Multifunctional binder designs for lithium-sulfur batteries

Qi, Qi; Lv, Xiaohui; Lv, Wei; Yang, Quan‐Hong

doi:10.1016/j.jechem.2019.02.001

Cited by 72 publications

(53 citation statements)

References 131 publications

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“…However, it is of disadvantage for the dispersion of active materials and conductive agents if the viscosity of the binder is too large. Thus, a proper viscosity is necessary to improve the adhesion property of the binder and prevents the Si nanoparticles from deposition and agglomeration . The rheological property of PPP binder is shown in Figure S5.…”

Section: Resultsmentioning

confidence: 99%

A Flexible and Conductive Binder with Strong Adhesion for High Performance Silicon‐Based Lithium‐Ion Battery Anode

Tang

Zheng

et al. 2020

ChemElectroChem

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Silicon is considered to be one of the most promising anode materials for lithium-ion batteries due to its high capacity. But the silicon anodes undergo huge volume changes during the charge and discharge process, leading to fast capacity fade of Si anodes. To solve this problem, we design a ternary polymer binder composed of poly (vinyl alcohol), poly(dopamine hydrochloride) and poly(3,4-ethylenedioxythiophene):poly (styrene sulfonate) for Si anodes. In this polymer composite binder, polydopamine and poly(vinyl alcohol) exhibit strong adhesion with the silicon particles and the copper foils. Additionally, poly (vinyl alcohol) compounded with poly (dopamine hydrochloride) shows high stretchability up to 243.7 %, which benefits for buffering large volume change of Si anodes during cycling. The conducting poly (3,4-ethylenedioxythiophene) : poly (styrene sulfonate) in this binder improves the rate performance. Using this multi-functional binder, the Si anodes show excellent cycling stability even under high Si mass loading.

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Section: Resultsmentioning

confidence: 99%

A Flexible and Conductive Binder with Strong Adhesion for High Performance Silicon‐Based Lithium‐Ion Battery Anode

Tang

Zheng

et al. 2020

ChemElectroChem

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“…Lithium sulfur (Li-S) batteries possess great potential as costeffective and high-energy batteries in various electronics applications due to high theoretical specific capacity (1675 mAh g −1 ) and energy density (2567 Wh kg −1 ) from earth-abundant and low-cost sulfur [1][2][3][4][5][6][7][8] . Unfortunately, their practical applications are seriously prevented by fast capacity decay originating from the notorious shuttling effect of highly soluble lithium polysulfides (Li 2 S n , 3 ≤ n ≤ 8) in electrolyte and non-negligible volume expansion of sulfur during cycling process [3,5,[9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

2D hierarchical yolk-shell heterostructures as advanced host-interlayer integrated electrode for enhanced Li-S batteries

Dong

Shi

et al. 2019

Journal of Energy Chemistry

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Lithium sulfur (Li-S) batteries hold great promising for high-energy-density batteries, but appear rapid capacity fading due to the lack of overall and elaborated design of both sulfur host and interlayer. Herein, we developed a novel two-dimensional (2D) hierarchical yolk-shell heterostructure, constructed by a graphene yolk, 2D void and outer shell of vertically aligned carbon-mediated MoS 2 nanosheets (G@void@MoS 2 /C), as advanced host-interlayer integrated electrode for Li-S batteries. Notably, the 2D void, with a typical thickness of ∼80 nm, provided suitable space for loading and confining nano sulfur, and vertically aligned ultrathin MoS 2 nanosheets guaranteed enriched catalytically active sites to effectively promote the transition of soluble polysulfides. The conductive graphene yolk and carbon mediated shell sufficiently accelerated electron transport. Therefore, the integrated electrode of G@void@MoS 2 /C not only exceptionally confined the sulfur/polysulfides in 2D yolk-shell heterostructures, but also achieved catalytic transition of the residual polysulfides dissolved in electrolyte to solid Li 2 S 2 /Li 2 S, both of which synergistically achieved an extremely low capacity fading rate of 0.05% per cycle over 10 0 0 times at 2 C, outperforming most reported Mo based cathodes and interlayers for Li-S batteries. 2D hierarchical yolkshell heterostructures developed here may shed new insight on elaborated design of integrated electrodes for Li-S batteries.

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“…Consequently, in sustainable and biomass‐based battery materials, more benign binders should be used. Such biopolymeric binders have recently been reviewed by Nirmale et al., Bresser et al., and Li et al., besides further recent reviews mentioning but not focusing on biogenic binders . Being derived from biomass, they are often soluble in water, allowing for more benign production processes compared to electrodes that incorporate PVDF, because these are usually processed in solutions containing hazardous NMP.…”

Section: Electrodesmentioning

confidence: 99%

Sustainable Battery Materials from Biomass

Liedel

2020

ChemSusChem

133

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Sustainable sources of energy have been identified as a possible way out of today's oil dependency and are being rapidly developed. In contrast, storage of energy to a large extent still relies on heavy metals in batteries. Especially when built from biomass‐derived organics, organic batteries are promising alternatives and pave the way towards truly sustainable energy storage. First described in 2008, research on biomass‐derived electrodes has been taken up by a multitude of researchers worldwide. Nowadays, in principle, electrodes in batteries could be composed of all kinds of carbonized and noncarbonized biomass: On one hand, all kinds of (waste) biomass may be carbonized and used in anodes of lithium‐ or sodium‐ion batteries, cathodes in metal–sulfur or metal–oxygen batteries, or as conductive additives. On the other hand, a plethora of biomolecules, such as quinones, flavins, or carboxylates, contain redox‐active groups that can be used as redox‐active components in electrodes with very little chemical modification. Biomass‐based binders can replace toxic halogenated commercial binders to enable a truly sustainable future of energy storage devices. Besides the electrodes, electrolytes and separators may also be synthesized from biomass. In this Review, recent research progress in this rapidly emerging field is summarized with a focus on potentially fully biowaste‐derived batteries.

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Multifunctional binder designs for lithium-sulfur batteries

Cited by 72 publications

References 131 publications

A Flexible and Conductive Binder with Strong Adhesion for High Performance Silicon‐Based Lithium‐Ion Battery Anode

A Flexible and Conductive Binder with Strong Adhesion for High Performance Silicon‐Based Lithium‐Ion Battery Anode

2D hierarchical yolk-shell heterostructures as advanced host-interlayer integrated electrode for enhanced Li-S batteries

Sustainable Battery Materials from Biomass

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