The role of mechanical pressure on dendritic surface toward stable lithium metal anode

Qin, Lei; Wang, Kehua; Xu, Hui; Zhou, Min; Yu, Genxi; Liu, Changfeng; Sun, ZhengMing; Chen, Jian

doi:10.1016/j.nanoen.2020.105098

Cited by 33 publications

(21 citation statements)

References 62 publications

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“…At times, concentrated pressure on one side of the cell may lead to damage to specific components. The optimum external pressure is 6 Mpa for a cell material with a Young's modulus between 0.6 and 2 GPA [239]. Regulating dendrites through pressure control works well in electrodes when the elastic modulus of the electrolyte is minimal.…”

Section: Control Of Pressure and Temperaturementioning

confidence: 99%

“…Regulating dendrites through pressure control works well in electrodes when the elastic modulus of the electrolyte is minimal. Chan et al used pressure to control the dimensions and shape of dendrites [239]. Pressure of 10 Mpa caused the reshaping of dendrites with smoother and flat edges, reducing the residual pores in a precycled lithium anode.…”

Section: Control Of Pressure and Temperaturementioning

confidence: 99%

See 1 more Smart Citation

Growth Mechanism of Micro/Nano Metal Dendrites and Cumulative Strategies for Countering Its Impacts in Metal Ion Batteries: A Review

et al. 2021

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Metal-ion batteries are capable of delivering high energy density with a longer lifespan. However, they are subject to several issues limiting their utilization. One critical impediment is the budding and extension of solid protuberances on the anodic surface, which hinders the cell functionalities. These protuberances expand continuously during the cyclic processes, extending through the separator sheath and leading to electrical shorting. The progression of a protrusion relies on a number of in situ and ex situ factors that can be evaluated theoretically through modeling or via laboratory experimentation. However, it is essential to identify the dynamics and mechanism of protrusion outgrowth. This review article explores recent advances in alleviating metal dendrites in battery systems, specifically alkali metals. In detail, we address the challenges associated with battery breakdown, including the underlying mechanism of dendrite generation and swelling. We discuss the feasible solutions to mitigate the dendrites, as well as their pros and cons, highlighting future research directions. It is of great importance to analyze dendrite suppression within a pragmatic framework with synergy in order to discover a unique solution to ensure the viability of present (Li) and future-generation batteries (Na and K) for commercial use.

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Section: Control Of Pressure and Temperaturementioning

confidence: 99%

Section: Control Of Pressure and Temperaturementioning

confidence: 99%

Growth Mechanism of Micro/Nano Metal Dendrites and Cumulative Strategies for Countering Its Impacts in Metal Ion Batteries: A Review

et al. 2021

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“…1−3 Unfortunately, its practical application has been hindered by uncontrolled dendrite growth and infinite volume fluctuation during the repeated Li plating/stripping that gives rise to an unstable solid electrolyte interface (SEI), unsatisfactory cycling stability, low Coulombic efficiency (CE), and even severe safety hazards. 4,5 In order to tackle the above intractable issues, considerable efforts have been made including regulating the electrolyte component and employing the artificial SEI film or coating the protective layer on the surface of lithium metal anodes (LMAs). 6−12 Although these strategies deter the formation of Li dendrites to some extent, the majority of these SEI-modified Li anodes with "hostless" feature can hardly withstand the aggressive metallic Li volume change during the long-term cycling processes, especially at high current density.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Metallic lithium (Li) is undoubtedly one of the landmark anode materials because it has a fascinating theoretical specific capacity of 3860 mA h g –1 and the lowest redox potential of −3.04 V (vs standard hydrogen electrode). − Unfortunately, its practical application has been hindered by uncontrolled dendrite growth and infinite volume fluctuation during the repeated Li plating/stripping that gives rise to an unstable solid electrolyte interface (SEI), unsatisfactory cycling stability, low Coulombic efficiency (CE), and even severe safety hazards. , …”

Section: Introductionmentioning

confidence: 99%

N-doped Porous Host with Lithiophilic Co Nanoparticles Implanted into 3D Carbon Nanotubes for Dendrite-Free Lithium Metal Anodes

Jiang

Diao

Xie

et al. 2021

ACS Appl. Energy Mater.

