Thermal Behavior of Solid Electrolyte Interphase Films Deposited on Graphite Electrodes with Different States-of-Charge

2015 ◽  
Vol 162 (6) ◽  
pp. A892-A896 ◽  
Author(s):  
Hosang Park ◽  
Taeho Yoon ◽  
Youngjin Kim ◽  
Jae Gil Lee ◽  
Jongjung Kim ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Graphite Electrodes

Examining the Solid Electrolyte Interphase on Binder-Free Graphite Electrodes

2009 ◽  
Vol 156 (4) ◽  
pp. A318 ◽  
Author(s):  
Ang Xiao ◽  
Li Yang ◽  
Brett L. Lucht ◽  
Sun-Ho Kang ◽  
Daniel P. Abraham
Keyword(s):  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Graphite Electrodes ◽  
Binder Free

scholarly journals Quantification of Inactive Lithium and Solid Electrolyte Interphase (SEI) Species on Graphite Electrodes After Fast Charging

2020 ◽  
Author(s):  
Eric McShane ◽  
Andrew Colclasure ◽  
David Brown ◽  
Zachary M. Konz ◽  
Kandler Smith ◽  
...  
Keyword(s):  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Particle Surface ◽  
Graphite Electrodes ◽  
Capacity Loss ◽  
Process Understanding ◽  
Fast Charging ◽  
Graphite Anodes ◽  
Carbonate Species ◽  
Stripping Efficiency

<p>Rapid charging of Li-ion batteries is limited by lithium plating on graphite anodes, whereby Li<sup>+</sup> ions are reduced to Li metal on the graphite particle surface instead of inserting between graphitic layers. Plated Li metal not only poses a safety risk due to dendrite formation, but also contributes to capacity loss due to the low reversibility of the Li plating/stripping process. Understanding when Li plating occurs and how much Li has plated is therefore vital to remedying these issues. We demonstrate a titration technique with a minimum detection limit of 20 nmol (5×10<sup>-4</sup> mAh) Li which is used to quantify inactive Li that remains on the graphite electrode after fast charging. Additionally, the titration is extended to quantify the total amount of solid carbonate species and lithium acetylide (Li<sub>2</sub>C<sub>2</sub>) within the solid electrolyte interphase (SEI). Finally, electrochemical modeling is combined with experimental data to determine the Li plating exchange current density (10 A/m<sup>2</sup>) and stripping efficiency (65%) of plated Li metal on graphite. These techniques provide a highly accurate measure of Li plating onset and quantitative insight into graphite SEI evolution during fast charge.</p>

Nondestructive Depth Profiling of the Solid Electrolyte Interphase on LiFePO4 and Graphite Electrodes

2019 ◽  
Vol 25 (36) ◽  
pp. 201-210 ◽  
Author(s):  
Sara Malmgren ◽  
Haåkan Rensmo ◽  
Torbjorn Gustafsson ◽  
Mihaela Gorgoi ◽  
Kristina Edström
Keyword(s):  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Depth Profiling ◽  
Graphite Electrodes

Surface Analysis of Solid Electrolyte Interphase on Binder-free Graphite Electrodes in Advanced Electrolytes

2019 ◽  
Vol 16 (35) ◽  
pp. 141-162 ◽  
Author(s):  
Ang Xiao ◽  
Brett Lucht ◽  
Li Yang ◽  
S Kang ◽  
Daniel Abraham
Keyword(s):  
Solid Electrolyte ◽  
Surface Analysis ◽  
Solid Electrolyte Interphase ◽  
Graphite Electrodes ◽  
Binder Free
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