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What can we Learn From Thermodynamics of Lithium Ion Batteries?

Wednesday, May 03, 2017 | 10:00 a.m. EDT USA / 4:00 p.m. CET Europe / 10:00 p.m. China

Duration – 1 hour

Entropymetry is a new science and technology applied to lithium ion batteries. Battery temperature varies constantly owing to changing environment temperature and battery operation. At a cell rest the open-circuit voltage (OCV) varies linearly with temperature, the slope of which is proportional to entropy. Enthalpy can also be derived at any state of charge (SOC) or OCV of the cell. Analysis of entropy and enthalpy profiles teaches on the battery chemistry and on many of key cell states, including SOC, state of health (SOH) and state of safety (SOS). The electrochemical thermodynamics measurements (ETM) technology developed helps improve the accuracy of battery states assessment and battery performances including energy density and life. All these aspects will be presented and discussed.

This webinar will focus on the following key topics:

• Battery thermodynamics data measurements: Fundamentals and Methods
• Entropy and enthalpy profile of typical anode and cathode materials: phase diagram
• Entropy and enthalpy profile of typical lithium ion cells
• LIB Cell chemistry, state of charge, state of health and state of safety
• Using thermodynamics to improve LIB performance

A PDF copy of the presentation will be sent to all attendees after the event.

Please register for this webinar at the following address:

https://attendee.gototraining.com/r/4240853012515313665

Presenter

Rachid Yazami – Energy Research Institute, Nanyang Technological University, Singapore

• Winner of the Draper Prize in 2014 for the invention in 1980 of the graphite anode for lithium ion batteries
• Awards include IEEE, NATO, JSPS, NASA and Marius Lavet Prize
• Served the president office of the International Battery Association (IBA) (2003-2006)
• Research Director (Professor) with the CNRS, France
• Currently Director of the Energy Storage programs at ERIAN-NTU, Singapore
• Author/inventor of over 125 patents and 200 scientific papers, books, book chapters, including in battery thermodynamics
• Developed “Refillable” lithium batteries for electro-mobility market

Upcoming Webinar Sessions

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Understand and Prevent Battery Fires and Explosions – and Avoid Costly Failures Like the Samsung Note 7

Wednesday, May 31, 2017 | 10:00 a.m. EDT USA / 4:00 p.m. CET Europe / 10:00 p.m. China

Duration – 1 hour

Modern batteries (eg Li-Ion) contain hazardous chemicals & they heat up during use: this combination always has the potential to cause fires & explosions. This presentation will focus on improving the understanding of how these incidents occur, what can be done to avoid them & how the risk can be minimized during early stage design.

The Samsung Note 7 phone & Boeing Dreamliner airplane fires are very costly examples of how even large corporations fail to understand the potential fire risk of batteries.

The solution lies in knowledge of heat generation rate during normal use & information about safe boundaries such as temperature, discharge rate & overcharge, in realistic situations that represent actual use conditions. Data from commercial batteries of different types will be used to illustrate these points.

A relatively new technique will also be discussed with data, which allows total heat output during discharge to be measured on-line and this can be used both for design and battery modelling. Examples of the data will be provided.

This webinar will focus on the following key topics:

• Why battery fires & explosions occur
• How to design safer batteries though understanding of heat generation
• Video evidence of batteries under explosive conditions
• How better thermal management systems can be designed – based on heat measurement from isothermal calorimetry
• Laboratory instruments suitable for testing and data generation

A PDF copy of the presentation will be sent to all attendees after the event.

Please register for this webinar at the following address:

https://attendee.gototraining.com/r/2369850360167121410

Presenter

Dr. Jasbir Singh – Managing Director at Hazard Evaluation Laboratory

Jasbir is a chemical engineer specializing in thermal hazards and calorimetry, traditionally for the chemical industry but now increasingly involved in battery safety, especially Li-ion EV and related types.

A graduate of Imperial College (London), where he undertook PhD into combustion and explosions, his experience includes many years in process design for the chemical and petrochemical industries. He is currently developing test methods and instruments for use in design of battery thermal management systems.