Comparative study of thermal behaviors of various lithium-ion cells

Saito, Yoshiyasu; Takano, Kiyonami; Kanari, Katsuhiko; Negishi, Akira; Nozaki, Ken; Kato, Ken

doi:10.1016/s0378-7753(01)00702-9

Cited by 51 publications

(38 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite the overall similarity of the setups and techniques used in latter reports, there are some discrepancies between the staging models, especially at the complicated carbon-rich edge. Further in-situ Xray diffraction studies of lithium intercalation in graphite have been made, 6,7 but no additional features to the previously reported ones have been found.…”

mentioning

confidence: 79%

Lithium Intercalation into Graphitic Carbons Revisited: Experimental Evidence for Twisted Bilayer Behavior

Senyshyn

Dolotko

Mühlbauer

et al. 2013

J. Electrochem. Soc.

116

118

View full text Add to dashboard Cite

The crystal structure of the 18650-type Li-ion cell constituents has been studied at ambient temperature by high-resolution neutron powder diffraction at different states of charge. The structure evolution occurring on the anode (graphite) site as a function of the cell state has been accurately monitored by simultaneous electrochemical measurements and powder diffraction. A set of 128 neutron powder diffraction patterns each over a 2θ angular range of 0.95 • -160 • has been collected during slow cell discharge/charge in a high-resolution mode. Severe deviations from the previously reported details of Li-intercalation into graphite have been observed, such as: structural evolution of the intercalated carbons depending either on charge or discharge; pronounced dependence of the interatomic spacings for the higher ordered Li x C 6 (incl. previously unknown ones). Instead of higher stages of Li-intercalation in the region of low Li-contents, which would have been observed by Bragg reflections at low 2θ angles, a modulation within the ab-planes is proposed, which is correlated between neighboured graphene layers and changes in dependence of the Li-content. On the basis of these results the phase diagram for lithium-intercalated carbons has been reconsidered and the alternative ordering model for the Li x C 6 (x < 0.5) has been proposed.Due to the rapid progress in the field of portable electronics and electric vehicles there is an increasing demand for smaller size, larger capacity, lighter weight and lower priced rechargeable batteries. Nowadays the Li-ion batteries are considered as the predominant cell technology due to their high voltage, high energy, good cycle life and excellent storage characteristics. However, despite their overall advantages, Li-ion cells have some drawbacks, which cannot be overcome and require systematic and detailed research, e.g. on issues concerning safety, stability of electrode materials, capacity improvements etc. The structural behavior of the electrode materials, its response on the Li intercalation/extraction as well as the information about transformations and their kinetics, is the key to address the issues mentioned above.In contrast to different kinds of commercially available cathode materials, graphite is nowadays the most often employed anode material in lithium ion batteries. Its general feature is the formation of a periodic arrangement of lithium containing and unoccupied layers in the a-b plane of the hexagonal graphite lattice during intercalation. [1][2][3] The knowledge about phase relationship in the lithium-carbon binary system is primarily based on reports by Dahn 4 and Ohzuku et al., 5 where X-ray powder diffraction along with electrochemical measurements have been used to characterize lithium-intercalated graphites. Despite the overall similarity of the setups and techniques used in latter reports, there are some discrepancies between the staging models, especially at the complicated carbon-rich edge. Further in-situ Xray diffraction studies of lithium intercala...

show abstract

mentioning

confidence: 79%

Lithium Intercalation into Graphitic Carbons Revisited: Experimental Evidence for Twisted Bilayer Behavior

Senyshyn

Dolotko

Mühlbauer

et al. 2013

J. Electrochem. Soc.

116

118

View full text Add to dashboard Cite

show abstract

“…However, because no investigations actually report the heat rate on a volume basis, cross-study comparison requires significant manipulation of the reported data. This includes estimating the heat rate from the total cell volume, [54][55][56][59][60][61][62][63][64][65][66][67][68]70 from the thickness of the unit cell 49 or the entire battery, 69 or from standard densities of full cells. 57,58 Unfortunately, these assumptions can greatly influence the estimated volumetric heat generation rate.…”

