Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Molecular design for electrolyte solvents enabling energy-dense and long-cycling lithium metal batteries

Journal Article · · Nature Energy
 [1];  [2];  [3];  [2];  [4];  [3];  [2];  [5];  [2];  [3];  [1];  [3];  [6];  [3];  [2];  [3];  [7];  [3]
  1. Stanford Univ., CA (United States). Dept. of Chemical Engineering and Dept. of Chemistry
  2. Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
  3. Stanford Univ., CA (United States). Dept. of Chemical Engineering
  4. Stanford Univ., CA (United States). Dept. of Chemical Engineering, Dept. of Chemistry and Dept. of Materials Science and Engineering
  5. Xiamen Univ. (China). School of Electronic Science and Engineering
  6. Stanford Univ., CA (United States). Dept. of Chemistry
  7. Stanford Univ., CA (United States). Dept. of Materials Science and Engineering; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
Electrolyte engineering is critical for developing Li metal batteries. While recent works improved Li metal cyclability, a methodology for rational electrolyte design remains lacking. In this study, we propose a design strategy for electrolytes that enable anode-free Li metal batteries with single-solvent single-salt formations at standard concentrations. Rational incorporation of –CF2– units yields fluorinated 1,4-dimethoxylbutane as the electrolyte solvent. Paired with 1 M lithium bis(fluorosulfonyl)imide, this electrolyte possesses unique Li–F binding and high anion/solvent ratio in the solvation sheath, leading to excellent compatibility with both Li metal anodes (Coulombic efficiency ~ 99.52% and fast activation within five cycles) and high-voltage cathodes (~6 V stability). Fifty-μm-thick Li|NMC batteries retain 90% capacity after 420 cycles with an average Coulombic efficiency of 99.98%. Industrial anode-free pouch cells achieve ~325 Wh kg–1 single-cell energy density and 80% capacity retention after 100 cycles. Our design concept for electrolytes provides a promising path to high-energy, long-cycling Li metal batteries.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1647290
Journal Information:
Nature Energy, Journal Name: Nature Energy Journal Issue: 7 Vol. 5; ISSN 2058-7546
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (56)

