Surface Characterization of Electrodes from High Power Lithium-Ion Batteries

2002/01/01 by Anna Andersson, A. M. Andersson, Daniel P. Abraham +8 · 12 citations
Engineering · Materials Science · #Advancements in Battery Materials #Advanced Battery Technologies Research #Supercapacitor Materials and Fabrication

paper · doi:10.1149/1.1505636

Abstract

X-ray photoelectron spectroscopy and scanning electron microscopy were used to study electrode samples obtained from 18650-type lithium-ion cells subjected to accelerated calendar-life testing at temperatures ranging from 25 to 70°C and at states-of-charge from 40 to 80%. The cells contained -based positive electrodes (cathodes), graphite-based negative electrodes (anodes), and a 1 M ethylene carbonate:diethyl carbonate (1:1) electrolyte. The results from electrochemically treated samples showed surface film formation on both electrodes. The positive electrode laminate surfaces contained a mixture of organic species that included polycarbonates, and LiF, -type and -type compounds. The same surface compounds were observed regardless of test temperature, test duration, and state-of-charge. On the negative electrode laminates lithium alkyl carbonates and were found in addition to the above-mentioned compounds. Decomposition of lithium alkyl carbonates to occurred on negative electrodes stored at elevated temperature. Initial depth-profiling results suggest that the surface layer thickness is greater on positive electrode samples from cells stored at high temperature than on samples from cells stored at room temperature. This observation is significant because positive electrode impedance, and more specifically, charge-transfer resistance at the electrode/electrolyte interface, has been shown to be the main contributor to impedance rise in these cells. © 2002 The Electrochemical Society. All rights reserved.

Cited by

• Thermal Decomposition of LiPF[sub 6]-Based Electrolytes for Lithium-Ion Batteries
• The origin of the aggressive degradation of Ni-rich transition metal oxide cathodes for high-energy density lithium-ion batteries
• Highly Reversible Lithium Host Materials for High‐Energy‐Density Anode‐Free Lithium Metal Batteries
• Study of Superbase-Based Deep Eutectic Solvents as the Catalyst in the Chemical Fixation of CO₂ into Cyclic Carbonates under Mild Conditions. [europepmc]
• S-containing and Si-containing compounds as highly effective electrolyte additives for SiO x -based anodes/NCM 811 cathodes in lithium ion cells. [europepmc]
• Nanostructured Carbon-Nitrogen-Sulfur-Nickel Networks Derived From Polyaniline as Bifunctional Catalysts for Water Splitting. [europepmc]
• Stabilization of Li-Rich Disordered Rocksalt Oxyfluoride Cathodes by Particle Surface Modification. [europepmc]
• Electrolyte Reactivity at the Charged Ni-Rich Cathode Interface and Degradation in Li-Ion Batteries. [europepmc]
• Impact of surface coating on electrochemical and thermal behaviors of a Li-rich Li 1.2 Ni 0.16 Mn 0.56 Co 0.08 O 2 cathode. [europepmc]
• A fluorinated cation introduces new interphasial chemistries to enable high-voltage lithium metal batteries. [europepmc]
• Study on the electrical-thermal properties of lithium-ion battery materials in the NCM622/graphite system. [europepmc]
• A nitrile solvent structure induced stable solid electrolyte interphase for wide-temperature lithium-ion batteries. [europepmc]

Related

• The Effect of Immersion Cooling on Lithium Plating Degradation in Lithium-Ion Batteries
• XPS Study of the Interface Evolution of Carbonaceous Electrodes for Li-O₂Batteries during the 1st Cycle
• Visualization Analysis and Impedance Analysis for the Aging Behavior Assessment of 18650 Cells
• Capacity Fade due to Side-reactions in Silicon Anodes in Lithium-ion Batteries
• Lithium depth profiling in NMC/Graphite commercial coin cells under high C-rate cycling