Section: R8mentioning

confidence: 99%

A Critical Review of Thermal Issues in Lithium-Ion Batteries

Bandhauer

Garimella

Fuller

2011

J. Electrochem. Soc.

1,652

915

View full text Add to dashboard Cite

Lithium-ion batteries are well-suited for fully electric and hybrid electric vehicles due to their high specific energy and energy density relative to other rechargeable cell chemistries. However, these batteries have not been widely deployed commercially in these vehicles yet due to safety, cost, and poor low temperature performance, which are all challenges related to battery thermal management. In this paper, a critical review of the available literature on the major thermal issues for lithium-ion batteries is presented. Specific attention is paid to the effects of temperature and thermal management on capacity/power fade, thermal runaway, and pack electrical imbalance and to the performance of lithium-ion cells at cold temperatures. Furthermore, insights gained from previous experimental and modeling investigations are elucidated. These include the need for more accurate heat generation measurements, improved modeling of the heat generation rate, and clarity in the relative magnitudes of the various thermal effects observed at high charge and discharge rates seen in electric vehicle applications. From an analysis of the literature, the requirements for lithium-ion thermal management systems for optimal performance in these applications are suggested, and it is clear that no existing thermal management strategy or technology meets all these requirements. Thomas-Alyea (kethomas@alumni.princeton.edu) and Kandler Smith (kandler.smith@gmail.com). This article was reviewed by KarenElectric and hybrid electric vehicles ͑EV and HEV͒ may present the best near-term solution for the transportation sector to reduce our dependence on petroleum and to reduce emissions of greenhouse gases and criteria pollutants. Rechargeable lithium-ion batteries are well-suited for these vehicles because they have, among other things, high specific energy and energy density relative to other cell chemistries. For example, practical nickel-metal hydride ͑NiMH͒ batteries, which have dominated the HEV market, have a nominal specific energy and energy density of 75 Wh/kg and 240 Wh/L, respectively. In contrast, lithium-ion batteries can achieve 150 Wh/kg and 400 Wh/L, 1 i.e., nearly 2 times the specific energy and energy density.Whereas lithium-ion batteries are rapidly displacing NiMH and nickel-cadmium secondary batteries for portable and hand-held devices, they have not yet been widely introduced in automotive products. The main barriers to the deployment of large fleets of vehicles on public roads equipped with lithium-ion batteries continue to be safety, cost ͑related to cycle and calendar life͒, and low temperature performance 2 -all challenges that are coupled to thermal effects in the battery. Since the recent introduction of HEV fleets, the industry trend is toward larger batteries required for plug-in hybrids, extended-range hybrids, and all-electric vehicles. These larger battery designs impose greater pressure to lower costs and improve safety.Furthermore, most of the research on these types of batteries has been related to fin...

show abstract

“…2,9 Though not being developed by the authors, this approach is described in the end of this section because it is necessary to estimate heat generation. On the other hand, regarding heat generation Q s due to entropy change, both the simple and detailed methods share an approach adopted in many previous studies.…”

Section: Heat Generation Factors In Lithium-ion Batteriesmentioning

confidence: 99%

“…On the other hand, regarding heat generation Q s due to entropy change, both the simple and detailed methods share an approach adopted in many previous studies. 2,9 Though not being developed by the authors, this approach is described in the end of this section because it is necessary to estimate heat generation.…”

Section: Heat Generation Factors In Lithium-ion Batteriesmentioning

confidence: 99%

Detailed Estimation Method of Heat Generation During Charge/Discharge in Lithium-Ion Battery Using Equivalent Circuit

2019

View full text Add to dashboard Cite

Lithium-ion batteries are becoming practically used for high power applications such as electric vehicles. For this purpose, some estimation technique of battery heat generation is inevitable. The authors, therefore, have already proposed a simple estimation method of the heat generation in lithium-ion batteries during their charge/discharge using internal equivalent resistance and confirmed validity of the method for constant current discharge patterns. The merit of this method is its simplicity but it has already been made clear that its versatility for various current patterns is not enough. Considering these facts, in this study, the authors newly proposed a detailed estimation method of the heat generation in lithium-ion batteries during their charge/discharge using equivalent circuit. The authors compared the estimation results of the heat generation in lithium-ion battery for various constant or pulse current charge/discharge patterns through the newly proposed detailed estimation method with the estimation results through the conventional simple estimation method and measured results through a calorimeter for the corresponding current patterns. The versatility of the newly proposed detailed estimation method was successfully confirmed through these comparisons, indicating the validity and necessity of the proposed method. K E Y W O R D Scalorimeter, entropy change, equivalent circuit, estimation method of heat generation, lithium-ion battery

show abstract

Comparative study of thermal behaviors of various lithium-ion cells

Cited by 51 publications

References 9 publications

Lithium Intercalation into Graphitic Carbons Revisited: Experimental Evidence for Twisted Bilayer Behavior

Lithium Intercalation into Graphitic Carbons Revisited: Experimental Evidence for Twisted Bilayer Behavior

A Critical Review of Thermal Issues in Lithium-Ion Batteries

Detailed Estimation Method of Heat Generation During Charge/Discharge in Lithium-Ion Battery Using Equivalent Circuit

Contact Info

Product

Resources

About