Marc M. E. Cormier
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View article: Early-Cycle Internal Impedance Enables ML-Based Battery Cycle Life Predictions Across Manufacturers
Early-Cycle Internal Impedance Enables ML-Based Battery Cycle Life Predictions Across Manufacturers Open
Predicting the end-of-life (EOL) of lithium-ion batteries across different manufacturers presents significant challenges due to variations in electrode materials, manufacturing processes, cell formats, and a lack of generally available dat…
View article: Method—AMIDR: A Complete Pulse Method for Measuring Cathode Solid-State Diffusivity
Method—AMIDR: A Complete Pulse Method for Measuring Cathode Solid-State Diffusivity Open
The Atlung Method for Intercalant Diffusion and Resistance (AMIDR) is a novel, high accuracy method for measuring solid state diffusivity and interface resistance related to the Atlung Method for Intercalant Diffusion (AMID) with several k…
View article: The Effects of Small Amounts of Cobalt in LiNi<sub>1−x</sub>Co<sub>x</sub>O<sub>2</sub> on Lithium-ion Diffusion
The Effects of Small Amounts of Cobalt in LiNi<sub>1−x</sub>Co<sub>x</sub>O<sub>2</sub> on Lithium-ion Diffusion Open
Cobalt substitution for nickel in the positive electrode material LiNi 1-x Co x O 2 at 0 ≤ x ≤ 0.10 is investigated to determine the impact of cobalt on Li diffusivity, measured using the Atlung Method for Intercalant Diffusion (AMID) in c…
View article: How to Measure Solid State Lithium-ion Diffusion using the Atlung Method for Intercalant Diffusion
How to Measure Solid State Lithium-ion Diffusion using the Atlung Method for Intercalant Diffusion Open
A systematic investigation of the factors that affect lithium diffusion coefficient measurements in the Atlung Method for Intercalant Diffusion (AMID) is carried out. Single crystal LiNi 0.6 Mn 0.2 Co 0.2 O 2 is used for method development…
View article: Experimental observation of open structures in elemental magnesium at terapascal pressures
Experimental observation of open structures in elemental magnesium at terapascal pressures Open
View article: Melt Synthesis of Lithium Manganese Iron Phosphate: Part II. Particle Size, Electrochemical Performance, and Solid-State Lithium Diffusion
Melt Synthesis of Lithium Manganese Iron Phosphate: Part II. Particle Size, Electrochemical Performance, and Solid-State Lithium Diffusion Open
Melt synthesis is a fast and simple process to make dense LiMn y Fe 1−y PO 4 (LMFP with 0 ≤ y ≤ 1) from all-dry, low-cost precursors with zero waste. Part one of this study confirmed that highly crystalline and phase pure LMFP materials ca…
View article: Lessons Learned from Long-Term Cycling Experiments with Pouch Cells with Li-Rich and Mn-Rich Positive Electrode Materials
Lessons Learned from Long-Term Cycling Experiments with Pouch Cells with Li-Rich and Mn-Rich Positive Electrode Materials Open
In this work, the performance of commercial (250–300 mAh) Li 1.11 Ni 0.34 Mn 0.53 Al 0.02 O 2 /graphite (LNMA) and Li 1.167 Ni 0.183 Mn 0.558 Co 0.092 O 2 /graphite (LNMC) pouch cells was evaluated using different cycling drive profiles, t…
View article: A Baseline Kinetic Study of Co-Free Layered Li<sub>1+x</sub>(Ni<sub>0.5</sub>Mn<sub>0.5</sub>)<sub>1−x</sub>O<sub>2</sub> Positive Electrode Materials for Lithium-Ion Batteries
A Baseline Kinetic Study of Co-Free Layered Li<sub>1+x</sub>(Ni<sub>0.5</sub>Mn<sub>0.5</sub>)<sub>1−x</sub>O<sub>2</sub> Positive Electrode Materials for Lithium-Ion Batteries Open
Variations of Li chemical diffusion coefficient () with voltage in a series of Co-free Li1+x(Ni0.5Mn0.5)1−xO2, 0 ≤ x ≤ 0.12, materials were systematically investigated using the recently developed "Atlung Method for Intercalant Diffusion".…
View article: Voltage-Dependent Li Kinetics Leads to Charge-Discharge Asymmetry in Co-Free Li-Rich Li<sub>1.12</sub>Ni<sub>0.44</sub>Mn<sub>0.44</sub>O<sub>2</sub> under Conditions without Transition Metal Migration
Voltage-Dependent Li Kinetics Leads to Charge-Discharge Asymmetry in Co-Free Li-Rich Li<sub>1.12</sub>Ni<sub>0.44</sub>Mn<sub>0.44</sub>O<sub>2</sub> under Conditions without Transition Metal Migration Open
Understanding factors that influence Li-ion kinetics in positive electrode materials is important for development of Li-ion batteries capable of operating at high rates and low temperatures. Herein, the impact of rate and operating tempera…
