An Aqueous Inorganic Polymer Binder for High Performance Lithium–Sulfur Batteries with Flame-Retardant Properties

Zhou, Guangmin; Li, Kai; Fan, Yanchen; Yuan, Mengqi; Liu, Bofei; Liu, Wei; Shi, Feifei; Liu, Yayuan; Chen, Wei; Lopez, Jeffrey; Zhuo, Denys; Zhao, Jie; Tsao, Yuchi; Huang, Xuanyi; Zhang, Qianfan; Cui, Yi

doi:10.1021/acscentsci.7b00569

Cited by 153 publications

(129 citation statements)

References 59 publications

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“…[85] Some Adv. [36] The strong polar PO bond in APP polymer contributes to high binding energies toward sulfur/polysulfide (2.16-2.30 eV). Mater.…”

Section: Immobilization Of Polysulfidementioning

confidence: 99%

“…[35] Apart from polymers with electron-withdrawing functional groups, cationic polymers are alternatives to anchor polysulfides, by taking advantage of the strong electrostatic interaction between the cations and polysulfide anions. [36] Copyright 2018, American Chemical Society. Binders for immobilization of polysulfide.…”

Section: Immobilization Of Polysulfidementioning

confidence: 99%

“…

Binders play a critical role in stabilizing the sulfur cathode of 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. 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.

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confidence: 99%

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

Guo

Zheng

2019

Adv Funct Materials

127

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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“…[85] Some Adv. [36] The strong polar PO bond in APP polymer contributes to high binding energies toward sulfur/polysulfide (2.16-2.30 eV). Mater.…”

Section: Immobilization Of Polysulfidementioning

confidence: 99%

Section: Immobilization Of Polysulfidementioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

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

Guo

Zheng

2019

Adv Funct Materials

127

111

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“…[170] Notwithstanding, the PVDF binder suffers from two key disadvantages of cost and toxicity, plus low flexibility which result in the breakdown of the initial strong bonds with the active materials during longterm cycling. [172][173][174] Not only the aqueous electrolytes can provide an opportunity for cheaper and nontoxic binders, but it is also indeed a requirement, as PVdF gradually dissolves in the aqueous electrolytes. Therefore, there is a quest for finding alternative binders for LIBs, and aqueous binders can be noticeably advantageous.…”

Section: Bindersmentioning

confidence: 99%

High‐Energy Aqueous Lithium Batteries

Eftekhari¹

2018

Advanced Energy Materials

152

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research, aqueous electrolytes were occasionally employed for the investigation of cathode materials instead of the conventional nonaqueous electrolytes. [9,10] It was discussed that the simplicity of an aqueous electrolyte provides a better opportunity for the fundamental studies of the process of intercalation/deintercalation of Li-ions as opposed to the nonaqueous electrolytes. For instance, although the formation of solid electrolyte interphase (SEI) is of utmost importance for the cyclability of LIB, the significant role of the electrolyte does not allow to exclusively study the electrochemical behavior of the electrode material under consideration. The current research has specifically targeted the development of ARLBs, but in practice, most of the recent papers have followed the same line of research in investigating a limited range of cathode and anode materials in the same aqueous electrolytes. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] A possible reason is that the key advantage of ARLBs was low cost, and thus, the focus was limited to a few inexpensive materials (e.g., lithium salts). Aqueous electrolytes are definitely excellent choices for the fundamental studies of electrode materials, but the practical development of ARLBs needs overcoming the key obstacles rather than finding more cathode materials.In any case, aqueous electrolytes were occasionally used during the 2000s by various research groups, but there was no vivid plan for the development of ARLBs. These works have been extensively reviewed before, [29][30][31][32][33] and it is not aimed to repeat the general works on aqueous electrolytes here. During the recent years, new opportunities have been introduced, which can extend the stable potential window of aqueous electrolyte to the range of 3-4 V. Upon this advancement, aqueous electrolytes can fairly compete with the conventional nonaqueous electrolytes for the fabrication of cheaper and safer LIBs. On the other hand, novel designs such as self-healing [34] or flexible [16,35,36] ARLBs have paved the path for new practical potentials of aqueous electrolytes. The present paper specifically focuses on the recent advancements and attempts to foster the strategy of research to shed light on the pathway of this emerging area of research. Two factors are directly responsible for achieving a high energy density, the specific capacity, and the cell voltage. Since the former is not massively controlled by the electrolyte and the specific capacity of most electroactive Owing to the high voltage of lithium-ion batteries (LIBs), the dominating electrolyte is non-aqueous. The idea of an aqueous rechargeable lithium battery (ARLB) dates back to 1994, but it had attracted little attention due to the narrow stable potential window of aqueous electrolytes, which results in low energy density. However, aqueous electrolytes were employed during the 2000s for the fundamental studies of electrode materials in the absence of side reactions such as the decomposition of organic spec...

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“…As previously mentioned, the reduction wave at À1.30 V changed to one at À1.43 Vw ith the increaseo fs ulfur concentration from 10 to 25 mm.T he peaks of S 3 C À and S 6 2À decreased by the reduction whereas that of S 3 2À increased by the reduction peak. [40][41][42] At low sulfur concentration, V oc was located on the reduction side, and the main redox reactions in the thermocells hould be R 3 /O 1 in Figure 4a (S 3 C À + e À ÐS 3 2À )o r R 2 /O 2 (S 8 2À + e À Ð2S 4 2À ). (3)].…”

Section: Cyclic Voltammetrymentioning

confidence: 99%

Electrochemical Thermoelectric Conversion with Polysulfide as Redox Species

et al. 2019

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Thermocells convert waste heat to electricity without any pollution; however, the high cost and corrosivity of redox species hinder their commercialization. In this work, a thermocell that utilizes abundant polysulfide as redox species was demonstrated for the first time. 1‐Butyl‐1‐methylpyrrolidinium polysulfide [(P14)2S3] was synthesized, and the redox species were prepared by the addition of sulfur to the (P14)2S3 solution in DMSO. In thermoelectric measurements, the Seebeck coefficient changed from −0.68 to +0.5 mV K−1 through addition of sulfur to the cell. Operando UV/Vis spectroscopy and open‐circuit voltage analysis revealed that this effect was attributed to the change in the dominating redox reactions by the addition of sulfur. This result also provides a thermodynamic view on polysulfides electrochemistry, which is of high importance for lithium–sulfur batteries.

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An Aqueous Inorganic Polymer Binder for High Performance Lithium–Sulfur Batteries with Flame-Retardant Properties

Cited by 153 publications

References 59 publications

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

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

High‐Energy Aqueous Lithium Batteries

Electrochemical Thermoelectric Conversion with Polysulfide as Redox Species

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