Peter Bugryniec

Peter Bugryniec
The University of Sheffield | Sheffield · Department of Chemical and Biological Engineering

Doctor of Philosophy
Carrying out reaction network analysis on Li-ion battery thermal runway as part of the Faraday SafeBatt project.

About

14
Publications
2,792
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119
Citations
Introduction
Dr Peter Bugryniec is a Research Associate in The Chemical and Biological Engineering Department at the University of Sheffield. His research interest is in Lithium-ion battery safety, focusing on the development of computational models of Li-ion battery abuse. He is currently a member in the SafeBatt project of The Faraday Institute. He is also a member of the Brown Group (http://www.browngroupsheffield.com/) for the computational modelling of clean energy and process systems.
Additional affiliations
June 2021 - present
The University of Sheffield
Position
  • Research Associate
Description
  • Carrying out reaction network analysis on Li-ion battery thermal runway as part of the Faraday SafeBatt project. Describing the decomposition of battery material during thermal runaway through DFT calculation and micro-kinetic modelling. This is to enable the development of Li-ion battery abuse models that are capable of predicting toxicity and explosivity hazards. This is enabled by micro-kinetic modeling methods that allow the prediction of individual decomposition species.
July 2020 - June 2021
The University of Sheffield
Position
  • Research Assistant
Description
  • Aiding Solomon Brown's group, in Clean Energy & Process Systems, across various projects. Carrying out lab support, industry engagement and literature reviews.
Education
September 2015 - July 2020
The University of Sheffield
Field of study
  • Experimental and Computational Analyses of Thermal Runaway in Lithium Iron Phosphate Cells and Battery Packs
September 2010 - June 2014
The University of Manchester
Field of study
  • Mechanical Engineering

Publications

Publications (14)
Article
Overheating by oven exposure testing is a fundamental method to determine the severity of thermal runaway (TR) in lithium-ion cells. The TR behavior of lithium iron phosphate (LFP) cells under convection oven exposure is quantified and a comparison is made of their stability and severity against that of lithium metal oxide cells under similar condi...
Article
In this paper, accelerated rate calorimetry (ARC) and oven exposure, are used to investigate thermal runaway (TR) in lithium-ion cells. Previous work shows that lithium iron phosphate (LFP) cells have a lower risk of TR over other Li-ion chemistries. ARC is carried out on cells at various SOC to identify which decomposition reactions are contributi...
Article
Thermal runaway (TR) is a significant safety concern for Li-ion batteries (LIBs), which, through computational modelling can be better understood. However, TR models for LIBs lack a proper representation of the build-up of pressure inside a cell under abuse, which is integral to predicting cell venting. Here, an advanced abuse model (AAM) is develo...
Chapter
Full-text available
Li-ion batteries (LIBs) are widely adopted in EVs and stationary battery energy storage due to their superior performance over other battery chemistries. But LIBs come with the risk of thermal runaway (TR) which can lead to fire and explosion of the LIB. Hence, improving our understanding of TR is key to improving LIB safety. To achieve this, we ai...
Presentation
Full-text available
Preliminary work into developing microkinetic models for Li-ion battery thermal runaway decomposition reactions, using gaussian processes to optimize model parameters and minim reaction network. Presentation covers applying the new methodology to the ethylene carbonate solvent, a common electrolyte component, decomposition reactions.
Conference Paper
Full-text available
It is widely accepted that Lithium-Iron Phosphate (LFP) cathodes are the safest chemistry for Li-ion cells, however the study of them assembled in to battery modules or packs is lacking. Hence, this work provides the first computational study investigating the potential of thermal runaway propagation (TRP) in packs constructed of LFP 18650 cells. U...
Article
Full-text available
It is widely accepted that Lithium-Iron Phosphate (LFP) cathodes are the safest chemistry for Li-ion cells, however the study of them assembled in to battery modules or packs is lacking. Hence, this work provides the first computational study investigating the potential of thermal runaway propagation (TRP) in packs constructed of LFP 18650 cells. U...
Article
A particular safety issue with Lithium-ion (Li-ion) cells is thermal runaway (TR), which is the exothermic decomposition of cell components creating an uncontrollable temperature rise leading to fires and explosions. The modelling of TR is difficult due to the broad range of cell properties and potential conditions. Understanding the effect that th...
Presentation
Full-text available
Preliminary investigations of the abuse resilience of LFP battery packs, abused by the short circuit of a single cell while under extream environmental conditions. Results show that even under extream condition LFP cells lead to packs that are resilient to thermal runaway propagation.
Chapter
Lithium ion (Li-ion) cells are the most prominent electrochemical energy storage device in todays world as they are utilised in many applications across many scales. However, Li-ion cells can suffer from a severe safety issue known as thermal runaway (TR). This process is due to exothermic chemical decomposition of a cells components. Being able to...
Conference Paper
Overheating by oven exposure testing is a fundamental method to determine the severity of thermal runaway (TR) in lithium-ion cells. The TR behavior of lithium iron phosphate (LFP) cells under convection oven exposure is quantified and a comparison is made of their stability and severity against that of lithium metal oxide cells under similar condi...
Article
In this paper a novel method to determine the specific heat capacity of lithium-ion cells is proposed. The specific heat capacity is an important parameter for the thermal modelling of lithium-ion batteries and is not generally stated on cell datasheets or available from cell manufacturers. To determine the specific heat capacity can require the us...
Presentation
Full-text available
Results of accelerated rate calorimetry and oven abuse testing at different states of charge. Presentation shows, step-by-step, how the severity of TR reduced as SOC reduces under ARC testing. Also shows how LFP cells are much safer than other chemistries at all SOC. Under oven testing, cells are stable up to much higher temperature than other ch...
Poster
Full-text available
Discussion of cell safety in lithium iron phosphate cells under oven abuse and accelerated rate calorimetry testing.

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Projects

Projects (2)
Project
Improving the predictive capabilities of li-ion battery abuse models. By developing a methodology using DFT calculations and micro-kinetic modelling, the aim is to produce a model that allows prediction of thermal runaway toxicity and flammability hazards.
Archived project
-Experimental and computational assessment of the safety of lithium iron phosphate cells. -Computational assessment of LFP cells through the development of a thermal runaway abuse model via parameter estimation methods. -Experimental assessment and validation of model through accelerated rate calorimetry and oven abuse testing. -Assessment of LFP safety when used in a realistic battery module under different module configurations.