View article: Correlating Cation Mixing with Li Kinetics: Electrochemical and Li Diffusion Measurements on Li-Deficient LiNiO<sub>2</sub> and Li-Excess LiNi<sub>0.5</sub>Mn<sub>0.5</sub>O<sub>2</sub>
Correlating Cation Mixing with Li Kinetics: Electrochemical and Li Diffusion Measurements on Li-Deficient LiNiO<sub>2</sub> and Li-Excess LiNi<sub>0.5</sub>Mn<sub>0.5</sub>O<sub>2</sub> Open
Cation mixing in Li-based layered positive electrode materials has been reported to negatively affect the electrochemical performance and transport properties of intercalated Li. However, no previous reports have systematically correlated …
View article: Factors that Affect Capacity in the Low Voltage Kinetic Hindrance Region of Ni-Rich Positive Electrode Materials and Diffusion Measurements from a Reinvented Approach
Factors that Affect Capacity in the Low Voltage Kinetic Hindrance Region of Ni-Rich Positive Electrode Materials and Diffusion Measurements from a Reinvented Approach Open
With research continuing to push for higher Ni content in positive electrode materials, issues such as the 1st cycle irreversible capacity and kinetic hindrances related to Li diffusion become more significant. This work highlights the imp…
View article: Density-driven ionization potential depression and its effects on material properties
Density-driven ionization potential depression and its effects on material properties Open
Changes in ionization potential at high density drive changes in material transport properties and often in crystal structure and equation of state. Current models used to describe and predict these effects have not been tested in regimes …
View article: Disorder-induced ferrimagnetism in sputtered Mn$_{x}$CoGe thin films
Disorder-induced ferrimagnetism in sputtered Mn$_{x}$CoGe thin films Open
Investigations into the magnetic properties of sputtered Mn$_{x}$CoGe films in the range $0.8 \leq x \leq 2.5$ uncovered ferrimagnetic order, unlike the ferromagnetic order reported in bulk samples. These films formed hexagonal Ni$_{2}$In-…
View article: Is Cobalt Needed in Ni-Rich Positive Electrode Materials for Lithium Ion Batteries?
Is Cobalt Needed in Ni-Rich Positive Electrode Materials for Lithium Ion Batteries? Open
As a derivative of LiNiO2, NCA (LiNi1-x-yCoxAlyO2) is widely used in the electric vehicle industry because of its high energy density. It is thought that Co and Al both play important roles in enhancing NCA material properties. However, th…
View article: Editors' Choice—Hindering Rollover Failure of Li[Ni<sub>0.5</sub>Mn<sub>0.3</sub>Co<sub>0.2</sub>]O<sub>2</sub>/Graphite Pouch Cells during Long-Term Cycling
Editors' Choice—Hindering Rollover Failure of Li[Ni<sub>0.5</sub>Mn<sub>0.3</sub>Co<sub>0.2</sub>]O<sub>2</sub>/Graphite Pouch Cells during Long-Term Cycling Open
Eventual rapid capacity loss or "rollover" failure of lithium-ion cells during long-term cycling (>3000 cycles in many cases) at room temperature was studied with Li[Ni0.5Mn0.3Co0.2]O2/graphite pouch cells. The effects of positive electrod…
View article: A Wide Range of Testing Results on an Excellent Lithium-Ion Cell Chemistry to be used as Benchmarks for New Battery Technologies
A Wide Range of Testing Results on an Excellent Lithium-Ion Cell Chemistry to be used as Benchmarks for New Battery Technologies Open
We present a wide range of testing results on an excellent moderate-energy-density lithium-ion pouch cell chemistry to serve as benchmarks for academics and companies developing advanced lithium-ion and other "beyond lithium-ion" cell chem…
View article: Impact of Dopants (Al, Mg, Mn, Co) on the Reactivity of Li<sub>x</sub>NiO<sub>2</sub> with the Electrolyte of Li-Ion Batteries
Impact of Dopants (Al, Mg, Mn, Co) on the Reactivity of Li<sub>x</sub>NiO<sub>2</sub> with the Electrolyte of Li-Ion Batteries Open
First-principles computation of bulk O binding energies and Bader charges revealed the importance of Li content on thermal decomposition of charged high-nickel positive electrode materials for Li-ion batteries (LixNi1-yMyO2, 0 < x < 1, y =…
View article: Polymerization of sodium-doped liquid nitrogen under pressure
Polymerization of sodium-doped liquid nitrogen under pressure Open
First-principles molecular dynamics (FPMD) simulations are performed on 6 and 12% Na in dense liquid N. A detailed description of structural and electronic properties leading to an understanding of the effect of Na doping on the polymeriza…