 cycles, and no obvious capacity fading was observed at higher current densities of 500 mA/g and 2A/g. A compilation of structural and morphological characterization was systematically performed to provide insight into the mechanisms of the improved performance in ZnCl₂ WISE for the MoO3 cathode materials. Specifically, our data collectively suggested that the drastic fading in 3M electrolytes can be attributed to the parasitic surface deposits on Zn originated frommore »« less

Authors:

Wang, Lei ^[1]; Yan, Shan ^[1]; Quilty, Calvin D. ^[2]; Kuang, Jason ^[3]; Dunkin, Mikaela R. ^[4]; Ehrlich, Steven N. ^[5]; Ma, Lu ^[5]; Takeuchi, Kenneth J. ^[6]; Takeuchi, Esther S. ^[7]; Marschilok, Amy C. ^[7]

Brookhaven National Lab. (BNL), Upton, NY (United States). Interdisciplinary Science Dept.; Stony Brook Univ., NY (United States). Institute for Electrochemically Stored Energy
Stony Brook Univ., NY (United States). Dept. of Chemistry; Stony Brook Univ., NY (United States). Institute for Electrochemically Stored Energy
Stony Brook Univ., NY (United States). Institute for Electrochemically Stored Energy; Stony Brook Univ., NY (United States). Dept. of Materials Science and Chemical Engineering
Stony Brook Univ., NY (United States). Institute for Electrochemically Stored Energy, Stony Brook Univ., NY (United States). Dept. of Materials Science and Chemical Engineering
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Stony Brook Univ., NY (United States). Institute for Electrochemically Stored Energy; Stony Brook Univ., NY (United States). Dept. of Materials Science and Chemical Engineering; Stony Brook Univ., NY (United States). Dept. of Chemistry
Brookhaven National Lab. (BNL), Upton, NY (United States). Interdisciplinary Science Dept.; Stony Brook Univ., NY (United States). Institute for Electrochemically Stored Energy; Stony Brook Univ., NY (United States). Dept. of Materials Science and Chemical Engineering; Stony Brook Univ., NY (United States). Dept. of Chemistry

Publication Date:: Fri May 07 00:00:00 EDT 2021

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1778914

Report Number(s):: BNL-221151-2021-JAAM
Journal ID: ISSN 2196-7350

Grant/Contract Number:: SC0012704; SC0012673

Resource Type:: Accepted Manuscript

Journal Name:: Advanced Materials Interfaces

Additional Journal Information:: Journal Volume: 8; Journal Issue: 9; Journal ID: ISSN 2196-7350

Publisher:: Wiley-VCH

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; Molybdenum oxide; aqueous zinc-ion batteries; water-in-salt electrolyte; dissolution; stable cycling

Citation Formats


                    Wang, Lei, Yan, Shan, Quilty, Calvin D., Kuang, Jason, Dunkin, Mikaela R., Ehrlich, Steven N., Ma, Lu, Takeuchi, Kenneth J., Takeuchi, Esther S., and Marschilok, Amy C. Achieving Stable Molybdenum Oxide Cathodes for Aqueous Zinc-Ion Batteries in Water-in-Salt Electrolyte.  United States: N. p., 2021. 
Web.  doi:10.1002/admi.202170052.

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                    Wang, Lei, Yan, Shan, Quilty, Calvin D., Kuang, Jason, Dunkin, Mikaela R., Ehrlich, Steven N., Ma, Lu, Takeuchi, Kenneth J., Takeuchi, Esther S., & Marschilok, Amy C. Achieving Stable Molybdenum Oxide Cathodes for Aqueous Zinc-Ion Batteries in Water-in-Salt Electrolyte.  United States.  https://doi.org/10.1002/admi.202170052

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                    Wang, Lei, Yan, Shan, Quilty, Calvin D., Kuang, Jason, Dunkin, Mikaela R., Ehrlich, Steven N., Ma, Lu, Takeuchi, Kenneth J., Takeuchi, Esther S., and Marschilok, Amy C. Fri .  
"Achieving Stable Molybdenum Oxide Cathodes for Aqueous Zinc-Ion Batteries in Water-in-Salt Electrolyte".  United States.  https://doi.org/10.1002/admi.202170052.  https://www.osti.gov/servlets/purl/1778914.

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@article{osti_1778914,

  title        = {Achieving Stable Molybdenum Oxide Cathodes for Aqueous Zinc-Ion Batteries in Water-in-Salt Electrolyte},

  author       = {Wang, Lei and Yan, Shan and Quilty, Calvin D. and Kuang, Jason and Dunkin, Mikaela R. and Ehrlich, Steven N. and Ma, Lu and Takeuchi, Kenneth J. and Takeuchi, Esther S. and Marschilok, Amy C.},

  abstractNote = {A layered MoO3 material with large interlayer spacing represents a promising cathode for aqueous rechargeable Zn-ion batteries (ARZIBs), but the implementation of this material is limited due to the intrinsically low conductivity and poor structural stability. A 30 m ZnCl2 water-in-salt electrolyte (WISE) was introduced to a MoO3 nanobelt cathode for the first time, significantly increasing the stability of MoO3 cathodes compared to those in 3 M ZnSO4 and 3 M ZnCl2 electrolyte. The Zn/MoO3 cell in WISE unambiguously demonstrated significantly improved rate performance delivering 349, 253, and 222 mAh/g at 100, 500, and 1000 mA/g, denoting a 2×, and 12× capacity increase of those achieved in 3 M electrolytes at 500 and 1000 mA/g, respectively. A capacity retention rate of 73% was achieved after (dis)charging at 100 mA/g for 100 cycles, and no obvious capacity fading was observed at higher current densities of 500 mA/g and 2A/g. A compilation of structural and morphological characterization was systematically performed to provide insight into the mechanisms of the improved performance in ZnCl2 WISE for the MoO3 cathode materials. Specifically, our data collectively suggested that the drastic fading in 3M electrolytes can be attributed to the parasitic surface deposits on Zn originated from Mo dissolution and H2 formation due to Zn corrosion and hydrogen evolution reaction (HER), which were significantly suppressed in the ZnCl2 WISE. The direct visualization of these side reactions was achieved for the first time in the Zn-MoO3 system, using an in situ optoelectrochemical measurement.},

  doi          = {10.1002/admi.202170052},

  journal      = {Advanced Materials Interfaces},

  number       = 9,

  volume       = 8,

  place        = {United States},

  year         = {Fri May 07 00:00:00 EDT 2021},

  month        = {Fri May 07 00:00:00 EDT 2021}

}

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