Lithium electrode cycleability and morphology dependence on current density

Arakawa, Masayasu; Tobishima, Shin‐ichi; Nemoto, Yasue; Ichimura, M.; Yamaki, Jun‐ichi

doi:10.1016/0378-7753(93)80099-b

Cited by 145 publications

(105 citation statements)

References 5 publications

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“…The occurrence of similar pit-like holes on the surface of cycled lithium electrodes has previously been identified using electron microscopy 13,[32][33][34] . It was found that pit morphology and growth rate along the metallic Li electrode surfaces can be a function of electrolyte composition and applied current density.…”

Section: Resultsmentioning

confidence: 99%

Investigating the evolving microstructure of lithium metal electrodes in 3D using X-ray computed tomography

Taiwo

Finegan

Paz‐Garcia

et al. 2017

Phys. Chem. Chem. Phys.

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The growth of electrodeposited lithium microstructures on metallic lithium electrodes has prevented their use in rechargeable lithium batteries due to early performance degradation and safety implications. Understanding the evolution of lithium microstructures during battery operation is crucial for the development of an effective and safe rechargeable lithium-metal battery. This study employs both synchrotron and laboratory X-ray computed tomography to investigate the morphological evolution of the surface of metallic lithium electrodes during a single cell discharge and over numerous cycles, respectively. The formation of surface pits and the growth of mossy lithium deposits through the separator layer are characterised in threedimensions. This has provided insight into the microstructural evolution of lithium--metal electrodes during rechargeable battery operation, and further understanding of the importance of separator architecture in mitigating lithium dendrite growth.

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Section: Resultsmentioning

confidence: 99%

Investigating the evolving microstructure of lithium metal electrodes in 3D using X-ray computed tomography

Taiwo

Finegan

Paz‐Garcia

et al. 2017

Phys. Chem. Chem. Phys.

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“…20,[43][44][45] The preceding analysis suggests that thinner i.e., higher curvature necks are produced in the later stages of extended charging cycles, thereby increasing the probability of DLC detachment during discharge. 5,25,30,46,47 The fact that DLCs appear preferentially at longer charging times implies that the root segments (necks) of the dendrite structures produced in later stages are thinner and/or longer. 33 Thinner longer 'necks' have a larger positive (convex) curvature radius, r convex , about their cross sections, and a smaller negative (concave) curvature radius, r concave , about their columns.…”

Section: Discussionmentioning

confidence: 99%

“…DLCs represent an irreversible loss of battery capacity. 4,5 This drawback not only compromises the reliability but ultimately decreases the capacity of Li 0 batteries. 2,[6][7][8][9][10] Work on dendrite growth has mainly focused on the effects of charging protocol, 11,12 current density, 13,14 electrode surface morphology, 15,16 temperature, 17,18 solvent and electrolyte chemical composition, [19][20][21] electrolyte concentration 22,23 and evolution time 24,25 on dendrite growth.…”

Section: Introductionmentioning

confidence: 99%

“…14,[28][29][30][31][32] We view DLC formation as a manifestation of the intrinsic sponginess of Li 0 electrodeposits, 33 and the non-uniform dissolution rates of such deposits upon discharge. 5,34,35 In this paper, we report experimental results on the effect of the duration of the charging period t on the amount of DLCs produced at constant charge. DLC quantification is based on rigorous counting based on the computer analysis of the digitalized images of electrodeposits produced in scaled-up coin cells of our own design.…”

Section: Introductionmentioning

confidence: 99%

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Quantifying the dependence of dead lithium losses on the cycling period in lithium metal batteries

Aryanfar

Brooks

Colussi

et al. 2014

Phys. Chem. Chem. Phys.

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We quantify the effects of the duration of the charge-discharge cycling period on the irreversible loss of anode material in rechargeable lithium metal batteries. We have developed a unique quantification method for the amount of dead lithium crystals (DLCs) produced by sequences of galvanostatic charge-discharge periods of variable duration t in a coin battery of novel design. We found that the cumulative amount of dead lithium lost after 144 Coulombs circulated through the battery decreases sevenfold as t shortens from 16 to 2 hours. We ascribe this outcome to the faster electrodissolution of the thinner dendrite necks formed in the later stages of long charging periods. This phenomenon is associated with the increased inaccessibility of the inner voids of the peripheral, late generation dendritic structures to incoming Li + .

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“…Most metal electrodes showed dendritic growth of the electrodeposited metal as the current density approaches the limiting current density, which indicates that the electrodeposition morphology strongly depends on the current distribution on the electrode. [9] M. Arakawa et al [10] and M. Z. Mayers et al [11] successfully demonstrated that the amount of needle-like Li increased significantly when the deposition current density increased.…”

Section: Lithium Metal Anodementioning

confidence: 99%

Li‐Ion Batteries and Beyond: Future Design Challenges

Hwa

Cairns

2015

Encyclopedia of Inorganic and Bioinorganic Chemistry

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Light metals have been widely used as electrode materials for batteries owing to their low standard redox potential, their low equivalent weight, large specific capacity, and great abundance. Both primary and secondary cells including light metals as electrode material have influenced all aspects of our lives, e.g., electrically operated toys, power tools, and portable electronics such as cell phones, smart pads, and laptop computers. Among all battery systems, rechargeable lithium (Li) ion cells have been used most widely in recent years owing to their high specific power, high energy density, and ambient temperature operation. However, Li‐ion cells are facing difficult challenges in satisfying the emerging market for advanced applications demanding high‐performance rechargeable batteries for applications such as electric vehicles, high‐performance portable electronics, and large‐scale electrical energy storage systems. Unfortunately, current Li‐ion cells cannot satisfy demands such as low cost, much improved safety, larger energy density, faster charge/discharge rates, and longer service life, so intensive effort is necessary to develop the next generation of cells. In this article, the limitations of current Li‐ion cells and various advanced materials for each component of the Li‐ion cell, in addition to other promising candidates for cells beyond Li ion, such as the Li/S cell and Na‐ and Mg‐based rechargeable cells, and metal/air cells are discussed.

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Lithium electrode cycleability and morphology dependence on current density

Cited by 145 publications

References 5 publications

Investigating the evolving microstructure of lithium metal electrodes in 3D using X-ray computed tomography

Investigating the evolving microstructure of lithium metal electrodes in 3D using X-ray computed tomography

Quantifying the dependence of dead lithium losses on the cycling period in lithium metal batteries

Li‐Ion Batteries and Beyond: Future Design Challenges

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