Promoting lithium polysulfide/sulfide redox kinetics by the catalyzing of zinc sulfide for high performance lithium-sulfur battery

Xu, Jing; Zhang, Wenxue; Fan, Hongsong; Cheng, Faliang; Su, Dawei; Wang, Guoxiu

doi:10.1016/j.nanoen.2018.06.046

Cited by 359 publications

(233 citation statements)

References 41 publications

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“…The S 2p XPS spectra ( Figure S19, Supporting Information) of the polysulfide-treated CuNWs-GN/PI/LLZO separator reveals the existence of the oxidation product (Li x SO y ) of polysulfides and copper sulfides, respectively. [20,23] These results clearly demonstrate the strong chemical reaction between metallic copper NWs and polysulfides and highly active copper sulfides are possibly generated on the highly conductive graphene nanosheets, which are expected to be beneficial for the transformation of sulfur to Li 2 S and MgS due to the balanced ion/ electron conductivity. [21,22] After polysulfide treating (Figure 3d), two couples of peaks at 956.4/934.7 and 964.4/943.2 eV are clearly observed, which could be ascribed to the Cu 2p 1/2 /Cu 2p 3/2 signals of copper sulfides (Cu + and/or Cu 2+ ) and Cu 2+ of satellites, respectively.…”

Section: Functionalities Of the As-designed Separatorsmentioning

confidence: 92%

“…The results clearly demonstrate that the CuNWs-GN/PI/LLZO separator interacts more strongly with soluble polysulfide intermediates compared to nonpolar acetylene black-and graphene nanosheets-based separators. [20] The chemical reaction products between copper nanowires and polysulfide species have been investigated. It is clearly observed that the pristine polysulfide solution shows a strong adsorption edge in the near infrared region, while the absorption edge for solutions treated with varied separators shift to far-infrared region.…”

Section: Functionalities Of the As-designed Separatorsmentioning

confidence: 99%

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A Multifunctional Separator Enables Safe and Durable Lithium/Magnesium–Sulfur Batteries under Elevated Temperature

Zhou

Chen

Fang

et al. 2019

Advanced Energy Materials

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Rechargeable metal–sulfur batteries encounter severe safety hazards and fast capacity decay, caused by the flammable and shrinkable separator and unwanted polysulfide dissolution under elevated temperatures. Herein, a multifunctional Janus separator is designed by integrating temperature endurable electrospinning polyimide nonwovens with a copper nanowire‐graphene nanosheet functional layer and a rigid lithium lanthanum zirconium oxide‐polyethylene oxide matrix. Such architecture offers multifold advantages: i) intrinsically high dimensional stability and flame‐retardant capability, ii) excellent electrolyte wettability and effective metal dendritic growth inhibition, and iii) powerful physical blockage/chemical anchoring capability for the shuttled polysulfides. As a consequence, the as constructed lithium–sulfur battery using a pure sulfur cathode displays an outstandingly high discharge capacity of 1402.1 mAh g−1 and a record high cycling stability (approximately average 0.24% capacity decay per cycle within 300 cycles) at 80 °C, outperforming the state‐of‐the‐art results in the literature. Promisingly, a high sulfur mass loading of ≈3.0 mg cm−2 and a record low electrolyte/sulfur ratio of 6.0 are achieved. This functional separator also performs well for a high temperature magnesium–sulfur battery. This work demonstrates a new concept for high performance metal–sulfur battery design and promises safe and durable operation of the next generation energy storage systems.

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Section: Functionalities Of the As-designed Separatorsmentioning

confidence: 92%

Section: Functionalities Of the As-designed Separatorsmentioning

confidence: 99%

A Multifunctional Separator Enables Safe and Durable Lithium/Magnesium–Sulfur Batteries under Elevated Temperature

Zhou

Chen

Fang

et al. 2019

Advanced Energy Materials

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“…[50][51][52][53][54] However, both the nitrides and sulfides demonstrate a weaker adsorption ability which exerts an important influence on electrochemical performance in the adsorptioncatalysis synergy system. The high conductivity is the main advantage of nitrides as compared with sulfides, which can enable the fast electron transfer and thus improve the electrochemical utilization of active sulfur.…”

