Thermal characteristics of 80 °C storage-degraded 18650-type lithium-ion secondary cells

Taniguchi, Shuichi; Shironita, Sayoko; Konakawa, Kotaro; Mendoza-Hernandez, Omar Samuel; Sone, Yoshitsugu; Umeda, Minoru

doi:10.1016/j.jpowsour.2019.01.087

Cited by 32 publications

(6 citation statements)

References 22 publications

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Section: Resultssupporting

confidence: 87%

“…The significant variation between storage at TOC and BOC at 60 °C is attributed to increased electrolyte degradation when high-temperature storage is paired with high SOC. This echoes findings by Umeda et al 18 who showed faster onset of a thermal runaway for LCO-type 18650s stored at 80 °C and TOC as opposed to BOC, and by Dahn et al 19 who showed deleterious effects of higher voltages on overall SOC. These initial results suggest that reducing time spent at both high SOCs and high temperatures improve capacity retention relative to initial capacity for a 1C cycling rate.…”

Section: Resultssupporting

confidence: 85%

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Impact of Non-Arrhenius Temperature Behavior on the Fast-Charging Capabilities of LiCoO₂–Graphite Lithium-Ion Batteries

et al. 2021

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Fast-charging lithium-ion batteries in 15 min or less is an important capability that may lead to greater electric vehicle adoption but remains challenging to implement. Heating to moderate temperature (40–50 °C) during the fast-charge step has been introduced as one method to mitigate the loss of lithium inventory by enhancing transport and kinetics. Unfortunately, this edge has two sides as even moderate temperature elevation will accelerate capacity fade due to interface and electrolyte degradation. While the thermal enhancement of transport and degradation is intuitive, the mechanistic effects of various temperature ranges on fast-charging capabilities are under-reported. The present work examines the balance between aging, temperature, and charge rate and describes cycling protocols in combination with high-temperature ranges that may enable fast-charging capabilities. A galvanostatic intermittent titration technique (GITT) analysis reveals non-Arrhenius diffusion behavior at the cell level. This shift is attributed to a mechanistic difference in graphite staging at temperatures above and below 40 °C. Coupled with differential capacity and voltage analysis, we indicate the specific phase transition that is kinetically sluggish at low temperatures relative to the other phase transitions but is comparable to the other phase transitions at high temperatures. This reduction of the transport bottleneck, in addition to the benefits of thermal activation of diffusion, further minimizes the likelihood of lithium plating that is triggered by particle scale transport challenges well before full lithiation of the graphite. This helps to explain recently described outsized successes of elevated temperature fast-charge protocols, but also questions the temperature at which fast-charge should take place, as the diffusivity gains for 55 vs 45 °C are less dramatic than 45 vs 35 °C, and side reactions may deter operation above 50 °C. These diffusivity studies are connected with long-term aging studies which indicate improved high-temperature aging at lower states-of-charge rather than higher states-of-charge. Taken together, we introduce a cycling protocol utilizing a constant current fast-charge at high temperature to take advantage of lower overpotentials, shorter duration at high states-of-charge, and improved cell diffusivity.

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Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 85%

Impact of Non-Arrhenius Temperature Behavior on the Fast-Charging Capabilities of LiCoO₂–Graphite Lithium-Ion Batteries

et al. 2021

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“…As a sharp contrast, 1 m LiDFOB/SL (Movie S1, Supporting Information) and 1 m LiDFOB/SL + 5 wt% TMSP (Figure b; Movie S2, Supporting Information) are hard to be ignited. Accelerating rate calorimetry (ARC) technology has been widely used to study the thermal (safety) properties of battery materials, single battery cell and battery pack . Herein, ARC Heat‐Wait‐Search (HWS) mode is used to reveal the superior thermal stability of 1 m LiDFOB/SL + 5 wt% TMSP than 1 m LiPF 6 carbonates‐based electrolyte (Figure c).…”

Section: Resultsmentioning

confidence: 99%

Deciphering the Interface of a High‐Voltage (5 V‐Class) Li‐Ion Battery Containing Additive‐Assisted Sulfolane‐Based Electrolyte

