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Enabling Ether-Based Electrolytes for Long Cycle Life of Lithium-Ion Batteries at High Charge Voltage

Journal Article · · ACS Applied Materials and Interfaces

Lithium-ion batteries (LIBs) with high-nickel (Ni) content LiNixMnyCozO2 (x + y + z = 1) (NMC with Ni ≥ 0.6) cathodes operated at high charge voltages have been considered as one of the most promising candidates for addressing the challenge of increasing energy density demand. Conventional LiPF6–organocarbonate electrolytes exhibit incompatibility with such cell chemistries under certain testing conditions because of the instability of electrode/electrolyte interphases. In response to this challenge, ether-based electrolytes with finely tuned structure and composition of solvation sheaths were developed and evaluated in graphite (Gr)∥NMC811 cell chemistry in 2.5–4.4 V, despite ethers being conventionally considered to be unfavorable electrolyte solvents for LIBs because of their anodic instability above 4.0 V and cointercalation into Gr electrodes. Furthermore, the functional ether-based electrolytes in this work enable both excellent cycle life and high rate capability of Gr∥NMC811 cells. Mechanistic studies reveal that the unique structure and composition of the solvation sheath of the functional ether electrolytes are the main reasons behind their excellent anodic stability and effective protection of the Gr electrode and, consequently, the extraordinary cell performances when operated at high charge cutoff voltages. This work also provides a feasible approach in developing highly stable functional electrolytes for high-energy density LIBs.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
Grant/Contract Number:
AC05-76RL01830; EE0008444
OSTI ID:
1734853
Report Number(s):
PNNL-SA--156239
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 49 Vol. 12; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (27)

High‐Voltage Charging‐Induced Strain, Heterogeneity, and Micro‐Cracks in Secondary Particles of a Nickel‐Rich Layered Cathode Material journal March 2019
A Mixed Lithium‐Ion Conductive Li 2 S/Li 2 Se Protection Layer for Stable Lithium Metal Anode journal April 2020
High-Voltage Lithium-Metal Batteries Enabled by Localized High-Concentration Electrolytes journal March 2018
Advanced Electrolytes for Fast‐Charging High‐Voltage Lithium‐Ion Batteries in Wide‐Temperature Range journal April 2020
Size‐Mediated Recurring Spinel Sub‐nanodomains in Li‐ and Mn‐Rich Layered Cathode Materials journal June 2020
Conductivities of 1,2-dimethoxyethane or 1,2-dimethoxyethane-related solutions of lithium salts journal January 1993
Cyclic carbonate for highly stable cycling of high voltage lithium metal batteries journal February 2019
High-Efficiency Lithium Metal Batteries with Fire-Retardant Electrolytes journal August 2018
Comparison of the structural and electrochemical properties of layered Li[NixCoyMnz]O2 (x = 1/3, 0.5, 0.6, 0.7, 0.8 and 0.85) cathode material for lithium-ion batteries journal July 2013
Best Practice: Performance and Cost Evaluation of Lithium Ion Battery Active Materials with Special Emphasis on Energy Efficiency journal October 2016
Triphenylphosphine Oxide as Highly Effective Electrolyte Additive for Graphite/NMC811 Lithium Ion Cells journal March 2018
Structural Evolution and High-Voltage Structural Stability of Li(Ni x Mn y Co z )O 2 Electrodes journal December 2018
LiPF 6 Stabilizer and Transition-Metal Cation Scavenger: A Bifunctional Bipyridine-Based Ligand for Lithium-Ion Battery Application journal May 2019
Before Li Ion Batteries journal November 2018
Electronic Structure and Comparative Properties of LiNi x Mn y Co z O 2 Cathode Materials journal March 2017
Functionality Selection Principle for High Voltage Lithium-ion Battery Electrolyte Additives journal August 2017
Nonflammable Electrolytes for Lithium Ion Batteries Enabled by Ultraconformal Passivation Interphases journal September 2019
Nonaqueous Liquid Electrolytes for Lithium-Based Rechargeable Batteries journal October 2004
Temperature Dependence of Self-Diffusion Coefficients of Ions and Solvents in Ethylene Carbonate, Propylene Carbonate, and Diethyl Carbonate Single Solutions and Ethylene Carbonate + Diethyl Carbonate Binary Solutions of LiPF 6 Studied by NMR journal June 2012
Solvation Sheath of Li + in Nonaqueous Electrolytes and Its Implication of Graphite/Electrolyte Interface Chemistry journal May 2007
Role of Solution Structure in Solid Electrolyte Interphase Formation on Graphite with LiPF 6 in Propylene Carbonate journal November 2013
Determining oxidative stability of battery electrolytes: validity of common electrochemical stability window (ESW) data and alternative strategies journal January 2017
Investigation of the leaching mechanism of NMC 811 (LiNi 0.8 Mn 0.1 Co 0.1 O 2 ) by hydrochloric acid for recycling lithium ion battery cathodes journal January 2019
Ionic conductivity in Li 3 N single crystals journal June 1977
In Situ X-Ray Absorption Studies of a High-Rate LiNi[sub 0.85]Co[sub 0.15]O[sub 2] Cathode Material journal January 2000
Effects of Fluoroethylene Carbonate (FEC) on Anode and Cathode Interfaces at Elevated Temperatures journal January 2015
The Solid Electrolyte Interphase – The Most Important and the Least Understood Solid Electrolyte in Rechargeable Li Batteries journal December 2009