Section: Catalysis Superiority Synergymentioning

confidence: 99%

“…Typically, ZnS, [50] VS 2 , [51] Co 3 S 4 , [52] VS 4 , [53] and MoS 2 [54] are the most common components, which have been demonstrated with great potential in alleviating the LiPSs diffusion out of the sulfur hosts. Typically, ZnS, [50] VS 2 , [51] Co 3 S 4 , [52] VS 4 , [53] and MoS 2 [54] are the most common components, which have been demonstrated with great potential in alleviating the LiPSs diffusion out of the sulfur hosts.…”

Section: Catalysis Superiority Synergymentioning

confidence: 99%

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

Zhang

Chen

Xue

et al. 2019

Advanced Energy Materials

300

244

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Lithium‐sulfur (Li‐S) batteries are one of the most promising next‐generation energy‐storage systems. Nevertheless, the sluggish sulfur redox and shuttle effect in Li‐S batteries are the major obstacles to their commercial application. Previous investigations on adsorption for LiPSs have made great progress but cannot restrain the shuttle effect. Catalysts can enhance the reaction kinetics, and then alleviate the shuttle effect. The synergistic relationship between adsorption and catalysis has become the hotspot for research into suppressing the shuttle effect and improving battery performance. Herein, the adsorption‐catalysis synergy in Li‐S batteries is reviewed, the adsorption‐catalysis designs are divided into four categories: adsorption‐catalysis for LiPSs aggregation, polythionate or thiosulfate generation, and sulfur radical formation, as well as other adsorption‐catalysis. Then advanced strategies, future perspectives, and challenges are proposed to aim at long‐life and high‐efficiency Li‐S batteries.

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“…The subsequent current peak indicates the nucleation and growth of solid Li 2 S, and the residual current in the last stage represents the reduction of Li 2 S 6 . As a result, the entire process can be divided into three parts, including the reduction of Li 2 S 8 , precipitation of Li 2 S, and reduction of Li 2 S 6 , which have been distinguished by different colors . According to the literatures, the speed of peak current response and area of Li 2 S precipitation are important indexes to evaluate the electrochemical activity of solid–liquid conversion of polysulfides .…”

Section: Resultsmentioning

confidence: 99%

A Freestanding Flexible Single‐Atom Cobalt‐Based Multifunctional Interlayer toward Reversible and Durable Lithium‐Sulfur Batteries

Zhou

et al. 2020

Small Methods

130

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The development of Li‐S batteries is greatly hindered by the polysulfide shuttling and sluggish sulfur redox kinetics, leading to low utilization of active materials and rapid capacity decay. Herein, a freestanding multifunctional interlayer, prepared by layer‐by‐layer assembling of the single‐atom cobalt‐anchored nitrogen‐doped carbon nanosheets (NC@SA‐Co) and dual network of carbon nanotube‐cellulose nanofiber (CNT‐CNF) hybrid, is proposed to effectively enhance the polysulfide immobilization and sulfur redox kinetics. The conductive CNT network acts as the physical barrier to confine the polysulfide diffusion and to facilitate the reuse of polysulfides. The oxygen‐group‐terminated CNF network allows the hopping of Li+ ion and suppresses the polysulfide crossover due to the strong electrostatic repulsion. Moreover, it is demonstrated that the 2D NC@SA‐Co with numerous well‐defined single sites of Co–N4 can effectively serve as an electrocatalyst to boost the reversible reaction of polysulfides. As a result, the assembled Li‐S batteries with the multifunctional interlayer deliver a high reversible specific capacity of 1160 mAh g−1 at 0.1 C and an ultralow capacity decay of 0.058% per cycle over 700 cycles. Even with a high sulfur loading of 7.2 mg cm−2, a high areal capacity of 8.3 mAh cm−2 can be achieved.

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Promoting lithium polysulfide/sulfide redox kinetics by the catalyzing of zinc sulfide for high performance lithium-sulfur battery

Cited by 359 publications

References 41 publications

A Multifunctional Separator Enables Safe and Durable Lithium/Magnesium–Sulfur Batteries under Elevated Temperature

A Multifunctional Separator Enables Safe and Durable Lithium/Magnesium–Sulfur Batteries under Elevated Temperature

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

A Freestanding Flexible Single‐Atom Cobalt‐Based Multifunctional Interlayer toward Reversible and Durable Lithium‐Sulfur Batteries

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