Lü

et al. 2019

Small Methods

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Next generation high energy density lithium‐ion batteries have aroused great interests worldwide. Herein, in a high‐voltage (5 V‐class) LiNi0.5Mn1.5O4/MCMB (graphitic mesocarbon microbeads) battery system using 1 m lithium difluoro(oxalate)borate/sulfolane, tris(trimethylsilyl) phosphite (TMSP) additive is added to significantly improve room/high temperature cycling performances. The unchanged X‐ray diffraction patterns suggest the bulk crystal structure of cycled MCMB anode and LiNi0.5Mn1.5O4 cathode are well preserved. Moreover, soft X‐ray absorption spectroscopy (XAS) taken from bulk sensitive fluorescence‐yield (FY) mode reveals the unchanged bulk electronic structure of cycled LiNi0.5Mn1.5O4 cathode. Therefore, it is concluded that only interface instability contributes to capacity fading of full‐cells. However, electrode/electrolyte interface and corresponding interfacial reaction processes are always “enigmatic.” First, X‐ray photoelectron spectroscopy (XPS) and in situ differential electrochemical mass spectrometry (DEMS) are used to more accurately decipher the TMSP additive action mechanism in MCMB/electrolyte interfacial reaction processes, by identifying the interfacial solid and gas byproducts, respectively. Then, the crucial role of TMSP additive in modifying cathode/electrolyte interface is revealed by XPS and soft XAS taken from surface sensitive total electron yield (TEY) mode. This paper provides valuable perspectives for formulating novel electrolytes, and for more accurately depicting additive action mechanism in “enigmatic” electrode/electrolyte interfacial reaction processes.

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“…Moreover, high temperature also has an impact on the thermal stability of lithium-ion batteries. Tanguchi found that the state of charge (SOC) has the greatest impact on the battery safety during the high-temperature aging . The higher the SOC is, the worse the thermal stability is.…”

Section: Introductionmentioning

confidence: 99%

“…Tanguchi found that the state of charge (SOC) has the greatest impact on the battery safety during the high-temperature aging. 26 The higher the SOC is, the worse the thermal stability is. Ren discovered that high-temperature storage would lead to a decrease in the temperature rise rate and an increase in thermal stability of lithium-ion batteries, while high-temperature cycling would not lead to a change in the thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Heat Generation and Degradation Mechanism of Lithium-Ion Batteries during High-Temperature Aging

Shen

Wang

Zhang³

et al. 2022

ACS Omega

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High-temperature aging has a serious impact on the safety and performance of lithium-ion batteries. This work comprehensively investigates the evolution of heat generation characteristics upon discharging and electrochemical performance and the degradation mechanism during high-temperature aging. Post-mortem characterization analysis revealed that lithium plating is the main degradation mechanism. The occurrence of side reactions leads to cell capacity fading and electrochemical performance degradation. The DC resistance and AC impedance increase significantly, and the severe internal polarization makes the incremental capacity curve shift to lower voltage. In the early aging stage, the cell degrades slightly, and the temperature rise rate has not changed significantly upon discharging. The cell capacity plays a leading role, whose degradation makes the temperature rise decrease. With the aging deepening, the severe cell degradation makes the temperature rise rate increase significantly. Even if the capacity fading, the temperature rise still increases significantly compared to the fresh state. Furthermore, irreversible heat and reversible heat increase significantly with the aging deepening and current rate increasing.

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Thermal characteristics of 80 °C storage-degraded 18650-type lithium-ion secondary cells

Cited by 32 publications

References 22 publications

Impact of Non-Arrhenius Temperature Behavior on the Fast-Charging Capabilities of LiCoO₂–Graphite Lithium-Ion Batteries

Impact of Non-Arrhenius Temperature Behavior on the Fast-Charging Capabilities of LiCoO₂–Graphite Lithium-Ion Batteries

Deciphering the Interface of a High‐Voltage (5 V‐Class) Li‐Ion Battery Containing Additive‐Assisted Sulfolane‐Based Electrolyte

Heat Generation and Degradation Mechanism of Lithium-Ion Batteries during High-Temperature Aging

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Thermal characteristics of 80 °C storage-degraded 18650-type lithium-ion secondary cells

Cited by 32 publications

References 22 publications

Impact of Non-Arrhenius Temperature Behavior on the Fast-Charging Capabilities of LiCoO2–Graphite Lithium-Ion Batteries

Impact of Non-Arrhenius Temperature Behavior on the Fast-Charging Capabilities of LiCoO2–Graphite Lithium-Ion Batteries

Deciphering the Interface of a High‐Voltage (5 V‐Class) Li‐Ion Battery Containing Additive‐Assisted Sulfolane‐Based Electrolyte

Heat Generation and Degradation Mechanism of Lithium-Ion Batteries during High-Temperature Aging

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Product

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Thermal characteristics of 80 °C storage-degraded 18650-type lithium-ion secondary cells

Impact of Non-Arrhenius Temperature Behavior on the Fast-Charging Capabilities of LiCoO₂–Graphite Lithium-Ion Batteries

Impact of Non-Arrhenius Temperature Behavior on the Fast-Charging Capabilities of LiCoO₂–Graphite Lithium-Ion Batteries