2016
DOI: 10.1039/c6cp04251a
|View full text |Cite
|
Sign up to set email alerts
|

Investigating lithium-ion battery materials during overcharge-induced thermal runaway: an operando and multi-scale X-ray CT study

Abstract: Catastrophic failure of lithium-ion batteries occurs across multiple length scales and over very short time periods. A combination of high-speed operando tomography, thermal imaging and electrochemical measurements is used to probe the degradation mechanisms leading up to overcharge-induced thermal runaway of a LiCoO pouch cell, through its interrelated dynamic structural, thermal and electrical responses. Failure mechanisms across multiple length scales are explored using a post-mortem multi-scale tomography … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1

Citation Types

3
107
1

Year Published

2017
2017
2024
2024

Publication Types

Select...
6
1

Relationship

3
4

Authors

Journals

citations
Cited by 156 publications
(111 citation statements)
references
References 39 publications
3
107
1
Order By: Relevance
“…11,12,15,16 To understand the variation of failure mechanisms in response to different abuse conditions, a spatio-temporal description of thermal runaway resulting from each scenario is needed. High-speed X-ray computed tomography (CT) and radiography have been used in previous studies to visualize the internal breakdown and ejection of active materials following thermal runaway induced via thermal abuse, 17 electrical overcharge 18 and internal short-circuiting. 8 Failures induced via intrusive mechanical methods are expected to deviate most significantly from other in-field failures, in particular internal short-circuiting, which nail penetration is sometimes used to simulate.…”
mentioning
confidence: 99%
“…11,12,15,16 To understand the variation of failure mechanisms in response to different abuse conditions, a spatio-temporal description of thermal runaway resulting from each scenario is needed. High-speed X-ray computed tomography (CT) and radiography have been used in previous studies to visualize the internal breakdown and ejection of active materials following thermal runaway induced via thermal abuse, 17 electrical overcharge 18 and internal short-circuiting. 8 Failures induced via intrusive mechanical methods are expected to deviate most significantly from other in-field failures, in particular internal short-circuiting, which nail penetration is sometimes used to simulate.…”
mentioning
confidence: 99%
“…This multi-scale challenge can be effectively addressed by correlative lab-based imaging instrumentation, using optical, electron and ion beam microscopy and 3D micro-and nano-XRM [25]. Using this correlative imaging approach, each modality is used for its unique strength: for example, the tunable magnification of SEM in 2D and switchable energy dispersive X-ray 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Initial investigations were performed using a ZEISS Xradia 520 Versa X-ray microscope (Carl Zeiss X-ray Microscopy, Pleasanton, CA, USA), equipped with a 0.4× objective lens to provide a 3D isotropic voxel size of 22 ”m across the entire imaging volume.…”
Section: Introductionmentioning
confidence: 99%
“…The authors and others have led work over the past 5 years in the application of X-ray tomography to explore these materials both ex-situ [14,[17][18][19][20][21] and in-situ [14,15,22,23]. Additional work using tomography and radiography to characterize cell architecture during failure [22] and post mortem [24,25] as well as to understand the role of safety features [26][27][28] help to build a comprehensive understanding of the role of each component in driving device degradation and failure. This work is complemented by extensive investigations using SEM [29,30] Collectively, these studies highlight the importance of understanding the multi-scale nature of Li-ion batteries from the pack to the particle levels [25,36]; it is essential that researchers identify appropriate length scale(s) for understanding key mechanisms that affect the performance and reliability of cells [36].…”
mentioning
confidence: 99%
See 2 more Smart Citations