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A123 @ the Whiteboard: Plotting Power vs. Energy of A123's Nanophosphate®
 
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In this episode, we plot the power vs. energy of A123's proprietary Nanophosphate lithium ion battery chemistry on the Ragone curve
Views: 1602 A123 Systems
nanoHUB-U Rechargeable Batteries L1.3: Basic Concepts - Energy and Power in a Battery
 
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Table of Contents: 00:09 Lecture 1.3: Energy and Power in a Battery 00:26 Electrode Materials 01:28 The Voltage vs Capacity Plot 04:21 Maximum Theoretical Specific Energy 06:58 Energy and Energy Density 10:01 Power and Power Density 12:33 Ragone Plot This video is part of the nanoHUB-U course "Introduction to the Materials Science of Rechargeable Batteries " (http://nanohub.org/courses/imsb) This course will provide an introduction to the fundamentals behind the equilibrium and time-dependent response of existing and emerging chemistries of Li-ion battery materials. Effects of material selection and processing on the performance and reliability are presented as a means to develop conceptual guidelines to understand and improve battery designs. Example applications such as intercalation, SEI, and dendrite growth are presented. Integration of experimental microstructural aspects to coarse-graining measured properties, such as porosity, tortuosity and its associated reactivity, and classic and emerging battery architectures are presented. Principles summarizing the response of battery architectures are formulated and applied to propose battery design guidelines, to review existing porous electrode theory descriptions, and to summarize the current state-of-the-art of battery technology and its associated metrology.
Views: 2702 nanohubtechtalks
nanoHUB-U Rechargeable Batteries L1.4: Basic Concepts - Polarization Loses
 
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Table of Contents: 00:09 Lecture 1.4: Polarization Losses 00:18 Ragone Plot 02:48 Battery Components 05:13 Inside a Battery 07:25 Inside a Battery 09:57 Losses in a Rechargeable Battery 12:01 Equivalent Circuit 13:36 Concept of State of Charge 15:57 Contributions to Polarization Losses This video is part of the nanoHUB-U course "Introduction to the Materials Science of Rechargeable Batteries " (http://nanohub.org/courses/imsb) This course will provide an introduction to the fundamentals behind the equilibrium and time-dependent response of existing and emerging chemistries of Li-ion battery materials. Effects of material selection and processing on the performance and reliability are presented as a means to develop conceptual guidelines to understand and improve battery designs. Example applications such as intercalation, SEI, and dendrite growth are presented. Integration of experimental microstructural aspects to coarse-graining measured properties, such as porosity, tortuosity and its associated reactivity, and classic and emerging battery architectures are presented. Principles summarizing the response of battery architectures are formulated and applied to propose battery design guidelines, to review existing porous electrode theory descriptions, and to summarize the current state-of-the-art of battery technology and its associated metrology.
Views: 1681 nanohubtechtalks
nanoHUB-U Rechargeable Batteries L1.5: Basic Concepts - Summary
 
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Table of Contents: 00:09 Lecture 1.5: Week 1 Summary 00:20 A Sketch of a Rechargeable Battery 01:22 Potential of Electrodes 02:15 Battery Charge 03:25 Electrode Materials 05:10 Porous Battery Capacity 07:44 Energy and Energy Density 09:18 Power and Power Density 11:03 Ragone Plot This video is part of the nanoHUB-U course "Introduction to the Materials Science of Rechargeable Batteries " (http://nanohub.org/courses/imsb) This course will provide an introduction to the fundamentals behind the equilibrium and time-dependent response of existing and emerging chemistries of Li-ion battery materials. Effects of material selection and processing on the performance and reliability are presented as a means to develop conceptual guidelines to understand and improve battery designs. Example applications such as intercalation, SEI, and dendrite growth are presented. Integration of experimental microstructural aspects to coarse-graining measured properties, such as porosity, tortuosity and its associated reactivity, and classic and emerging battery architectures are presented. Principles summarizing the response of battery architectures are formulated and applied to propose battery design guidelines, to review existing porous electrode theory descriptions, and to summarize the current state-of-the-art of battery technology and its associated metrology.
Views: 1221 nanohubtechtalks
nanoHUB-U Rechargeable Batteries L2.6: Thermodynamics - The NaNiCl System
 
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Table of Contents: 00:09 The NaNiCl System 00:58 Materials Development for Sodium Metal Halide Batteries 01:43 GE Hybrid Locomotive 04:02 Battery Basics -- Power & Energy Metrics 05:42 Batteries by Vehicle Application 07:15 The NaNiCl2 System 10:00 Na-NiCl2 cell basic chemistry 12:08 Na-NiCl2 cell basic structure 13:41 Battery Structure 15:21 The NaNiCl System This video is part of the nanoHUB-U course "Introduction to the Materials Science of Rechargeable Batteries" (http://nanohub.org/courses/imsb) This course will provide an introduction to the fundamentals behind the equilibrium and time-dependent response of existing and emerging chemistries of Li-ion battery materials. Effects of material selection and processing on the performance and reliability are presented as a means to develop conceptual guidelines to understand and improve battery designs. Example applications such as intercalation, SEI, and dendrite growth are presented. Integration of experimental microstructural aspects to coarse-graining measured properties, such as porosity, tortuosity and its associated reactivity, and classic and emerging battery architectures are presented. Principles summarizing the response of battery architectures are formulated and applied to propose battery design guidelines, to review existing porous electrode theory descriptions, and to summarize the current state-of-the-art of battery technology and its associated metrology.
Views: 818 nanohubtechtalks
Conférence - JM Tarascon - Comment vivre sans énergies fossiles?  - Académie des sciences
 
