Alison R. Dunlop
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View article: Building high-energy silicon-containing batteries using off-the-shelf materials
Building high-energy silicon-containing batteries using off-the-shelf materials Open
The technology of silicon anodes appears to be reaching maturity, with high-energy Si cells already in pilot-scale production. However, the performance of these systems can be difficult to replicate in academic settings, making it challeng…
View article: Neutron-Friendly Li-Ion Battery Coin Cell for In Situ 3D Visualization of Li Plating
Neutron-Friendly Li-Ion Battery Coin Cell for In Situ 3D Visualization of Li Plating Open
Advanced battery characterization using in situ /operando neutron imaging is critical for uncovering degradation modes such as lithium (Li) plating in Li-ion batteries (LIBs). However, conventional LIBs hinder operando neutron radiography …
View article: Neutron-friendly Li-ion battery coin cell for In Situ 3D visualization of Li plating
Neutron-friendly Li-ion battery coin cell for In Situ 3D visualization of Li plating Open
Advanced battery characterization using in situ/operando neutron imaging is essential for uncovering degradation modes in lithium-ion batteries (LIBs). However, current LIB designs hinder operando neutron radiography (NR) and in situ micro…
View article: Fast-charging lithium-ion batteries: Synergy of carbon nanotubes and laser ablation
Fast-charging lithium-ion batteries: Synergy of carbon nanotubes and laser ablation Open
View article: Inactive Overhang in Silicon Anodes
Inactive Overhang in Silicon Anodes Open
Li-ion batteries contain excess anode area to improve manufacturability and prevent Li plating. These overhang areas in graphite electrodes are active but experience decreased Li + flux during cycling. Over time, the overhang and the anode…
View article: Inactive Overhang in Silicon Anodes
Inactive Overhang in Silicon Anodes Open
Li-ion batteries contain excess anode area to improve manufacturability and prevent Li plating. These overhang areas in graphite electrodes are active but experience decreased Li+ flux during cycling. Over time, the overhang and the anode …
View article: Visualizing 3D Morphologies and Spatial Heterogeneities of Li after Fast-Charging via In-situ Neutron Tomography
Visualizing 3D Morphologies and Spatial Heterogeneities of Li after Fast-Charging via In-situ Neutron Tomography Open
Mechanistic understanding of Li plating is imperative to developing fast-charging batteries for sustainable electric vehicles. Here, we report in-situ 3D characterization of the morphological behavior and spatial heterogeneities of Li plat…
View article: Visualizing 3D Morphologies and Spatial Heterogeneities of Li after Fast-Charging via In-situ Neutron Tomography
Visualizing 3D Morphologies and Spatial Heterogeneities of Li after Fast-Charging via In-situ Neutron Tomography Open
View article: Fast-Charging Lithium-Ion Batteries: Synergy of Carbon Nanotubes and Laser Ablation
Fast-Charging Lithium-Ion Batteries: Synergy of Carbon Nanotubes and Laser Ablation Open
View article: Cell-Format-Dependent Mechanical Damage in Silicon Anodes
Cell-Format-Dependent Mechanical Damage in Silicon Anodes Open
Strong binders can be counterproductive for silicon anodes. Here, we show that stresses from cycling Si-based electrodes can cause permanent stretching and wrinkling of the current collector. Furthermore, this deformation damages the elect…
View article: Simultaneous neutron and X-ray tomography for visualization of graphite electrode degradation in fast-charged lithium-ion batteries
Simultaneous neutron and X-ray tomography for visualization of graphite electrode degradation in fast-charged lithium-ion batteries Open
View article: Pouch cells with 15% silicon calendar-aged for 4 years
Pouch cells with 15% silicon calendar-aged for 4 years Open
View article: Erratum: Conformal Pressure and Fast-Charging Li-Ion Batteries [J. Electrochem. Soc., 169, 040540 (2022)]
Erratum: Conformal Pressure and Fast-Charging Li-Ion Batteries [J. Electrochem. Soc., 169, 040540 (2022)] Open
Correction for “Conformal Pressure and Fast-Charging Li-Ion Batteries” by Chuntian Cao et al., J. Electrochem. Soc. 169.4 (2022): 040540. DOI: 10.1149/1945-7111/ac653f.
