Towards better Li metal anodes: Challenges and strategies

Zhang, Ying; Zuo, Tong‐Tong; Popović, Jelena; Lim, Kyungmi; Yin, Ya‐Xia; Maier, Joachim; Guo, Yu‐Guo

doi:10.1016/j.mattod.2019.09.018

Cited by 506 publications

(329 citation statements)

References 170 publications

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“…[ 6 ] The latest reviews present the persisting challenges and the current strategies toward the practical Li metal anodes. [ 7,8 ] Nonuniform Li‐ion flux emerged in the Li plating and stripping makes Li dendrites and dead Li easy to form. [ 9 ] The Li dendrites can penetrate the separator membrane and cause a short circuit, which possibly triggers fire and explosion.…”

Section: Figurementioning

confidence: 99%

Redistributing Li‐Ion Flux by Parallelly Aligned Holey Nanosheets for Dendrite‐Free Li Metal Anodes

et al. 2020

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Li metal is the most ideal anode material to assemble rechargeable batteries with high energy density. However, nonuniform Li‐ion flux during repeated Li plating and stripping leads to continuous Li dendrite growth and dead Li formation, which causes safety risks and short lifetime and thus impedes the commercialization of Li metal batteries. Here, parallelly aligned holey nanosheets on a Li metal anode are reported to simultaneously redistribute the Li‐ion flux in the electrolyte and in the solid‐electrolyte interphase, which allows uniform Li‐ion distribution as well as fast Li‐ion diffusion for reversible Li plating and stripping. With holey MgO nanosheets as an example, the protected Li anodes achieve Coulombic efficiency of ≈99% and ultralong‐term reversible Li plating/stripping over 2500 h at a high current density of 10 mA cm−2. A full‐cell battery, using the protected anode, a 4 V Li‐ion cathode, and a commercial carbonate electrolyte, shows capacity retention of 90.9% after 500 cycles.

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Section: Figurementioning

confidence: 99%

Redistributing Li‐Ion Flux by Parallelly Aligned Holey Nanosheets for Dendrite‐Free Li Metal Anodes

et al. 2020

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“…[6] Despite the significant improvements in energy density, the commercialization of advanced LMBs is severely limited due to their poor safety related to Li dendrite growth and the significant volume changes of "hostless" Li. [7][8][9][10] To overcome these obstacles, progress has been made through the optimization of organic electrolytes, [11][12][13] the creation of protective interface layers, [14][15][16] solid electrolyte exploration, [17][18][19] and 3D-designed hosts for Li metal. [20][21][22][23][24] 3D Li hosts effectively homogenize the Li-ion flux, regulate uniform Li nucleation and growth, stabilize Li/electrolyte interfaces, and prevent dimensional variation of the electrode due to their high specific surface area and porous structures.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Designing Stable Composite Lithium Anodes with Improved Wettability

2020

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Lithium (Li) is a promising battery anode because of its high theoretical capacity and low reduction potential, but safety hazards that arise from its continuous dendrite growth and huge volume changes limit its practical applications. Li can be hosted in a framework material to address these key issues, but methods to encage Li inside scaffolds remain challenging. The melt infusion of molten Li into substrates has attracted enormous attention in both academia and industry because it provides an industrially adoptable technology capable of fabricating composite Li anodes. In this review, the wetting mechanism driving the spread of liquefied Li toward a substrate is discussed. Following this, various strategies are proposed to engineer stable Li metal composite anodes that are suitable for liquid and solid-state electrolytes. A general conclusion and a perspective on the current limitations and possible future research directions for constructing composite Li anodes for high-energy lithium metal batteries are presented.

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“…Research on lithium metal batteries has achieved many gratifying results. [101][102][103] The current research on lithium metal batteries is mainly focused on controlling artificial SEI membranes with stable structures. COFs with a large surface area, an adjustable pore size, structural predictability and stability are potential materials for constructing artificial SEI membranes.…”

Section: Applications In Lithium-metal Batteriesmentioning

confidence: 99%

Covalent Organic Frameworks for Next‐Generation Batteries

2020

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the pore size and pore configuration and introducing functional groups into the framework through pre-synthesis and postsynthesis strategies, and these methods provide the possibility of obtaining high-performance organic electrode materials. In this review, the latest research progress and perspective on using COFs as electrode materials for next-generation batteries, including sodium-ion batteries, potassium-ion batteries, lithiumsulfur batteries, lithium-metal batteries, zinc-ion batteries, magnesium-ion batteries, and aluminum-ion batteries, are summarized. The relative energy-storage mechanism, advantages and challenges of COF electrodes, as well as the corresponding strategies used to achieve better electrochemical performances, are also presented.

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Towards better Li metal anodes: Challenges and strategies

Cited by 506 publications

References 170 publications

Redistributing Li‐Ion Flux by Parallelly Aligned Holey Nanosheets for Dendrite‐Free Li Metal Anodes

Redistributing Li‐Ion Flux by Parallelly Aligned Holey Nanosheets for Dendrite‐Free Li Metal Anodes

Recent Progress in Designing Stable Composite Lithium Anodes with Improved Wettability

Covalent Organic Frameworks for Next‐Generation Batteries

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