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Title: An artificial interphase enables reversible magnesium chemistry in carbonate electrolytes

Magnesium-based batteries possess potential advantages over their lithium counterparts. However, reversible Mg chemistry requires a thermodynamically stable electrolyte at low potential, which is usually achieved with corrosive components and at the expense of stability against oxidation. In lithium-ion batteries the conflict between the cathodic and anodic stabilities of the electrolytes is resolved by forming an anode interphase that shields the electrolyte from being reduced. This strategy cannot be applied to Mg batteries because divalent Mg 2+ cannot penetrate such interphases. Here, we engineer an artificial Mg 2+-conductive interphase on the Mg anode surface, which successfully decouples the anodic and cathodic requirements for electrolytes and demonstrate highly reversible Mg chemistry in oxidation-resistant electrolytes. The artificial interphase enables the reversible cycling of a Mg/V 2O 5 full-cell in the water-containing, carbonate-based electrolyte. This approach provides a new avenue not only for Mg but also for other multivalent-cation batteries facing the same problems, taking a step towards their use in energy-storage applications.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [1] ;  [2] ;  [5] ;  [5] ;  [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Univ. of Maryland, College Park, MD (United States)
  3. Colorado School of Mines, Golden, CO (United States)
  4. National Renewable Energy Lab. (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
  5. Army Research Lab., Adelphi, MD (United States)
Publication Date:
Report Number(s):
NREL/JA-5900-66801
Journal ID: ISSN 1755-4330; TRN: US1802409
Grant/Contract Number:
AC36-08GO28308
Type:
Accepted Manuscript
Journal Name:
Nature Chemistry
Additional Journal Information:
Journal Volume: 10; Journal Issue: 5; Journal ID: ISSN 1755-4330
Publisher:
Nature Publishing Group
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), NREL Laboratory Directed Research and Development (LDRD)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; energy storage; Mg-ion battery; surface modification
OSTI Identifier:
1432192

Son, Seoung-Bum, Gao, Tao, Harvey, Steve P., Steirer, K. Xerxes, Stokes, Adam, Norman, Andrew, Wang, Chunsheng, Cresce, Arthur, Xu, Kang, and Ban, Chunmei. An artificial interphase enables reversible magnesium chemistry in carbonate electrolytes. United States: N. p., Web. doi:10.1038/s41557-018-0019-6.
Son, Seoung-Bum, Gao, Tao, Harvey, Steve P., Steirer, K. Xerxes, Stokes, Adam, Norman, Andrew, Wang, Chunsheng, Cresce, Arthur, Xu, Kang, & Ban, Chunmei. An artificial interphase enables reversible magnesium chemistry in carbonate electrolytes. United States. doi:10.1038/s41557-018-0019-6.
Son, Seoung-Bum, Gao, Tao, Harvey, Steve P., Steirer, K. Xerxes, Stokes, Adam, Norman, Andrew, Wang, Chunsheng, Cresce, Arthur, Xu, Kang, and Ban, Chunmei. 2018. "An artificial interphase enables reversible magnesium chemistry in carbonate electrolytes". United States. doi:10.1038/s41557-018-0019-6.
@article{osti_1432192,
title = {An artificial interphase enables reversible magnesium chemistry in carbonate electrolytes},
author = {Son, Seoung-Bum and Gao, Tao and Harvey, Steve P. and Steirer, K. Xerxes and Stokes, Adam and Norman, Andrew and Wang, Chunsheng and Cresce, Arthur and Xu, Kang and Ban, Chunmei},
abstractNote = {Magnesium-based batteries possess potential advantages over their lithium counterparts. However, reversible Mg chemistry requires a thermodynamically stable electrolyte at low potential, which is usually achieved with corrosive components and at the expense of stability against oxidation. In lithium-ion batteries the conflict between the cathodic and anodic stabilities of the electrolytes is resolved by forming an anode interphase that shields the electrolyte from being reduced. This strategy cannot be applied to Mg batteries because divalent Mg2+ cannot penetrate such interphases. Here, we engineer an artificial Mg2+-conductive interphase on the Mg anode surface, which successfully decouples the anodic and cathodic requirements for electrolytes and demonstrate highly reversible Mg chemistry in oxidation-resistant electrolytes. The artificial interphase enables the reversible cycling of a Mg/V2O5 full-cell in the water-containing, carbonate-based electrolyte. This approach provides a new avenue not only for Mg but also for other multivalent-cation batteries facing the same problems, taking a step towards their use in energy-storage applications.},
doi = {10.1038/s41557-018-0019-6},
journal = {Nature Chemistry},
number = 5,
volume = 10,
place = {United States},
year = {2018},
month = {4}
}

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