View article: Simultaneous neutron and X-ray tomography for visualization of graphite electrode degradation in fast-charged lithium-ion batteries
Simultaneous neutron and X-ray tomography for visualization of graphite electrode degradation in fast-charged lithium-ion batteries Open
View article: Carbon-Binder Optimization for Lithium-Ion Battery Extreme Fast Charge
Carbon-Binder Optimization for Lithium-Ion Battery Extreme Fast Charge Open
Battery performance is strongly correlated with electrode microstructure and weight loading of the electrode components. Among them are the carbon-black and binder additives that enhance effective conductivity and provide mechanical integr…
View article: Direct Recycling of Lithium-Ion Battery Cathodes: A Multi-Stage Annealing Process to Recover the Pristine Structure and Performance
Direct Recycling of Lithium-Ion Battery Cathodes: A Multi-Stage Annealing Process to Recover the Pristine Structure and Performance Open
Direct recycling is an alternative low-cost process that retains the structure of the lithium-ion battery cathode rather than going through materials dissolution and repurification. While the process shows promise, various steps need to be…
View article: Pouch cells with 15% silicon calendar-aged for 4 years
Pouch cells with 15% silicon calendar-aged for 4 years Open
Small amounts of high-capacity silicon-based materials are already used in the anode of commercial Li-ion batteries, helping increase their energy density. Despite their remarkable storage capability, silicon continuously reacts with the e…
View article: The influence of temperature on area-specific impedance and capacity of Li-ion cells with nickel-containing positive electrodes
The influence of temperature on area-specific impedance and capacity of Li-ion cells with nickel-containing positive electrodes Open
View article: Carbon-Binder Weight Loading Optimization for Improved Lithium-Ion Battery Rate Capability
Carbon-Binder Weight Loading Optimization for Improved Lithium-Ion Battery Rate Capability Open
Battery performance is strongly correlated with electrode microstructure and weight loading of the electrode components. Among them are the carbon-black and binder additives that enhance effective conductivity and provide mechanical integr…
View article: Simultaneous neutron and X-ray tomography for ex-situ 3D visualization of graphite anode degradation in extremely fast-charged lithium-ion batteries.
Simultaneous neutron and X-ray tomography for ex-situ 3D visualization of graphite anode degradation in extremely fast-charged lithium-ion batteries. Open
Extreme fast charging (XFC) of commercial lithium-ion batteries (LIBs) in ≤10-15 minutes will significantly advance the deployment of electric vehicles globally. However, XFC leads to considerable capacity fade, mainly due to graphite anod…
View article: Critical Evaluation of Potentiostatic Holds as Accelerated Predictors of Capacity Fade during Calendar Aging
Critical Evaluation of Potentiostatic Holds as Accelerated Predictors of Capacity Fade during Calendar Aging Open
Li-ion batteries will lose both capacity and power over time due to calendar aging caused by slow parasitic processes that consume Li + ions. Studying and mitigating these processes is traditionally an equally slow venture, which is especi…
View article: Conformal Pressure and Fast-Charging Li-Ion Batteries
Conformal Pressure and Fast-Charging Li-Ion Batteries Open
Batteries capable of extreme fast-charging (XFC) are a necessity for the deployment of electric vehicles. Material properties of electrodes and electrolytes along with cell parameters such as stack pressure and temperature have coupled, sy…
View article: Simultaneous Neutron and X-Ray Tomography for ex-situ 3D Visualization of Graphite Anode Degradation in Extremely Fast-Charged Lithium-Ion Batteries
Simultaneous Neutron and X-Ray Tomography for ex-situ 3D Visualization of Graphite Anode Degradation in Extremely Fast-Charged Lithium-Ion Batteries Open
View article: ReCell Center for Advanced Battery Recycling: Crosscutting Efforts
ReCell Center for Advanced Battery Recycling: Crosscutting Efforts Open
This poster summarizes work performed under crosscutting efforts during FY19 under the DOE’s Battery ReCell Center for the Annual Merit Review conducted by the Vehicle Technologies Office.
View article: Influence of metallic contaminants on the electrochemical and thermal behavior of Li-ion electrodes
Influence of metallic contaminants on the electrochemical and thermal behavior of Li-ion electrodes Open
View article: Impact of secondary particle size and two-layer architectures on the high-rate performance of thick electrodes in lithium-ion battery pouch cells
Impact of secondary particle size and two-layer architectures on the high-rate performance of thick electrodes in lithium-ion battery pouch cells Open
View article: Methodologies for Design, Characterization and Testing of Electrolytes that Enable Extreme Fast Charging of Lithium-ion Cells
Methodologies for Design, Characterization and Testing of Electrolytes that Enable Extreme Fast Charging of Lithium-ion Cells Open
View article: Fast-Charging Aging Considerations: Incorporation and Alignment of Cell Design and Material Degradation Pathways
Fast-Charging Aging Considerations: Incorporation and Alignment of Cell Design and Material Degradation Pathways Open
Fast charging of batteries for electric vehicles is seen as one of the most direct ways to enhance adoption. Currently, fast charging is limited by increased cell aging, which is primarily driven by Li plating and degradation of cathode ma…
View article: Revealing causes of macroscale heterogeneity in lithium ion pouch cells via synchrotron X-ray diffraction
Revealing causes of macroscale heterogeneity in lithium ion pouch cells via synchrotron X-ray diffraction Open
View article: Effect of Anode Porosity and Temperature on the Performance and Lithium Plating During Fast‐Charging of Lithium‐Ion Cells
Effect of Anode Porosity and Temperature on the Performance and Lithium Plating During Fast‐Charging of Lithium‐Ion Cells Open
Twenty‐four single‐layer ≈32 mAh pouch cells are tested to determine the effect of electrode porosity on lithium plating. Twelve cells contain a graphite electrode that is 26% porous, and 47% for the other twelve. The cells are cycled usin…