Confined Sulfur in 3 D MXene/Reduced Graphene Oxide Hybrid Nanosheets for Lithium–Sulfur Battery

Bao, Weizhai; Xie, Xiuqiang; Xu, Jing; Guo, Xin; Song, Jianjun; Wu, Wenjian; Su, Dawei; Wang, Guoxiu

doi:10.1002/chem.201702387

Cited by 184 publications

(111 citation statements)

References 69 publications

(189 reference statements)

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“…[117,118] Upon further modification, such kinds of materials are expected to serve as binders with high adhesion, conductivity, polysulfide adsorption, and catalytic characteristic. For example, MXene, which composes of a transition metal, C and/or N, and surface termination group such as O, OH, and/or F, is of great potential to be the conductive additive of binder.…”

Section: Binder Using Conductive 2d Materialsmentioning

confidence: 99%

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

Guo

Zheng

2019

Adv Funct Materials

133

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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Section: Binder Using Conductive 2d Materialsmentioning

confidence: 99%

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

Guo

Zheng

2019

Adv Funct Materials

133

111

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“…The particular arrangement of CNTs was in turn achieved by the action of a CVD catalyst. [143] Mo 2 C/N-G composite has also been obtained by sintering MoO 3 /graphene oxide (MoO 3 /GO) composite with a particular nitrogen source (dicyandiamide).…”

Section: Mxene-graphene Compositesmentioning

confidence: 99%

“…[256] For the above problems, there are two primary solutions. [143,153] MXene-based composites for Li-S batteries are shown in Table 2. [74,229] The other solution is to restrain the LiPSs at their source that is in or on the electrode materials.…”

Section: Lithium-sulfur Batteries Applications Of Mxene-based Compositesmentioning

confidence: 99%

“…Therefore, the cell will have lower resistance, higher capacity, and better cycling stability than when using plain traditional PP separators (Figure 8e). [143] Besides this, the Ti species of the Ti 3 C 2 T x surfaces can connect to elemental S to form TiS bonds by the Lewis acid-base interaction, which result in the LiPSs being constrained by the superficial Ti atoms. Basic treatment of Ti 3 C 2 T x helps with the sulfur loading, and a Ti 3 C 2 T x -S filter on a PP membrane used as a cathode material exhibited a high capacity of 288 mA h g −1 at 12 C. [257] In addition to being covered by a PP membrane, Ti 3 C 2 T x can also be coated onto a glass fiber membrane as a Li-S battery separator.…”

Section: Lithium-sulfur Batteries Applications Of Mxene-based Compositesmentioning

confidence: 99%

“…Moreover, such Ti 3 C 2 T x /GF separators have shown excellent electrochemical performance (721 mA h g −1 at 0.3 C mA g −1 after 100 cycles). [143,153] Furthermore, N-doping MXenes can provide more pores to store sulfur, and the lone pairs of electrons on of N species also contributes to the immobilization of sulfur. [143] Besides this, the Ti species of the Ti 3 C 2 T x surfaces can connect to elemental S to form TiS bonds by the Lewis acid-base interaction, which result in the LiPSs being constrained by the superficial Ti atoms.…”

Section: Lithium-sulfur Batteries Applications Of Mxene-based Compositesmentioning

confidence: 99%

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MXene‐Based Composites: Synthesis and Applications in Rechargeable Batteries and Supercapacitors

Yang

Bao

Jaumaux

et al. 2019

Adv Materials Inter

Self Cite

261

142

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The family of 2D transition metal carbides, nitrides, and carbonitrides (collectively called MXenes) is rapidly studied since the initial synthesis of Ti3C2Tx (MXene). The surface of MXenes etched by hydrofluoric acid has hydrophilic groups (F, OH, and O), which leads the surface to be negatively charged. Consequently, the negatively charged surface can facilitate the compounding of MXenes with other positively charged materials and prevent MXenes from aggregating with some negatively charged substances, thus promoting the formation of a stable dispersion. The MXene‐based composites have better electrochemical performance than both precursors due to synergistic effects. This review elaborates and discusses the development of MXene‐based composites. It is aimed to summarize the various methods of fabricating MXene‐based composites. The applications of MXene‐based composites in batteries and supercapacitors are presented along with analysis of their excellent electrochemical performances. Finally, the authors propose the approach for further enhancing the electrochemical performances of MXene‐based composite electrode materials.

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