Martin Winter
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View article: Lithium Squarate as Sacrificing <i>Electrolyte</i> Additive for Prelithiation: Case Study in Zero‐Excess Lithium Metal Batteries
Lithium Squarate as Sacrificing <i>Electrolyte</i> Additive for Prelithiation: Case Study in Zero‐Excess Lithium Metal Batteries Open
Among different approaches, the prelithiation via sacrificing additives can be technically relatively easy applied. In this work, lithium squarate (Li 2 C 4 O 4 ) as a literature‐known representative is investigated in zero‐excess lithium …
View article: Low‐Carbon Poly(3‐vinyl‐ <i>N</i> ‐methylphenothiazine) Electrode Formulation Using PEDOT:PSS (poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate)) for Lithium‐Based Energy Storage
Low‐Carbon Poly(3‐vinyl‐ <i>N</i> ‐methylphenothiazine) Electrode Formulation Using PEDOT:PSS (poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate)) for Lithium‐Based Energy Storage Open
Metal‐free organic electrode materials are of increasing interest due to their environmental compatibility, natural abundance, and structural versatility. Poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is an intrinsic…
View article: Influence of the Degree of Substitution of Carboxymethyl Cellulose Binders on the Properties and Performance of Aqueously Processed LiNi <sub>0.6</sub> Mn <sub>0.2</sub> Co <sub>0.2</sub> O <sub>2</sub> ‐Based Positive Electrodes—A Comparative Study
Influence of the Degree of Substitution of Carboxymethyl Cellulose Binders on the Properties and Performance of Aqueously Processed LiNi <sub>0.6</sub> Mn <sub>0.2</sub> Co <sub>0.2</sub> O <sub>2</sub> ‐Based Positive Electrodes—A Comparative Study Open
The production of positive electrodes for lithium ion batteries typically involves the use of the environmentally harmful solvent N ‐methyl‐2‐pyrrolidone to process the binder polyvinylidene difluoride. An alternative approach is aqueous p…
View article: Fast‐Charging of Solid‐State Batteries Enabled by Functional Additives Infused into High‐Mass‐Loading Nickel Manganese Cobalt Cathodes
Fast‐Charging of Solid‐State Batteries Enabled by Functional Additives Infused into High‐Mass‐Loading Nickel Manganese Cobalt Cathodes Open
Additive‐infused processing of lithium nickel manganese cobalt (NMC) cathodes enables high mass loadings (≈6.5 mg cm −2 ) and fast charging (1.0C) for completely solid‐state polymer‐based lithium metal batteries. Solid‐state batteries (SSB…
View article: PFAS Free Organic Carbonate‐Based Electrolyte Formulation for LNMO||SiGr Cell Chemistry
PFAS Free Organic Carbonate‐Based Electrolyte Formulation for LNMO||SiGr Cell Chemistry Open
A per‐ and polyfluoroalkyl substances (PFAS) free electrolyte formulation for the high voltage lithium nickel manganese oxide (LNMO)||silicon‐graphite (SiGr) per‐ and polyfluoroalkyl substances (20 wt.% silicon) cell chemistry is developed…
View article: Modification of the Solid Electrolyte Interphase on SiGr Electrodes by a Prelithiation Method Using Passivated Lithium Metal Powder
Modification of the Solid Electrolyte Interphase on SiGr Electrodes by a Prelithiation Method Using Passivated Lithium Metal Powder Open
Negative electrode materials with high specific energy, such as SiGr, are essential to decrease battery cell weight and volume while allowing improved range and design flexibilities for electric vehicles. Among different SiGr anode prelith…
View article: Investigation of Degradation Pathways in Fluoroethylene Carbonate Based Electrolytes via Chromatographic Techniques
Investigation of Degradation Pathways in Fluoroethylene Carbonate Based Electrolytes via Chromatographic Techniques Open
For enhancing battery key performance indicators, like high voltage, safety, or lifetime, tailored electrolytes are crucial. Additives enable modifications of the solid electrolyte interphase (SEI) improving its electrochemical stability o…
View article: Balancing Polysulfide Distribution in “Anode‐Free” Lithium–Sulfide Batteries
Balancing Polysulfide Distribution in “Anode‐Free” Lithium–Sulfide Batteries Open
