Analysis of electrolyte imbibition through lithium-ion battery electrodes

Davoodabadi, Ali; Li, Jianlin; Liang, Yongfeng; Wood, David L.; Singler, Timothy J.; Jin, Congrui

doi:10.1016/j.jpowsour.2019.03.115

Cited by 74 publications

(51 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Significant strides have also been made in the fundamental understanding of the physical properties of electrodes and electrolyte and wetting relationship. 3,4 Third, the charging and discharging steps are completed at slow rates to ensure the thickness and composition of the SEI and CEI are optimized for minimum capacity fade over the cycle life of the battery. A tap charge is also added after electrolyte injection to increase cell voltage and avoid Cu foil corrosion.…”

Section: Introductionmentioning

confidence: 99%

Formation Challenges of Lithium-Ion Battery Manufacturing

Wood

2019

Joule

Self Cite

123

View full text Add to dashboard Cite

ORNL), researching novel electrode architectures, mass transport phenomena, solid-liquid surface chemistry, advanced processing methods, manufacturing science, and materials characterization for low-temperature fuel cells, PEM electrolyzers, and lithium-ion batteries, and has been employed there since 2009. He is also the former ORNL Fuel Cell Technologies Program Manager (2011-2018), the former Roll-to-Roll Manufacturing Team and Group Leader (2015-2017), and a well-known energy conversion and storage researcher with an industrial and academic career that began in 1995. From 1997 to 2002, he was employed by General Motors Corporation and SGL Carbon Group, excelling at applied R&D related to automotive and stationary PEFC technology. Later work (2003-2009) at Los Alamos National Laboratory (LANL) and Cabot Corporation focused on elucidation of key chemical degradation mechanisms, development of accelerated testing methods, and component development. Dr. Wood received his BS in Chemical Engineering from North Carolina State University in 1994, his MS in Chemical Engineering from the University of Kansas in 1998, and his PhD in Electrochemical Engineering from the University of New Mexico in 2007. He was part of two LANL research teams that won the DOE Hydrogen Program R&D Award for outstanding achievement in 2005 and 2009. He studied PEM fuel cells and lithium-ion batteries with fellowships during his MS and PhD programs. He has received over 200 patents and authored 21 refereed journal articles and transactions papers.

show abstract

Section: Introductionmentioning

confidence: 99%

Formation Challenges of Lithium-Ion Battery Manufacturing

Wood

2019

Joule

Self Cite

123

View full text Add to dashboard Cite

show abstract

“…Batteries & Supercaps wetting of the electrodes by liquid electrolyte has been investigated in a combined experimental and modelling approach. [21] There was good correlation between wetting rates and properties of the electrolyte e. g. the ratio of surface tension to viscosity. Further experiments showed the influence of temperature, electrode porosity, and the solvent used to coat the electrodes.…”

Section: Introductionmentioning

confidence: 94%

Optimisation of Formation and Conditioning Protocols for Lithium‐Ion Electric Vehicle Batteries

Lopez

Lain

Kendrick

2020

Batteries & Supercaps

View full text Add to dashboard Cite

The formation process and subsequent conditioning (cell ageing) protocols for a commercial EV lithium‐ion cell chemistry have been studied to understand their effect on the electrochemical performance and chemical interface. The temperature and duration were varied for both the formation and conditioning steps, and the state of charge was investigated for the conditioning step. The optimum conditioning temperature was shown to be dependent on the previous formation conditions. After formation at room temperature, a longer cycle life was observed when conditioning was performed at 5 °C. After formation at 5 °C, conditioning at 45 °C gave the best cycle life. These results show that the conditioning process is important for cell longevity, and is dependent upon the initial formation. The formation process creates an initial interface layer from reduction of the electrolyte, which rearranges chemically during conditioning. The rearrangement has been followed though impedance studies and XPS analysis. After conditioning at 45 °C, surface analysis of the graphite showed increased quantities of boron and phosphorus in the interface layer, and the fluorine content increased by 20 % during the conditioning process. For low temperature formation, greater levels of lithium and oxygen were observed, which subsequently decreased during conditioning.

show abstract

“…However, several aspects need to be carefully considered when a new electrolyte is employed in a LIB. One of these is the electrolyte/separator wettability, [13][14][15] where the separator provides a physical barrier between the positive and negative electrodes for avoiding an internal short-circuit, and for maintaining an electrolyte reservoir for the transport of ions during battery charging and discharging cycles. For efficient operation and ease of cell assembly, the separator should be easily wetted by the liquid electrolyte because good wetting facilitates Li + -ion mass transfer.…”

Section: Introductionmentioning

confidence: 99%