Recent progress in polymer materials for advanced lithium-sulfur batteries

Zhu, Jiadeng; Zhu, Pei; Yan, Chaoyi; Dong, Xia; Zhang, Xiangwu

doi:10.1016/j.progpolymsci.2018.12.002

Cited by 135 publications

(83 citation statements)

References 325 publications

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“…Constructing novel cell configurations of Li‐S chemistry is another effective strategy to regulate the migration and reaction of sulfur species. Various interlayers, such as nanoporous carbons, polymers, and transition metal compounds, have been extensively investigated to block the polysulfide migration and enhance the utilization of sulfur. However, they still show the limited ability for enhancing the performance of Li‐S battery due to the following key problems.…”

Section: Introductionsupporting

confidence: 86%

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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Section: Introductionsupporting

confidence: 86%

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 most common method to address these concerns is through the rational design and implementation of nanostructured sulfur hosts, toward which a great deal of research has been focused [8]. In comparison, the design and implementation of novel polymeric binders has been largely overlooked in Li-S cells [9] and has only recently started to capture the attention of researchers, as shown in recent reviews [10][11][12], yet approaches investigating the entire cathode structure are lacking. To consolidate the current research in the field and provide future research directions, this review investigates the role of polymeric binders in the construction of polymer composite frameworks (PCFs).…”

Section: Introductionmentioning

confidence: 99%

Housing Sulfur in Polymer Composite Frameworks for Li–S Batteries

et al. 2019

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HIGHLIGHTS• The roles of binders in both sulfur host-based and sulfur host-free systems are considered for polymer composite frameworks in lithium-sulfur batteries.• The applications of the existing and potential multifunctional polymer composite frameworks are summarized for manufacturing lithium-sulfur batteries.ABSTRACT Extensive efforts have been devoted to the design of micro-, nano-, and/or molecular structures of sulfur hosts to address the challenges of lithium-sulfur (Li-S) batteries, yet comparatively little research has been carried out on the binders in Li-S batteries. Herein, we systematically review the polymer composite frameworks that confine the sulfur within the sulfur electrode, taking the roles of sulfur hosts and functions of binders into consideration. In particular, we investigate the binding mechanism between the binder and sulfur host (such as mechanical interlocking and interfacial interactions), the chemical interactions between the polymer binder and sulfur (such as covalent bonding, electrostatic bonding, etc.), as well as the beneficial functions that polymer binders can impart on Li-S cathodes, such as conductive binders, electrolyte intake, adhesion strength etc. This work could provide a more comprehensive strategy in designing sulfur electrodes for long-life, large-capacity and high-rate Li-S battery.

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“…[14][15][16] The cathodic charge/discharge reaction of Li-S and Na-S batteries involves the phase transitions of sulfur to metal sulfides based on the two-electron-transfer mechanism (xM + S 8 + 2e − → xM 2 S), which is largely different from the intercalation chemistry of conventional lithium metal oxide cathodes. [19][20][21] These advances have significantly enhanced the capacity and electrochemical stability of the sulfur cathodes. [15,17] Great efforts have focused on the design of the binder of the sulfur cathode to address the challenges in recent years.…”

mentioning

confidence: 99%

Rational Design of Binders for Stable Li‐S and Na‐S Batteries

Guo

Zheng

2019

Adv Funct Materials

120

111

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Binders play a critical role in stabilizing the sulfur cathode of Li-S and Na-S batteries. Over the past decade, the design of binder molecules has gone through tremendous evolution from primarily maintaining the structural integrity of the electrode against volume change to rationally immobilizing polysulfide intermediate and facilitating electron/ion transport in the charge and discharge process. This article reviews the development of binder for Li-S and Na-S batteries from the perspective of molecular design, and comprehensively discusses the correlation between the functions of the binder molecules and the cell performance. It also points out the future challenge and the potential solutions to address them. Figure 2. Timeline of the development of binders in terms of specific functions in Li-S and Na-S batteries. The binder in Li-S batteries has experienced a remarkable evolution in terms of functions, from fundamental structural and mechanical stabilizer (linear, hybrid, [30] dendrimer, [31] and crossedlinked binder [32,33] ) to versatile functions of polysulfide immobilization (polymer with functional groups [34][35][36] or cation groups [37] ) and facilitation of electron transport on the basis of conductive polymer. [38,39] It opens up the research of multifunctional binder. The analogous development route in the binder is found in Na-S batteries. [40,41] Reproduced with permission. [30]

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Recent progress in polymer materials for advanced lithium-sulfur batteries

Cited by 135 publications

References 325 publications

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

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

Housing Sulfur in Polymer Composite Frameworks for Li–S Batteries

Rational Design of Binders for Stable Li‐S and Na‐S Batteries

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