Stabilizing electrodeposition in elastic solid electrolytes containing immobilized anions

Tikekar, Mukul; Archer, Lynden A.; Koch, Donald L.

doi:10.1126/sciadv.1600320

Cited by 247 publications

(204 citation statements)

References 45 publications

(108 reference statements)

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“…These performance improvements were mainly attributed to the uniformly distributed lithium ions near the electrode surface induced by such non‐conductive micro/nanostructure with polar functional groups 70. The use of micro/nanostructured electrolyte in which anions are well fixed by SiO 2 /Al 2 O 3 nanoparticles while Li ion can be uneven diffuse and deposit on the Li metal anode,71, 72, 73, 74 which is another effective route to retard the formation of Li dendrites.…”

Section: Non‐conductive Micro/nanostructured Frameworkmentioning

confidence: 99%

Advanced Micro/Nanostructures for Lithium Metal Anodes

et al. 2017

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Owning to their very high theoretical capacity, lithium metal anodes are expected to fuel the extensive practical applications in portable electronics and electric vehicles. However, unstable solid electrolyte interphase and lithium dendrite growth during lithium plating/stripping induce poor safety, low Coulombic efficiency, and short span life of lithium metal batteries. Lately, varies of micro/nanostructured lithium metal anodes are proposed to address these issues in lithium metal batteries. With the unique surface, pore, and connecting structures of different nanomaterials, lithium plating/stripping processes have been regulated. Thus the electrochemical properties and lithium morphologies have been significantly improved. These micro/nanostructured lithium metal anodes shed new light on the future applications for lithium metal batteries.

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Section: Non‐conductive Micro/nanostructured Frameworkmentioning

confidence: 99%

Advanced Micro/Nanostructures for Lithium Metal Anodes

et al. 2017

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“…[34,35] Sluggish Li + transport will result in a sharp concentration gradient on the surface of electrode and thus leading to an uneven distributed charge and current fields, exacerbating the proliferation of undesirable Li dendrites. The growth rate of Li dendrite is essentially determined by the Li + transport rate and pathways.…”

Section: Force Engineering In LI + Transport Processmentioning

confidence: 99%

Eliminating Dendrites through Dynamically Engineering the Forces Applied during Li Deposition for Stable Lithium Metal Anodes

Ren

Wang

Zhang

et al. 2019

Advanced Energy Materials

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intercalation reaction mechanism of commercialized graphite anodes, the energy density of LIBs is nearly approaching its theoretical limits (350 Wh kg −1 ). [2,3] More advanced alternative electrodes are urgently needed to satisfy the growing demand for portable electronics and electric vehicles. [4] With the ultrahigh theoretical specific capacity (3860 mAh g −1 ) and lowest electrochemical potential (−3.040 V vs standard hydrogen electrode), lithium (Li) metal is considered as the most desirable anode for next-generation high energy-storage applications, [5][6][7] including rechargeable Li-S [8][9][10] and Li-O 2 batteries. [11,12] Nevertheless, challenges still remained and the following issues are still urgently needed to be settled: 1) the intrinsic high reactivity of Li metal accelerates the corrosive side reactions between Li and electrolyte, leading to low Coulombic efficiency and Li anode degradation. [1,13] 2) Infinite volume fluctuation of Li anodes brings serious damage to the fragile solid electrolyte interphase (SEI), and causes unstable Li anode/liquid electrolyte interface during Li plating/stripping. [5,14] 3) The uncontrollable Li dendrite growth impales the separator, resulting in catastrophic combustion and explosion. [15] To effectively address the aforementioned problems, numerous strategies have been proposed, including structured anode design, [16][17][18][19] in/ex-situ artificial SEI protective layer, [20,21] functional electrolyte additives, [22,23] and solid/quasisolid-state electrolytes. [24][25][26][27] Specifically, structured anode can manipulate the electric field redistribution on Li surface, decrease the local current density and accommodate large volume fluctuation during cycling, while the unwell protected large surface area would lead to more serious parasite reactions. Alternatively, the artificial protective layer and functional additives could enhance the plating quality by modifying the SEI composition, but the severe anode volume change and inevitable additive consumption always leads to failure in long cycling operation, especially under high current density. The solid/quasi-solid-state electrolyte is considered to be a relatively safe way to replace the traditional flammable liquid electrolyte. However, the high electrolyte/electrode interface resistance and low ionic conductivity at room temperature are still hard to be resolved. Therefore, though all these strategies have made great progress, further improvements are Lithium metal anodes are considered the most promising anode for nextgeneration high-energy-density batteries due to their high theoretical capacity and low electrochemical potential. However, intractable barriers, especially the notorious dendrite growth, severe volume expansion, and side reactions, have obstructed its large-scale application. Numerous strategies from different points of view are explored to surmount these obstacles. Within these efforts, dynamically engineering the forces applied during the electrochemical process plays a significant r...

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“…However, rechargeable Li metal batteries are suffering from limited cycle life, low cycling efficiency, and severe safety concerns resulting from sharp Li dendrites and electrolyte degradation ( 2 – 4 ). Research to solve these challenging issues originated decades ago and has had a renaissance recently due to the rapid developments of Li-sulfur and Li-oxygen batteries with high theoretical energy densities ( 5 ).…”

Section: Introductionmentioning

confidence: 99%