Anu Adamson
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View article: Improving and Understanding Lifetime of LFP/Graphite Pouch Cells with Higher Concentrations of Vinylene Carbonate in the Electrolyte
Improving and Understanding Lifetime of LFP/Graphite Pouch Cells with Higher Concentrations of Vinylene Carbonate in the Electrolyte Open
With the growing adoption of LiFePO 4 (LFP)/Graphite (Gr) cell chemistry in electric vehicles and grid energy storage, understanding and enhancing its performance under high-temperature conditions has become increasingly critical. In this …
View article: Dimethyl Sulfite as a Possible Alternative Electrolyte Solvent for Na-Ion Batteries
Dimethyl Sulfite as a Possible Alternative Electrolyte Solvent for Na-Ion Batteries Open
Dimethyl sulfite (DMS) is evaluated as an electrolyte single solvent and co-solvent for Na-ion cells. The major motivation for this work was to see if the safety of Na-ion cells with oxide positive electrodes could be improved by switching…
View article: Limitations of Li-Ion Pouch Cells for Accelerated Testing and Long-Lifetime Cells
Limitations of Li-Ion Pouch Cells for Accelerated Testing and Long-Lifetime Cells Open
Li-ion pouch cells that have experienced long-term accelerated testing at extreme temperatures have exhibited electrolyte permeation through the seals of the pouch bag, leading to eventual cell failure due to electrolyte unwetting and impe…
View article: A Guide to Choosing Polymers for Use in Lithium-Ion Cells
A Guide to Choosing Polymers for Use in Lithium-Ion Cells Open
Every commercial Li-ion cell contains several inactive components, most of which are composed of polymers. Many of these polymer-based inactive components, such as cell gaskets, jellyroll tapes, or even current collectors, utilize ester-ba…
View article: Impact of Jellyroll Tapes on Performance of Layered Oxide/Hard Carbon Sodium-Ion Pouch Cells
Impact of Jellyroll Tapes on Performance of Layered Oxide/Hard Carbon Sodium-Ion Pouch Cells Open
This study investigates the influence of jellyroll tape materials on the cycle life and self-discharge of layered oxide/hard carbon sodium-ion pouch cells. Jellyroll tapes made of polyethylene terephthalate (PET) or polypropylene (PP) poly…
View article: Alkyl Dicarbonates, Common Electrolyte Degradation Products, Can Enable Long-Lived Li-Ion Cells at High Temperatures
Alkyl Dicarbonates, Common Electrolyte Degradation Products, Can Enable Long-Lived Li-Ion Cells at High Temperatures Open
A common degradation product dimethyl-2,5-dioxahexane carboxylate (DMOHC) produced in Li-ion cell electrolytes after ageing is used here as an electrolyte solvent, allowing Li-ion cells to operate at high temperatures (70 °C and 85 °C) wit…
View article: Understanding the Self-Discharge Redox Shuttle Mechanism of Dimethyl Terephthalate in Lithium-Ion Batteries
Understanding the Self-Discharge Redox Shuttle Mechanism of Dimethyl Terephthalate in Lithium-Ion Batteries Open
Dimethyl terephthalate (DMT) is a redox shuttle molecule that leads to unwanted self-discharge of lithium-ion cells. It can be created in situ as a breakdown product of polyethylene terephthalate (PET), which is a surprisingly common polym…
View article: Improving Lithium-ion Cells by Replacing Polyethylene Terephthalate Jellyroll Tape
Improving Lithium-ion Cells by Replacing Polyethylene Terephthalate Jellyroll Tape Open
Polyethylene terephthalate (PET) tape is widely used by well-known lithium-ion battery manufacturers to prevent electrode stacks from unwinding during assembly. PET tape is selected since it has suitable mechanical and electrical propertie…
View article: Identification of Redox Shuttle Generated in LFP/Graphite and NMC811/Graphite Cells
Identification of Redox Shuttle Generated in LFP/Graphite and NMC811/Graphite Cells Open
Unwanted self-discharge of LFP/AG and NMC811/AG cells can be caused by in situ generation of a redox shuttle molecule after formation at elevated temperature with common alkyl carbonate electrolyte. This study investigates the redox shuttl…