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Title: Long term stability of Li-S batteries using high concentration lithium nitrate electrolytes

Journal Article · · Nano Energy
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Lithium-sulfur (Li-S) battery is a very promising candidate for the next generation of energy storage systems required for electrical vehicles and grid energy storage applications due to its very high theoretical specific energy (2500 W h kg-1). However, the low coulombic efficiency (CE) during repeated Li plating/stripping of these processes have limited practical application of rechargeable Li-S batteries. In this work, a new electrolyte system based on high concentration of LiNO3 in diglyme solvent is developed which enables high CE of Li metal plating/stripping and high stability of Li anode in the sulfur containing electrolyte. Tailoring of electrolyte properties for the Li negative electrode has proven to be a successful strategy for improving the capacity retention and cycle life of Li-S batteries. This electrolyte provides a CE for Li plating/stripping of greater than 99% for over 200 cycles. In contrast, Li metal cycles for only less than 35 cycles at high CE in the standard 1 M LiTFSI + 2wt% LiNO3 in DOL:DME electrolyte under the same conditions. The stable Li metal anode enabled by the new electrolyte may accelerate the applications of high energy density Li-S batteries in both electrical vehicles and large-scale grid energy storage markets.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States). Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1398163
Report Number(s):
PNNL-SA-124786; 48681; KC0208010
Journal Information:
Nano Energy, Vol. 40, Issue C; ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

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Cited By (21)

Tuning the electrolyte network structure to invoke quasi-solid state sulfur conversion and suppress lithium dendrite formation in Li–S batteries journal August 2018
Insight into the effect of additives widely used in lithium–sulfur batteries journal January 2019
Stabilizing polymer electrolytes in high-voltage lithium batteries journal July 2019
A Comprehensive Understanding of Lithium–Sulfur Battery Technology journal June 2019
A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions journal January 2020
Self‐Formed Protection Layer on a 3D Lithium Metal Anode for Ultrastable Lithium–Sulfur Batteries journal April 2019
Constructing Universal Ionic Sieves via Alignment of Two‐Dimensional Covalent Organic Frameworks (COFs) journal October 2018
Rational design of spontaneous reactions for protecting porous lithium electrodes in lithium–sulfur batteries journal July 2019
Constructing Universal Ionic Sieves via Alignment of Two‐Dimensional Covalent Organic Frameworks (COFs) journal December 2018
A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions journal February 2020
Electrolyte Concentration Effect on Sulfur Utilization of Li-S Batteries journal January 2019
Development and Challenges of Functional Electrolytes for High-Performance Lithium-Sulfur Batteries journal July 2018
How Far Away Are Lithium-Sulfur Batteries From Commercialization? journal November 2019
Formulierung von Elektrolyten mit gemischten Lithiumsalzen für Lithium‐Batterien journal December 2019
Formulation of Blended‐Lithium‐Salt Electrolytes for Lithium Batteries journal December 2019
A Ceramic-PVDF Composite Membrane with Modified Interfaces as an Ion-Conducting Electrolyte for Solid-State Lithium-Ion Batteries Operating at Room Temperature journal July 2018
A Concentrated Ternary‐Salts Electrolyte for High Reversible Li Metal Battery with Slight Excess Li journal December 2018
Tailored Reaction Route by Micropore Confinement for Li-S Batteries Operating under Lean Electrolyte Conditions journal May 2018
Carbon-Metal Oxide Nanocomposites as Lithium-Sulfur Battery Cathodes book February 2021
Innenrücktitelbild: A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions (Angew. Chem. 8/2020) journal January 2020
Inside Back Cover: A Sustainable Solid Electrolyte Interphase for High‐Energy‐Density Lithium Metal Batteries Under Practical Conditions (Angew. Chem. Int. Ed. 8/2020) journal February 2020

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