Search Results - "Freunberger, Stefan A."

Biredox ionic liquids with solid-like redox density in the liquid state for high-energy supercapacitors by Mourad, Eléonore, Coustan, Laura, Lannelongue, Pierre, Zigah, Dodzi, Mehdi, Ahmad, Vioux, André, Freunberger, Stefan A., Favier, Frédéric, Fontaine, Olivier

“…Kinetics of electrochemical reactions are several orders of magnitude slower in solids than in liquids as a result of the much lower ion diffusivity. Yet, the…”
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Mechanism and performance of lithium-oxygen batteries - a perspective by Mahne, Nika, Fontaine, Olivier, Thotiyl, Musthafa Ottakam, Wilkening, Martin, Freunberger, Stefan A

“…Rechargeable Li-O 2 batteries have amongst the highest formal energy and could store significantly more energy than other rechargeable batteries in practice if…”
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Charging a Li–O2 battery using a redox mediator by Chen, Yuhui, Freunberger, Stefan A., Peng, Zhangquan, Fontaine, Olivier, Bruce, Peter G.

“…The non-aqueous Li–air (O 2 ) battery is receiving intense interest because its theoretical specific energy exceeds that of Li-ion batteries. Recharging the…”
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A stable cathode for the aprotic Li–O2 battery by Ottakam Thotiyl, Muhammed M., Freunberger, Stefan A., Peng, Zhangquan, Chen, Yuhui, Liu, Zheng, Bruce, Peter G.

“…Rechargeable lithium–air (O 2 ) batteries are receiving intense interest because their high theoretical specific energy exceeds that of lithium-ion batteries…”
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Challenges Facing Lithium Batteries and Electrical Double-Layer Capacitors by Choi, Nam-Soon, Chen, Zonghai, Freunberger, Stefan A., Ji, Xiulei, Sun, Yang-Kook, Amine, Khalil, Yushin, Gleb, Nazar, Linda F., Cho, Jaephil, Bruce, Peter G.

“…Energy‐storage technologies, including electrical double‐layer capacitors and rechargeable batteries, have attracted significant attention for applications in…”
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An Electrolyte for Reversible Cycling of Sodium Metal and Intercalation Compounds by Schafzahl, Lukas, Hanzu, Ilie, Wilkening, Martin, Freunberger, Stefan A.

“…Na battery chemistries show poor passivation behavior of low voltage Na storage compounds and Na metal with organic carbonate‐based electrolytes adopted from…”
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True performance metrics in beyond-intercalation batteries by Freunberger, Stefan A.

“…Beyond-intercalation batteries promise a step-change in energy storage compared to intercalation-based lithium-ion and sodium-ion batteries. However, only…”
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Persistent and reversible solid iodine electrodeposition in nanoporous carbons by Prehal, Christian, Fitzek, Harald, Kothleitner, Gerald, Presser, Volker, Gollas, Bernhard, Freunberger, Stefan A., Abbas, Qamar

“…Aqueous iodine based electrochemical energy storage is considered a potential candidate to improve sustainability and performance of current battery and…”
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On the nanoscale structural evolution of solid discharge products in lithium-sulfur batteries using operando scattering by Prehal, Christian, von Mentlen, Jean-Marc, Drvarič Talian, Sara, Vizintin, Alen, Dominko, Robert, Amenitsch, Heinz, Porcar, Lionel, Freunberger, Stefan A., Wood, Vanessa

“…The inadequate understanding of the mechanisms that reversibly convert molecular sulfur (S) into lithium sulfide (Li 2 S) via soluble polysulfides (PSs)…”
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DABCOnium: An Efficient and High‐Voltage Stable Singlet Oxygen Quencher for Metal–O2 Cells by Petit, Yann K., Leypold, Christian, Mahne, Nika, Mourad, Eléonore, Schafzahl, Lukas, Slugovc, Christian, Borisov, Sergey M., Freunberger, Stefan A.

“…Singlet oxygen (1O2) causes a major fraction of the parasitic chemistry during the cycling of non‐aqueous alkali metal‐O2 batteries and also contributes to…”
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Singlet oxygen generation as a major cause for parasitic reactions during cycling of aprotic lithium–oxygen batteries by Mahne, Nika, Schafzahl, Bettina, Leypold, Christian, Leypold, Mario, Grumm, Sandra, Leitgeb, Anita, Strohmeier, Gernot A., Wilkening, Martin, Fontaine, Olivier, Kramer, Denis, Slugovc, Christian, Borisov, Sergey M., Freunberger, Stefan A.

