Functional mechanism analysis and customized structure design of interlayers for high performance Li-S battery

Deng, Nanping; Liu, Yong; Li, Quanxiang; Yan, Jing; Lei, Weiwei; Wang, Gang; Wang, Liyuan; Liang, Yueyao; Kang, Weimin; Cheng, Bowen

doi:10.1016/j.ensm.2019.04.042

Cited by 102 publications

(44 citation statements)

References 305 publications

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“…Metal sulfides, containing ionic bonding, contribute to forming robust chemical bonds with polysulfide and afford more ionic passageways. Besides, the features of their native defects cooperating with chemically active surfaces are helpful to enhance the conductivity of the electron transport (Deng et al, 2019). Ghazi et al (Ghazi et al, 2017) prepared a MoS 2 / Celgard separator as an efficient polysulfide barrier for LSBs ( Figures 4A,B).…”

Section: Functional Separators Facing Cathode With Chemical Adsorptiomentioning

confidence: 99%

“…The physically/chemically-adsorptive materials only play a low effective role for the efficient utilization of polysulfide. Notably, the weak contact between the sulfur cathode and polysulfides resulting from the dissolution of the polysulfides into liquid electrolytes normally leads to more sluggish reaction kinetics of S 8 to Li 2 S (Deng et al, 2019). And the "dead sulfur" will continue to cover the surface of the cathode, causing the loss of sulfur.…”

Section: Functional Separators Facing Cathode With Catalytic Conversimentioning

confidence: 99%

“…To overcome this problem, the majority of researchers put forward unique architecture designs to induce the uniform growth of Li for restraining Li dendrites. These special structures provide abundant and ordered space so that they have a strong "magnet force" to induce Li growth, which significantly enhances the safety of LSBs (Deng et al, 2019). In this context, Li ions smoothly and uniformly pass across the modified separator and transfer to the Li anode without the intervention of anions so that a dendrite-free Li anode is achieved.…”

Section: Functional Separators Facing Anode With Induced Lithium Growmentioning

confidence: 99%

“…Recently, nanoparticle or nanolayer-based materials have become in inhibiting the dendritic Li growth by controlling lithium nucleation (Deng et al, 2019). The nanoparticles in FSFA act as heterogeneous nucleation sites of Li by decreasing the Gibbs free energy of Li electrodeposition, which makes Li preferentially deposit on these nanoparticles to form regular Li crystal seeds in the early plating stage.…”

Section: Functional Separators Facing Anode With Nucleation Regulatiomentioning

confidence: 99%

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Functionally Modified Polyolefin-Based Separators for Lithium-Sulfur Batteries: Progress and Prospects

Xiao

Chen

et al. 2020

Front. Energy Res.

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The ever-growing demand for portable devices and electric vehicles are drawing widespread attention to advanced energy storage systems. Over the past few decades, lithium-sulfur batteries (LSBs) have vast potential to act as the next-generation of rechargeable power source due to their high theoretical specific energy, cost-effectiveness, and environmental benignity. However, insufficient sulfur utilization, inferior cyclability, and rate capability originating from the intrinsic insulating features of the sulfur and notorious polysulfide shuttle are major obstacles to fulfilling the industrialization of LSBs. In this respect, the introduction of a functional barrier layer coating on a separator has been verified as an effective strategy to overcome the aforementioned intractable problems. In this review, we focus on summarizing the current progress of the modified polyolefin-based separators (known as functional separators), including functional separator facing cathodes and functional separator facing anodes. According to the working mechanism, functional separator facing cathodes are divided into physical adsorption separators, chemical adsorption separators, catalytic conversion separators, and multifunctional separators. Meanwhile, functional separator facing anodes are classified into physical barrier separators, induced lithium growth separators, regulated lithium nucleation separators, and hybrid mechanism separators. Finally, the future perspective coupled with the practical utilization of functional separators in LSBs is proposed.

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Section: Functional Separators Facing Cathode With Chemical Adsorptiomentioning

confidence: 99%

Section: Functional Separators Facing Cathode With Catalytic Conversimentioning

confidence: 99%

Section: Functional Separators Facing Anode With Induced Lithium Growmentioning

confidence: 99%

Section: Functional Separators Facing Anode With Nucleation Regulatiomentioning

confidence: 99%

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Functionally Modified Polyolefin-Based Separators for Lithium-Sulfur Batteries: Progress and Prospects

Xiao

Chen

et al. 2020

Front. Energy Res.

