In Operando Detection of the Onset and Mapping of Lithium Plating Regimes during Fast Charging of Lithium-Ion Batteries

Fear, Conner; Adhikary, Tanay; Carter, Rachel; Mistry, Aashutosh; Love, Corey T.; Mukherjee, Partha P.

doi:10.1021/acsami.0c07803

Cited by 77 publications

(48 citation statements)

References 58 publications

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“…The onset of Li plating has been correlated with the local minimum in the electrode potential during fast charging. [62] Because Li plating can only occur when the electrode potential drops below 0 V versus Li/Li + , a more gradual potential drop during fast charging will delay the onset of Li plating. [9] Thus, the more gradual voltage drop and lack of a local voltage minimum observed in the LBCO electrode are consistent with the suppression of Li plating.…”

Section: Delayed Nucleation Of LI Platingmentioning

confidence: 99%

Enabling 4C Fast Charging of Lithium‐Ion Batteries by Coating Graphite with a Solid‐State Electrolyte

Kazyak

Chen

et al. 2021

Advanced Energy Materials

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out on the graphite anode surface under fast-charging conditions in high-energydensity cells. The irreversibility associated with Li plating leads to permanent loss of Li from the accessible reservoir and capacity fade, which is the key challenge that limits fast-charging of LIBs.Strategies to prevent and/or mitigate the impacts of Li plating on graphite have drawn great interest in recent years, including: 1) alternative anode materials such as lithium titanate, [6] titanium niobate, [7] and hybrid mixtures of hard carbon with graphite; [5] 2) modifying the electrode architecture to facilitate enhanced mass transport; [8][9][10][11][12] 3) asymmetric temperature modulation; [13] 4) surface coatings to modify interface behavior; [14][15][16][17] and 5) electrolyte modifications to increase

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Section: Delayed Nucleation Of LI Platingmentioning

confidence: 99%

Enabling 4C Fast Charging of Lithium‐Ion Batteries by Coating Graphite with a Solid‐State Electrolyte

Kazyak

Chen

et al. 2021

Advanced Energy Materials

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“…investigated the effects of high C‐rate on the lithium plating on graphite electrode. [ 89 ] Irreversible lithium plating lowered the anode potential, which leads to rapid performance degradation.…”

Section: Optical Microscopy Studies Of Lithium Batteriesmentioning

confidence: 99%

Seeing is Believing: In Situ/Operando Optical Microscopy for Probing Electrochemical Energy Systems

Chen

Zhang

Xuan

et al. 2020

Adv Materials Technologies

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Understanding the mechanisms and fundamentals inside the EESs are critical to improve their performances by boosting the favorable processes and suppressing the detrimental ones. Various ex situ techniques have been used for studying EESs, which provide valuable spatial and temporal information. [6-8] Nevertheless, ex situ methods are limited by the time delay and potential impacts during the operation of removing samples from their initial environments to characterization locations. [9] The results might sometimes be missing or even misleading. This elicits the requirement for in situ/operando methods to conduct real-time observations on reactions and processes inside a system. In situ analytical techniques can provide more realistic information on the ongoing chemical and physical processes in an electrochemical cell. [10] Furthermore, correlating in situ information with electrochemical results obtained synchronously from the same device enables to build a direct cause-and-effect relationship, leading to authentic conclusions. [11] Remarkable progress has been made with advanced characterization techniques including optical, [12] X-ray, [13] electron microscopy, [14] neutron techniques. [15] The techniques work on very different principles. Optical microscopy is based on transmitting light to construct images for the samples. It has a wide effective characterization scales from centimeter to lower than micrometer. X-ray characterization techniques utilize electromagnetic radiation to magnify the samples. X-ray methods, including diffraction, absorption spectroscopy, photoelectron spectroscopy and X-ray microscopy, provide crucial information from mesoscale morphology to microscale crystal structure and elemental content of electrode materials. [16] Electron micro scopy probes the samples with electron beams. [17] The techniques based on neutron are quite similar as electron, and neutrons are preferable for analyses of light elements such as lithium ion (Li +). Also, Neutrons can go in more penetration depth with a weaker interaction with matter. [18] With the employment of these techniques, the knowledge of mechanisms of EESs has been significantly enhanced. On the other hand, in situ/operando experiments are restricted under certain circumstances, as they generally require special designs and modifications of the unit structures. Compared with other techniques, optical microscopy is preferable for in situ/operando studies considering the basic equipment needed, nonvacuum manipulation, easy access and operation, as well as its nondestructive nature. [19] However, inspections based on optical microscopy require access within the systems for transmitting light. This review discusses a range of in situ/operando techniques based on optical microscopy reported in literatures for studying electrochemical energy systems. Compared to other techniques (scanning probe microscopy, electron microscopy, X-ray microscopy), optical microscopy offers many advantages including the simplicity of the instrument and operation, co...

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“…Other researchers have explored the effect of temperature on lithium plating and shown that elevated temperature significantly reduces lithium plating. [16,17] Modeling-based articles have shown an increase in anode porosity should also significantly reduce plating. [18] However, our comprehensive approach of experimental measurements and electrochemical/microstructure modeling shows lithium plating is not a strong function of anode porosity.…”

Section: Introductionmentioning

confidence: 99%

Effect of Anode Porosity and Temperature on the Performance and Lithium Plating During Fast‐Charging of Lithium‐Ion Cells

et al. 2020

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Twenty-four single-layer %32 mAh pouch cells are tested to determine the effect of electrode porosity on lithium plating. Twelve cells contain a graphite electrode that is 26% porous, and 47% for the other twelve. The cells are cycled using a 6-C charge and a C/2 discharge protocol at temperatures in the range of 20-50 C. A macro-homogeneous electrochemical model and microstructure analysis tool set are used to help interpret experimental observations for the effect of anode porosity and ambient temperature on fast-charging performance. Comparison between the two also highlights gaps in current theoretical understanding that need to be addressed. In post-test examination, lithium plating is seen in all cells, regardless of porosity. Elevated temperature is shown to reduce the amount of lithium plating and improve initial fast-charge capacity, but also changes the rate of other, less well-understood degradation mechanisms. Apparent kinetic rate laws, At þ Bt 1/2 , where A and B are constants, can be fit to most of the capacity loss and resistance increase data. The relative magnitudes of A and B change with temperature and porosity. The capacity loss data at 50 C from the high-porosity cells are fit by a logistics rate law.

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In Operando Detection of the Onset and Mapping of Lithium Plating Regimes during Fast Charging of Lithium-Ion Batteries

Cited by 77 publications

References 58 publications

Enabling 4C Fast Charging of Lithium‐Ion Batteries by Coating Graphite with a Solid‐State Electrolyte

Enabling 4C Fast Charging of Lithium‐Ion Batteries by Coating Graphite with a Solid‐State Electrolyte

Seeing is Believing: In Situ/Operando Optical Microscopy for Probing Electrochemical Energy Systems

Effect of Anode Porosity and Temperature on the Performance and Lithium Plating During Fast‐Charging of Lithium‐Ion Cells

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