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Lithium (Li) metal is a promising anode material due to its high theoretical capacity (3860 mA h g–1) and lowest electrochemical potential. Nevertheless, the uncontrollable growth of Li dendrites and the infinite volume change during cycling restrict the practical applications of lithium metal batteries (LMBs). Herein, a dandelion-like host material, which is composed of a N-doped porous core with lithiophilic Co nanoparticles implanted into 3D carbon nanotubes (defined as Co@NPC), is developed to enable dendrite-free hybrid lithium metal anodes (HLMAs) even at high current density. The porous N-doped carbon polyhedron core inserted by lithiophilic Co nanoparticles provides high specific surface area and enriched nucleation sites to guide smooth lithium nucleation and deposition in the core with decreased nucleation barrier. Simultaneously, the nanochannel confinement effect of 3D carbon nanotubes inhibits the growth of dendrites and induces Li deposition into the internal space homogeneously. In virtue of the unique nanoarchitecture construction, the HLMA delivers superior Coulombic efficiency (98.3%) at a high current density of 5 mA cm–2 and exhibits ultralong lifespan (1000 cycles) with ultralow hysteresis voltage (31 mV) even at 10 mA cm–2. This work sheds light on designing and developing an advanced and scalable host for LMAs toward stable LMBs to be practical and feasible.

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“…[17] Thirumalraj et al [18] have found that the smoother surface of Cu foil has less nucleation sites in the Li deposition and less SEI fracture compared to the rougher surface of bare Cu foil. Qin et al [19] have found that preferential deposition/stripping of Li in the pores on the surface of the anode takes place. McMeeking et al [20] have found that high current density increases the electrode surface roughness during battery charging.…”

Section: Introductionmentioning

confidence: 99%

Effects of Optimized Electrode Surface Roughness and Solid Electrolyte Interphase on Lithium Dendrite Growth

Gao

Guo

2021

Energy Tech

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Lithium metal is an ideal anode material for high‐energy‐density rechargeable batteries. However, harmful dendrites lead to short circuit and cause safety hazards. Herein, a fundamental study on increasing the roughness of the electrode and its influence on the behaviors of lithium dendrites by combining experiment and simulation is presented. Various aspects of the growth behaviors of lithium dendrite on the electrode surface are investigated with consideration of the overpotential, roughness, and the solid electrolyte interphase (SEI). In situ observation of experimental results show that the electrode surface becomes rough gradually during the charging process, and the rough electrode surface promotes the formation of disordered dendrites. The simulation results also show that it is easy to form dendrites on the surface of electrodes with higher roughness. Higher overpotential leads to uneven deposition of reduced lithium and promotes the formation of lithium dendrites. A thicker SEI and lower conductivity can effectively slow down the growth of dendrites. Herein, the overpotential, protuberance, and SEI are preliminarily designed to suppress the growth of dendrites effectively. These results supply useful information for the optimal design of electrode surface patterns and an artificial SEI.

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The role of mechanical pressure on dendritic surface toward stable lithium metal anode

Cited by 33 publications

References 62 publications

Growth Mechanism of Micro/Nano Metal Dendrites and Cumulative Strategies for Countering Its Impacts in Metal Ion Batteries: A Review

Growth Mechanism of Micro/Nano Metal Dendrites and Cumulative Strategies for Countering Its Impacts in Metal Ion Batteries: A Review

N-doped Porous Host with Lithiophilic Co Nanoparticles Implanted into 3D Carbon Nanotubes for Dendrite-Free Lithium Metal Anodes

Effects of Optimized Electrode Surface Roughness and Solid Electrolyte Interphase on Lithium Dendrite Growth

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