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“…To enhance the chemisorption of the interlayer and increase the kinetics of redox reaction, transition metal compounds are greatly studied. [10] For example, transition metal oxides, [11] carbides, [12] sulfides, [13] phosphates, [14] etc. have strong bonding and interaction, which can effectively adsorb with LiPSs.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Behavior Promotion of Polysulfides by Cobalt Selenide/Carbon Cloth Interlayer in Lithium−Sulfur Batteries

et al. 2021

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LithiumÀ sulfur batteries have been regarded as the next generation of competitive batteries because of their high theoretical capacity and energy density. However, the commercial development of lithiumÀ sulfur batteries is restricted by the shuttle action of polysulfides and volumetric expansion of sulfur. Herein, we developed cobalt selenide/carbon cloth composites (CoSe 2 /CC) as the interlayer. CoSe 2 can not only limit the shuttling of polysulfides by CoÀ S bonds and accelerate the catalytic conversion kinetics of sulfur chemistry, but also increases the electrical conductivity of materials, leading to an excellent cycle stability. As a result, the cell with CoSe 2 /CC interlayer has a high initial capacity of 1420 mAh g À 1 at 0.1 C and keeps high-capacity retention of 596 mAh g À 1 after 500 cycles at 1 C rate (70 %). Subsequent electrochemical tests show that CoSe 2 /CC enhance the electrochemical behavior of the polysulfides. Therefore, the hierarchical CoSe 2 /CC composites have promising application potential in lithiumÀ sulfur batteries.

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Mo₂N Quantum Dots Decorated N‐Doped Graphene Nanosheets as Dual‐Functional Interlayer for Dendrite‐Free and Shuttle‐Free Lithium‐Sulfur Batteries

Srinivas

Zhang

et al. 2022

Adv Funct Materials

105

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The industrialization of lithium–sulfur (Li–S) batteries is simultaneously impeded by the shuttle effect of lithium polysulfides and dendrites growth on lithium anode. To address both issues, a novel sulfiphilic and lithiophilic interlayer of Mo2N quantum dots decorated N‐doped graphene‐nanosheet (Mo2N@NG) are presented on polypropylene separator via a facile scalable method. Benefiting from the strong chemisorption ability, eminent electrocatalysis for LiPSs, and high chemical affinity with lithium‐ion (Li+), Mo2N@NG can efficiently catalyze the rapid transformation of LiPSs and induce uniform deposition of Li+. Theoretical calculation and in situ Raman synergistically elucidate the inhibition of shuttle effect and alleviation of dendrite growth. As a result, the assembled Li–S cell with Mo2N@NG/PP separator exhibits remarkable rate performance (860.2 mA h g–1 at 4 C), good cycling stability (0.039% capacity decay per cycle after 800 cycles at 2 C), a high areal capacity of 3.89 mA h cm–2 of Li–S pouch cell (4.5 mg cm–2 and 6 µL mg–1 at 0.2 C), and steady performance in protecting the lithium anode (at 5 mA cm–2 for 1500 h). This present strategy of quantum dots in a hybrid framework has great potential to be generalized to other transition metal‐based catalysts for advanced Li–S batteries.

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Functional mechanism analysis and customized structure design of interlayers for high performance Li-S battery

Cited by 102 publications

References 305 publications

Functionally Modified Polyolefin-Based Separators for Lithium-Sulfur Batteries: Progress and Prospects

Functionally Modified Polyolefin-Based Separators for Lithium-Sulfur Batteries: Progress and Prospects

Electrochemical Behavior Promotion of Polysulfides by Cobalt Selenide/Carbon Cloth Interlayer in Lithium−Sulfur Batteries

Mo₂N Quantum Dots Decorated N‐Doped Graphene Nanosheets as Dual‐Functional Interlayer for Dendrite‐Free and Shuttle‐Free Lithium‐Sulfur Batteries

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Functional mechanism analysis and customized structure design of interlayers for high performance Li-S battery

Cited by 102 publications

References 305 publications

Functionally Modified Polyolefin-Based Separators for Lithium-Sulfur Batteries: Progress and Prospects

Functionally Modified Polyolefin-Based Separators for Lithium-Sulfur Batteries: Progress and Prospects

Electrochemical Behavior Promotion of Polysulfides by Cobalt Selenide/Carbon Cloth Interlayer in Lithium−Sulfur Batteries

Mo2N Quantum Dots Decorated N‐Doped Graphene Nanosheets as Dual‐Functional Interlayer for Dendrite‐Free and Shuttle‐Free Lithium‐Sulfur Batteries

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Product

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Mo₂N Quantum Dots Decorated N‐Doped Graphene Nanosheets as Dual‐Functional Interlayer for Dendrite‐Free and Shuttle‐Free Lithium‐Sulfur Batteries