Lithium–sulfide positive electrodes represent a promising alternative to established transition metal‐based positive electrodes due to enhanced specific capacity and sustainability. While positive electrodes containing elemental sulfur req…
View article: Toward Practical Li‐Ion Cells With Li/Mn‐Rich Layered Oxide Cathodes: A Techno‐Economic Perspective on Material and Cell Design
Toward Practical Li‐Ion Cells With Li/Mn‐Rich Layered Oxide Cathodes: A Techno‐Economic Perspective on Material and Cell Design Open
Li/Mn‐rich layered oxide (LMR) cathode active materials offer a pathway towards high specific energy and low‐cost Li ion batteries (LIBs) due to their high practical specific discharge capacity (>250 mAh g −1 ) at moderate discharge voltag…
View article: Alloying Interlayers for Anode‐Less Lithium‐Metal Polymer Batteries
Alloying Interlayers for Anode‐Less Lithium‐Metal Polymer Batteries Open
Anode‐less lithium‐metal batteries potentially offer further increased energy densities. However, the Coulombic efficiency (CE) of lithium plating and stripping, as a classical measure of Li inventory reversibility, is commonly still insuf…
View article: Origin of Faster Capacity Fade for Lower Electrolyte Amounts in Lithium Metal Batteries: Electrolyte “Dry‐Out”?
Origin of Faster Capacity Fade for Lower Electrolyte Amounts in Lithium Metal Batteries: Electrolyte “Dry‐Out”? Open
In lithium metal batteries, the cycle life relevantly declines with decreasing electrolyte amount. The capacity decay is kinetically reasoned as shown by rises in cell resistances, in particular for the discharge processes, as indicated by…
View article: Multi‐Valent Cation Strategies for Controlling Interphase Chemistry at the Lithium Metal Anode
Multi‐Valent Cation Strategies for Controlling Interphase Chemistry at the Lithium Metal Anode Open
The effectiveness of a solid electrolyte interphase (SEI) in lithium metal batteries (LMBs) is crucial for the reversible deposition and dissolution of lithium (Li). Herein, a multi‐valent cation (MVC) is proposed approach to enable superi…
View article: Characterization of Binder Materials from Lithium Ion Batteries by Fingerprint Analysis with Pyrolysis‐Gas Chromatography‐Mass Spectrometry
Characterization of Binder Materials from Lithium Ion Batteries by Fingerprint Analysis with Pyrolysis‐Gas Chromatography‐Mass Spectrometry Open
Binders are important inactive materials for the performance and safety of lithium ion batteries (LIBs). Their identification from unknown cells or mixed recycling waste streams for teardown analysis or process control can be challenging. …
View article: Boosting the Energy Density of “Anode‐Free” Lithium Metal Batteries via Electrospun Polymeric Scaffolds
Boosting the Energy Density of “Anode‐Free” Lithium Metal Batteries via Electrospun Polymeric Scaffolds Open
While “anode‐free” or “zero‐excess” battery designs may maximize the obtainable energy density of batteries based on metal deposition, occurring losses of capacity are not replenished by a negative electrode metal reservoir, limiting cycle…
View article: Competitive Rechargeable Zinc Batteries for Energy Storage
Competitive Rechargeable Zinc Batteries for Energy Storage Open
The continuously increased demand for electrical energy and the associated strong growth in renewable energy necessitate robust, sustainable, and cost‐effective stationary energy storage solutions. This review paper evaluates zinc‐based ba…
View article: Uncovering the Residual Electrolyte Quantity in Recycled Battery Black Mass via Liquid Chromatography Tandem Mass Spectrometry and Ion Chromatography‐Conductivity Detection
Uncovering the Residual Electrolyte Quantity in Recycled Battery Black Mass via Liquid Chromatography Tandem Mass Spectrometry and Ion Chromatography‐Conductivity Detection Open
A workflow for the quantification of electrolyte residues, including linear and cyclic carbonates, conducting salt and selected degradation products from shredded lithium ion battery material black mass, is developed. Therefore, a liquid c…
View article: A Dry‐Mechanical Approach for Scrap Recycling of Dry‐Processed Lithium Ion Battery Cathodes
A Dry‐Mechanical Approach for Scrap Recycling of Dry‐Processed Lithium Ion Battery Cathodes Open
