Grain refining mechanisms: Initial levelling stage during nucleation for high-stability lithium anodes

Dong, Jing; Dai, Hongliu; Fan, Qifeng; Lai, Chao; Zhang, Shanqing

doi:10.1016/j.nanoen.2019.104128

Cited by 68 publications

(48 citation statements)

References 28 publications

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“…Up to now, various strategies have been explored to address these issues such as optimizing electrolyte composition, [ 10,11 ] employing solid‐state electrolytes, [ 12,13 ] constructing an artificial SEI, [ 14,15 ] designing 3D materials [ 16–18 ] and Li‐based alloy. [ 19,20 ] Among the above strategies, SEI plays a significant role in determining the performance of LMBs due to the reason that the stable SEI can reduce the side reaction and repress the formation of Li dendrites.…”

Section: Introductionmentioning

confidence: 99%

Electrolytes Enriched by Crown Ethers for Lithium Metal Batteries

Wang

Liu

et al. 2020

Adv Funct Materials

127

101

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Lithium (Li) metal battery is considered the most promising next‐generation battery due to its low potential and high theoretical capacity. However, Li dendrite growth causes serious safety problems. Herein, the 15‐Crown‐5 (15‐C‐5) is reported as an electrolyte additive based on solvation shell regulation. The strong complex effect between Li+ ion and 15‐C‐5 can reduce the concentration of Li ions on the electrode surface, thus changing the nucleation, and repressing the growth of Li dendrites in the plating process. Significantly, the strong coordination of Li+/15‐C‐5 would be able to make them aggregate around the Li crystal surface, which could form a protective layer and favor the formation of a smooth and dense solid electrolyte interphase with high toughness and Li+ ion conductivity. Therefore, the electrolyte system with 2.0 wt% 15‐C‐5 achieves excellent electrochemical performance with 170 cycles at 1.0 mA cm−2 with capacity of 0.5 mA h cm−2 in symmetric Li|Li cells. The obviously enhanced cycle and rate performance are also achieved in Li|LiNi0.6Co0.2Mn0.2O2 (NCM622) full cells. The 15‐C‐5 demonstrates to be a promising additive for the electrolytes toward safe and efficient Li metal batteries.

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Section: Introductionmentioning

confidence: 99%

Electrolytes Enriched by Crown Ethers for Lithium Metal Batteries

Wang

Liu

et al. 2020

Adv Funct Materials

127

101

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“…However, practical applications of Li-metal anodes are plagued by dendrite-induced shorting-circuiting, causing a battery failure and fire or even explosion [7][8][9][10][11][12][13]. In addition, the options for liquid electrolyte for LMBs further increase safety risks due to the flammability of the organic solvents and their toxicity [14][15][16][17][18][19][20]. Solid polymer electrolytes (SPEs) are promising candidates to replace liquid electrolytes due to their low flammability, easy processability, mechanical flexibility, and good interfacial compatibility [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

In-situ construction of a Mg-modified interface to guide uniform lithium deposition for stable all-solid-state batteries

Liu

Zheng

et al. 2021

Journal of Energy Chemistry

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“…The introduction of additives is a prevailing strategy of electrolyte optimization to achieve stable interface between Li metal anode and electrolyte, which is summarized in Table 1. Dong et al 56 used 5% hexafluoroacetylacetone (HFAA) as an electrolyte additive to regulate Li deposition. The HFAA coordinated with Li ion to form complexes will increase the electrode polarization and hinder individual crystals growth, resulting in the formation of a large number of nucleation sites.…”

Section: Interfacial Instability Between Electrode and Electrolyte: Pmentioning

confidence: 99%

Interface issues of lithium metal anode for high‐energy batteries: Challenges, strategies, and perspectives

Han

Liu

Xiao

et al. 2021

InfoMat

231

126

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Lithium (Li) metal is considered as one of the most promising anode materials for next‐generation high‐energy‐density storage systems. However, the practical application of Li metal anode is hindered by interfacial instability and air instability due to the highly reactivity of Li metal. Unstable interface in Li metal batteries (LMBs) directly dictates Li dendrite growth, “dead Li” and low Coulombic efficiency, resulting in inferior electrochemical performance of LMBs and even safety issues. In addition, its sensitivity to ambient air leads to the severe corrosion of Li metal anode, high requirements of production and storage, and increased manufacturing cost. Plenty of efforts in recent years have overcome many bottlenecks in these fields and hastened the practical applications of high‐energy‐density LMBs. In this review, we focus on emerging methods of these two aspects to fulfill a stable and low cost electrode. In this perspective, design artificial solid electrolyte interphase (SEI) layers, construct three‐dimensional conductive current collectors, optimize electrolytes, employ solid‐state electrolytes, and modify separators are summarized to be propitious to ameliorate interfacial stability. Meanwhile, ex situ/in situ formed protective layers are highlighted in favor of heightening air stability. Finally, several possible directions for the future research on advanced Li metal anode are addressed.

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Grain refining mechanisms: Initial levelling stage during nucleation for high-stability lithium anodes

Cited by 68 publications

References 28 publications

Electrolytes Enriched by Crown Ethers for Lithium Metal Batteries

Electrolytes Enriched by Crown Ethers for Lithium Metal Batteries

In-situ construction of a Mg-modified interface to guide uniform lithium deposition for stable all-solid-state batteries

Interface issues of lithium metal anode for high‐energy batteries: Challenges, strategies, and perspectives

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