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Title: Next Generation Anodes for Lithium Ion Batteries: Thermodynamic Understanding and Abuse Performance.

Abstract

The objectives of this project are to elucidate degradation mechanisms, decomposition products, and abuse response for next generation silicon based anodes; and understand the contribution of various materials properties and cell build parameters towards thermal runaway enthalpies. Quantify the contributions from various cell parameters such as particle size, composition, state of charge (SOC), electrolyte to active materials ratio, etc.

Authors:
 [1];  [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1395208
Report Number(s):
SAND2017-10129R
657079
DOE Contract Number:
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Fenton, Kyle R., Allcorn, Eric, and Nagasubramanian, Ganesan. Next Generation Anodes for Lithium Ion Batteries: Thermodynamic Understanding and Abuse Performance.. United States: N. p., 2017. Web. doi:10.2172/1395208.
Fenton, Kyle R., Allcorn, Eric, & Nagasubramanian, Ganesan. Next Generation Anodes for Lithium Ion Batteries: Thermodynamic Understanding and Abuse Performance.. United States. doi:10.2172/1395208.
Fenton, Kyle R., Allcorn, Eric, and Nagasubramanian, Ganesan. 2017. "Next Generation Anodes for Lithium Ion Batteries: Thermodynamic Understanding and Abuse Performance.". United States. doi:10.2172/1395208. https://www.osti.gov/servlets/purl/1395208.
@article{osti_1395208,
title = {Next Generation Anodes for Lithium Ion Batteries: Thermodynamic Understanding and Abuse Performance.},
author = {Fenton, Kyle R. and Allcorn, Eric and Nagasubramanian, Ganesan},
abstractNote = {The objectives of this project are to elucidate degradation mechanisms, decomposition products, and abuse response for next generation silicon based anodes; and understand the contribution of various materials properties and cell build parameters towards thermal runaway enthalpies. Quantify the contributions from various cell parameters such as particle size, composition, state of charge (SOC), electrolyte to active materials ratio, etc.},
doi = {10.2172/1395208},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month = 9
}

Technical Report:

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  • The objectives of this report are as follows: elucidate degradation mechanisms, decomposition products, and abuse response for next generation silicon based anodes; and Understand the contribution of various materials properties and cell build parameters towards thermal runaway enthalpies. Quantify the contributions from particle size, composition, state of charge (SOC), electrolyte to active materials ratio, etc.
  • As we develop new materials to increase performance of lithium ion batteries for electric vehicles, the impact of potential safety and reliability issues become increasingly important. In addition to electrochemical performance increases (capacity, energy, cycle life, etc.), there are a variety of materials advancements that can be made to improve lithium-ion battery safety. Issues including energetic thermal runaway, electrolyte decomposition and flammability, anode SEI stability, and cell-level abuse tolerance behavior. Introduction of a next generation materials, such as silicon based anode, requires a full understanding of the abuse response and degradation mechanisms for these anodes. This work aims to understandmore » the breakdown of these materials during abuse conditions in order to develop an inherently safe power source for our next generation electric vehicles. The effect of materials level changes (electrolytes, additives, silicon particle size, silicon loading, etc.) to cell level abuse response and runaway reactions will be determined using several techniques. Experimentation will start with base material evaluations in coin cells and overall runaway energy will be evaluated using techniques such as differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and accelerating rate calorimetry (ARC). The goal is to understand the effect of materials parameters on the runaway reactions, which can then be correlated to the response seen on larger cells (18650). Experiments conducted showed that there was significant response from these electrodes. Efforts to minimize risk during testing were taken by development of a smaller capacity cylindrical design in order to quantify materials decision and how they manifest during abuse response.« less
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