Dry electrode processing using polytetrafluoroethylene (PTFE) as binder is promising for the manufacturing of lithium ion battery cathodes, as it eliminates energy‐ and cost‐intensive solvent evaporation and recovery. Above‐average scrap r…
View article: From Fabrication to Failure—Aqueous Processing, Electrolyte Tuning, and Degradation Mechanism Elucidation in Poly(3‐Vinyl‐<i>N</i>‐Methylphenoxazine) Positive Electrodes
From Fabrication to Failure—Aqueous Processing, Electrolyte Tuning, and Degradation Mechanism Elucidation in Poly(3‐Vinyl‐<i>N</i>‐Methylphenoxazine) Positive Electrodes Open
Organic electrode materials are considered the next generation of battery electrode materials due to their environmental friendliness, low toxicity, and competitive specific capacities. Herein, a systematic study of the processing of the r…
View article: Toward Higher Prelithiation Degree of High‐Capacity Si‐Based Anodes via Physical Vapor Deposition: Impact on Homogeneity and Performance
Toward Higher Prelithiation Degree of High‐Capacity Si‐Based Anodes via Physical Vapor Deposition: Impact on Homogeneity and Performance Open
This study focuses on prelithiation of high‐capacity Si electrodes (11.9 mAh cm −2 ) via physical vapor deposition, where high purity and homogeneity is expected. However, carbonate impurities on freshly deposited Li are shown to be inevit…
View article: Quantitative and Spatially Resolved Evaluation of Lithium Plating in Lithium Ion Batteries with Manufacturing Defects
Quantitative and Spatially Resolved Evaluation of Lithium Plating in Lithium Ion Batteries with Manufacturing Defects Open
Small manufacturing defects within a lithium ion battery (LIB) might not be detected by typical end-of-line tests, but they might impact cell safety, which should be investigated. Therefore, this work experimentally simulates three possibl…
View article: Versatile Solvent‐Free Synthesis of Composite Polymer Electrolytes for Thin High‐Performance Solid‐State Lithium Metal Batteries
Versatile Solvent‐Free Synthesis of Composite Polymer Electrolytes for Thin High‐Performance Solid‐State Lithium Metal Batteries Open
The development of high‐performance solid‐state lithium metal batteries (SSB s ) relies on the invention of efficient composite polymer electrolytes (CPE s ) that offer both high ionic conductivity and mechanical stability. However, mixing…
View article: Importance of Fluorine in High Voltage Electrolytes for LNMO||SiGr Cell Chemistry
Importance of Fluorine in High Voltage Electrolytes for LNMO||SiGr Cell Chemistry Open
Lithium nickel manganese oxide (LNMO) and silicon/graphite (SiGr) are promising active materials for high voltage lithium ion batteries attributed to the high operating potential versus Li|Li + of LNMO and the high specific discharge capac…
View article: NANOSPRESSO: toward personalized, locally produced nucleic acid nanomedicines
NANOSPRESSO: toward personalized, locally produced nucleic acid nanomedicines Open
The NANOSPRESSO project is a pioneering response to the complex challenge of treating orphan diseases, which, despite affecting millions of people globally, have only scant therapeutic options. This initiative represents a paradigm shift b…
View article: Small cuts, big questions: the impact of incision length in minimally invasive robotic cardiac surgery
Small cuts, big questions: the impact of incision length in minimally invasive robotic cardiac surgery Open
Introduction Evidence on incision lengths for ports and cardiopulmonary bypass (CPB) cannulation in robotic cardiac surgery is limited. This study aimed to assess these metrics and influencing factors. Methods 204 patients underwent roboti…
View article: Design of Fluorine‐Free Weakly Coordinating Electrolyte Solvents with Enhanced Oxidative Stability
Design of Fluorine‐Free Weakly Coordinating Electrolyte Solvents with Enhanced Oxidative Stability Open
High concentrations of conducting salt in electrolyte formulations enhance the agglomeration of ionic species, which has been demonstrated to yield anion‐derived electrode–electrolyte interphases and improved reversibility in several batte…