“…Non-aqueous metal–oxygen batteries depend critically on the reversible formation/decomposition of metal oxides on cycling. Irreversible parasitic reactions…”
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A Moisture- and Oxygen-Impermeable Separator for Aprotic Li-O2 Batteries by Kim, Byung Gon, Kim, Joo-Seong, Min, Jaeyun, Lee, Yong-Hee, Choi, Jeong Hoon, Jang, Min Chul, Freunberger, Stefan A., Choi, Jang Wook

“…Despite the unparalleled theoretical gravimetric energy, Li‐O2 batteries are still under a research stage because of their insufficient cycle lives. While the…”
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Deactivation of redox mediators in lithium-oxygen batteries by singlet oxygen by Kwak, Won-Jin, Kim, Hun, Petit, Yann K., Leypold, Christian, Nguyen, Trung Thien, Mahne, Nika, Redfern, Paul, Curtiss, Larry A., Jung, Hun-Gi, Borisov, Sergey M., Freunberger, Stefan A., Sun, Yang-Kook

“…Non-aqueous lithium-oxygen batteries cycle by forming lithium peroxide during discharge and oxidizing it during recharge. The significant problem of oxidizing…”
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Anisotropic, effective diffusivity of porous gas diffusion layer materials for PEFC by Flückiger, Reto, Freunberger, Stefan A., Kramer, Denis, Wokaun, Alexander, Scherer, Günther G., Büchi, Felix N.

“…A comparative, experimental diffusivity study of gas diffusion layer (GDL) materials for polymer electrolyte fuel cells (PEFC) is presented for the first time…”
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Author Correction: Persistent and reversible solid iodine electrodeposition in nanoporous carbons by Prehal, Christian, Fitzek, Harald, Kothleitner, Gerald, Presser, Volker, Gollas, Bernhard, Freunberger, Stefan A., Abbas, Qamar

“…An amendment to this paper has been published and can be accessed via a link at the top of the paper…”
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Aprotic Li–O2 Battery: Influence of Complexing Agents on Oxygen Reduction in an Aprotic Solvent by Li, Chunmei, Fontaine, Olivier, Freunberger, Stefan A, Johnson, Lee, Grugeon, Sylvie, Laruelle, Stéphane, Bruce, Peter G, Armand, Michel

“…Several problems arise at the O2 (positive) electrode in the Li-air battery, including solvent/electrode decomposition and electrode passivation by insulating…”
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Electrochemical Oxidation of Lithium Carbonate Generates Singlet Oxygen by Mahne, Nika, Renfrew, Sara E., McCloskey, Bryan D., Freunberger, Stefan A.

“…Solid alkali metal carbonates are universal passivation layer components of intercalation battery materials and common side products in metal‐O2 batteries, and…”
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A Reversible and Higher-Rate Li-O2 Battery by ZHANGQUAN PENG, FREUNBERGER, Stefan A, YUHUI CHEN, BRUCE, Peter G

“…The rechargeable nonaqueous lithium-air (Li-O(2)) battery is receiving a great deal of interest because, theoretically, its specific energy far exceeds the…”
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Lithium–Oxygen Batteries and Related Systems: Potential, Status, and Future by Kwak, Won-Jin, Rosy, Sharon, Daniel, Xia, Chun, Kim, Hun, Johnson, Lee R, Bruce, Peter G, Nazar, Linda F, Sun, Yang-Kook, Frimer, Aryeh A, Noked, Malachi, Freunberger, Stefan A, Aurbach, Doron

“…The goal of limiting global warming to 1.5 °C requires a drastic reduction in CO2 emissions across many sectors of the world economy. Batteries are vital to…”
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To DISP or Not? The Far‐Reaching Reaction Mechanisms Underpinning Lithium‐Air Batteries by Jethwa, Rajesh B., Mondal, Soumyadip, Pant, Bhargavi, Freunberger, Stefan A.

“…The short history of research on Li−O2 batteries has seen a remarkable number of mechanistic U‐turns over the years. From the initial use of carbonate…”
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