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Conférence de Jean-Marie TARASCON intitulée Comment vivre sans énergies fossiles: Le rôle de la chimie et des batteries 00:00:00 Comment vivre sans énergies fossiles : Le rôle de la chimie et des batteries 00:00:59 Plan de l’exposé 00:01:57 Évolution historique de l’utilisation d’énergie dans le monde 00:03:35 Que représente cette puissance de 14 TeraWatts ??? 00:04:20 Problèmes associées à la conversion/ transport d’énergie 00:05:03 Répartition des sources d’énergie dans le monde 00:06:00 État des réserves d’énergie fossile 00:07:09 Qui consomme ces énergies ? 00:08:26 Effets du CO2 atmosphérique 00:09:23 Réchauffement climatique 00:09:59 A quoi peut-on attendre dans les prochaines années ? 00:10:46 Que peut-on attendre dans les prochaines années ? 00:11:11 Résoudre l’équation: Produire 14 TW supplémentaire d’énergie décarbonisée pour 2050 00:11:49 Différentes stratégies pour stabiliser les émissions de CO2 00:14:08 Différentes stratégies pour la conversion de l’énergie solaire 00:15:40 Différentes cellules photovoltaïques 00:17:33 Coût de l’électricité photovoltaïque : son évolution 00:18:27 Fluctuations des énergies renouvelables 00:19:37 Stockage de l’énergie: un autre défi du 21ème siècle 00:20:49 Les batteries et la voiture électrique: une longue histoire 00:21:49 Diagramme de Ragone 00:23:51 Les premiers pas de l’électricité 00:25:33 Après deux siècles d’évolution, où en sommes-nous ? 00:26:41 Principe de fonctionnement de la technologie à ions 00:28:24 La technologie à ions Lithium: le passage du massif au nano 00:30:03 Bénéfice de la double approche nano + enrobage 00:31:14 Du micro aux nano-matériaux : aspects bénéfiques 00:32:35 La Technologie à ions Lithium : Sa grande versatilité 00:33:25 La technologie à ions Lithium dans la société 00:34:32 Les besoins et les défis de demain: Développer des batteries Li-ion viables 00:35:21 Développer les batteries à ion Lithium éco-compatibles 00:36:12 Li-ion avancé: Matériaux d’électrodes dans le cadre du développement durable: Approche synthèse 00:37:22 Li-ion avancé: Matériaux d’électrodes dans le cadre du développement durable: Approche végétale 00:38:12 Problème du Lithium dans le cadre du développement durable … 00:39:13 Activité foisonnante depuis 5 ans sur les matériaux d’électrodes pour la technologie Na-ion 00:39:38 Prototypage de la technologie à ions Na+ 00:40:13 Comment augmenter la densité d’énergie tout en abaissant le coût … 00:41:22 Matériaux d’électrodes positives pour les Batteries à ions Li: Etat de l’art. 00:42:01 Nouveaux matériaux d’électrodes à potentiels élevés 00:42:55 Nouveaux composés polyanioniques isolés au sein du groupe 00:43:16 Des composés polyanioniques aux composés lamellaires pour augmenter les capacités 00:44:14 Le système LixCoO2 et son évolution durant les 20 dernières années 00:45:10 Comment simplifier le problème : Les bienfaits de la chimie de substitution 00:46:09 Origine de la capacité exacerbée 00:47:09 Comment développer des batteries à hautes densité d’énergie dans le cadre du développement durable ? 00:47:44 Au-delà Performances des systèmes Li-air par du Li-ionrapport à Li-ion 00:48:44 La batterie Li-air (Li-oxygène) 00:49:44 Le système Li-oxygène: quelles recherches ? 00:50:37 Des batteries classiques aux batteries à flux circulants (redox flow) pour un développement durable 00:51:00 Redox-­‐Flow : Principe, Avantages, Inconvénients 00:51:28 Pour augmenter l’Energie … faire circuler des solides ? 00:51:58 Le REDOX flow fait sa route: Salon de Genève 2014 00:52:34 Perspectives pour les 20 ou 30 prochaines années … 00:54:10 Véhicule électrique : de l’Arlésienne au boom actuel 00:54:23 Conclusions 00:56:03 Meilleurs matériaux-Batteries pour le stockage de l’énergie: contrainte de temps 00:56:48 Comment combattre cette échelle de temps : Expérience-Théorie-Instrumentation 00:58:44 Questions et réponses © Académie des sciences - Tous droits réservés