An Artificial Solid Electrolyte Interphase with High Li-Ion Conductivity, Mechanical Strength, and Flexibility for Stable Lithium Metal Anodes journal December 2016
High-Voltage Lithium-Metal Batteries Enabled by Localized High-Concentration Electrolytes journal March 2018
Accurate Determination of Coulombic Efficiency for Lithium Metal Anodes and Lithium Metal Batteries journal October 2017
Crosslinked Poly(tetrahydrofuran) as a Loosely Coordinating Polymer Electrolyte journal July 2018
An Anion‐Tuned Solid Electrolyte Interphase with Fast Ion Transfer Kinetics for Stable Lithium Anodes journal February 2020
Anode‐Free Full Cells: A Pathway to High‐Energy Density Lithium‐Metal Batteries journal May 2020
Fluorine and Lithium: Ideal Partners for High‐Performance Rechargeable Battery Electrolytes journal November 2019
MDAnalysis: A toolkit for the analysis of molecular dynamics simulations journal April 2011
Highly Fluorinated Interphases Enable High-Voltage Li-Metal Batteries journal January 2018
Localized High-Concentration Sulfone Electrolytes for High-Efficiency Lithium-Metal Batteries journal August 2018
Advancing Lithium Metal Batteries journal May 2018
High-Efficiency Lithium Metal Batteries with Fire-Retardant Electrolytes journal August 2018
Correlating Structure and Function of Battery Interphases at Atomic Resolution Using Cryoelectron Microscopy journal October 2018
Enabling High-Voltage Lithium-Metal Batteries under Practical Conditions journal July 2019
High-Efficiency Lithium-Metal Anode Enabled by Liquefied Gas Electrolytes journal August 2019
A Dynamic, Electrolyte-Blocking, and Single-Ion-Conductive Network for Stable Lithium-Metal Anodes journal November 2019
Fluorinated Solid-Electrolyte Interphase in High-Voltage Lithium Metal Batteries journal November 2019
GROMACS: High performance molecular simulations through multi-level parallelism from laptops to supercomputers journal September 2015
Resolving Nanoscopic and Mesoscopic Heterogeneity of Fluorinated Species in Battery Solid-Electrolyte Interphases by Cryogenic Electron Microscopy journal March 2020
High-Concentration Ether Electrolytes for Stable High-Voltage Lithium Metal Batteries journal March 2019
Electrolytes and Interphases in Li-Ion Batteries and Beyond journal October 2014
Development of OPLS-AA Force Field Parameters for 68 Unique Ionic Liquids journal March 2009
Highly Stable, Anion Conductive, Comb-Shaped Copolymers for Alkaline Fuel Cells journal June 2013
Development and Testing of the OPLS All-Atom Force Field on Conformational Energetics and Properties of Organic Liquids journal January 1996
Organic Semiconducting Alloys with Tunable Energy Levels journal February 2019
A New Class of Ionically Conducting Fluorinated Ether Electrolytes with High Electrochemical Stability journal April 2020
Chelate Effects in Glyme/Lithium Bis(trifluoromethanesulfonyl)amide Solvate Ionic Liquids, Part 2: Importance of Solvate-Structure Stability for Electrolytes of Lithium Batteries journal July 2014
Promise and reality of post-lithium-ion batteries with high energy densities journal March 2016
A solid future for battery development journal September 2016
Reviving the lithium metal anode for high-energy batteries journal March 2017
Status and challenges in enabling the lithium metal electrode for high-energy and low-cost rechargeable batteries journal December 2017
Non-flammable electrolytes with high salt-to-solvent ratios for Li-ion and Li-metal batteries journal July 2018
Stable cycling of high-voltage lithium metal batteries in ether electrolytes journal July 2018
Advances and issues in developing salt-concentrated battery electrolytes journal March 2019
Pathways for practical high-energy long-cycling lithium metal batteries journal February 2019
High-energy lithium metal pouch cells with limited anode swelling and long stable cycles journal May 2019
Improving cyclability of Li metal batteries at elevated temperatures and its origin revealed by cryo-electron microscopy journal July 2019
Long cycle life and dendrite-free lithium morphology in anode-free lithium pouch cells enabled by a dual-salt liquid electrolyte journal July 2019
Anode-less journal August 2019
Monolithic solid–electrolyte interphases formed in fluorinated orthoformate-based electrolytes minimize Li depletion and pulverization journal September 2019
All-temperature batteries enabled by fluorinated electrolytes with non-polar solvents journal October 2019
Battery revolution to evolution journal November 2019
Non-flammable electrolyte enables Li-metal batteries with aggressive cathode chemistries journal July 2018
Bridging the academic and industrial metrics for next-generation practical batteries journal February 2019
Quantifying inactive lithium in lithium metal batteries journal August 2019
Polymer electrolyte membranes based on poly(m-phenylene)s with sulfonic acid via long alkyl side chains journal January 2013
FSI-inspired solvent and “full fluorosulfonyl” electrolyte for 4 V class lithium-metal batteries journal January 2020
Fluorinated electrolytes for 5 V lithium-ion battery chemistry journal January 2013
Fluorine-donating electrolytes enable highly reversible 5-V-class Li metal batteries journal January 2018
OLEX2 : a complete structure solution, refinement and analysis program journal January 2009
Polymeric [Li(NO 3 )(monoglyme)] n journal August 2002
Crystal structure determination and refinement via SIR2014 journal January 2015
Crystal structure refinement with SHELXL journal January 2015
SHELXT – Integrated space-group and crystal-structure determination journal January 2015
Atomic structure of sensitive battery materials and interfaces revealed by cryo–electron microscopy journal October 2017
Hot Formation for Improved Low Temperature Cycling of Anode-Free Lithium Metal Batteries journal January 2019


Similar Records

Dual-Solvent Li-Ion Solvation Enables High-Performance Li-Metal Batteries
Journal Article · Sat May 08 20:00:00 EDT 2021 · Advanced Materials · OSTI ID:1787601