Ionic/electronic conductivity regulation of n-type polyoxadiazole lithium sulfonate conductive polymer binders for high-performance silicon microparticle anodes

Yu, Yuanyuan; Gao, Haijun; Zhu, Jiadeng; Li, Dazhe; Wang, Fengxia; Jiang, Chunhui; Zhong, Tianhaoyue; Liang, Shuheng; Jiang, Mengjin

doi:10.1016/j.cclet.2020.10.010

Cited by 22 publications

(13 citation statements)

References 44 publications

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“…Several strategies for improving the mechanical strength of the electrodes and building an extended conductive network have been developed to maintain the conductive network of the Si-based anode. Notably, the conducting binder can perform both electrical connection and binding functions [148]. Nevertheless, the applications of conductive binders are generally hindered by the lack of mechanical strength.…”

Section: Binder Design For Micro-si Anodesmentioning

confidence: 99%

The pursuit of commercial silicon-based microparticle anodes for advanced lithium-ion batteries: A review

Liu

et al. 2022

Nano Research Energy

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Silicon (Si) is one of the most promising anode materials for high-energy lithium-ion batteries. However, the widespread application of Si-based anodes is inhibited by large volume change, unstable solid electrolyte interphase, and poor electrical conductivity. During the past decade, significant efforts have been made to overcome these major challenges toward industrial applications. This review summarizes the recent development of microscale Si-based electrodes fabricated by Si microparticles or other industrial bulk materials from the perspective of industrialization. First, the challenges for microscale Si anodes are clarified. Second, structural design strategies of stable micro-sized Si materials are discussed. Third, other critical practical metrics, such as robust binder construction and electrolyte design, are also highlighted. Finally, future trends and perspectives on the commercialization of Si-based anodes are provided. KEYWORDSsilicon, micro-sized particles, lithium-ion batteries, porous structures, polymer binder, electrolyte design Figure 1 Overview of Si-based anodes for LIBs: (a) merits and (b) fundamental challenges. Reproduced with permission from Ref. [16], © Wiley-VCH GmbH 2021.

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Section: Binder Design For Micro-si Anodesmentioning

confidence: 99%

The pursuit of commercial silicon-based microparticle anodes for advanced lithium-ion batteries: A review

Liu

et al. 2022

Nano Research Energy

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“…It is been noticed that electrical conductivity can tremendously influence the overall performance of batteries, especially for their high-rate capability. , The poor electrical conductivity of S has been considered as a severe matter since it is only 5 × 10 –30 S cm –1 at 25 °C, which indicates that it can be barely utilized without conductive additives . To increase the electrical conductivity and the active materials utilization, carbon-based materials and conductive polymers have been extensively applied to combine with S to prepare composites, even with cathode structural designs. − …”

Section: Overview Of Li–s Batteriesmentioning

confidence: 99%

Electrospun Nanofibers Enabled Advanced Lithium–Sulfur Batteries

et al. 2022

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Metrics & MoreArticle Recommendations CONSPECTUS: Lithium−sulfur (Li−S) batteries have been extensively studied because both S and Li have high theoretical capacities, and S is abundant and environmentally friendly. However, their practical applications have been hindered by several challenges, including poor conductivity of S and its intermediates, shuttle effects of polysulfides, Li dendrite growth, etc.Tremendous efforts have been taken to tackle these issues by developing functional S host materials, separators and interlayers, solid-state electrolytes, etc., during the past decade.Compared to structurally complicated materials and intricate preparation approaches, electrospun nanofibers have obtained tremendous interests since they have played an extremely crucial role in improving the overall performance of Li−S cells due to their unique features such as easy-setup, substantial surface area, outstanding flexibility, high porosity, excellent mechanical properties, etc.In this Account, we highlight the advancements and progress of electrospun nanofibers applied for obtaining advanced Li−S batteries based on our research: from the traditional liquid system to a full solid-state cell. It starts with the fundamental electrochemistry and challenges of Li−S batteries and then focuses on the advantages of utilizing electrospun nanofibers in Li−S batteries and their working mechanisms, which are detailed from five perspectives: (i) cathode design; (ii) interlayers; (iii) separators; (iv) solid-state electrolytes; (v) Li anode protection. For example, we will discuss (1) how the appropriate nanofiber cathode designs improve the electrical conductivity and utilization of the cathode, (2) how nanofiber interlayers minimize the diffusion of polysulfides, (3) how nanofiber separators improve cells' rate capability, (4) how nanofiber-based solid-state electrolytes boost the overall ionic conductivity, accelerating the use of Li−S cells, and (5) how the applications of nanofibers suppress the Li dendrite growth. In the end, the critical research directions needed and the remaining challenges to be addressed are summarized. It is expected that this Account would provide an understanding of the importance for achieving advanced Li−S cells via utilizing electrospun nanofibers, inspiring extensive research on their rational designs and promoting the development of this field.

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“…, owing to their excellent film-forming ability and high chemical and thermal stability, as well as the specific properties determined by the oxadiazole ring. 6–11 By contrast, the photoluminescence (PL)-related applications such as fluorescence-based visualization and biological imaging have been significantly less explored for oxadiazole-based polymers, which might be due to the poor fluorescence of conjugated PODs in the aggregated state arising from their rigid polymer backbones and strong intermolecular π–π interactions. 12 Most application scenarios in real life require the PL materials to be used as solid films or in aqueous media.…”

Section: Introductionmentioning

confidence: 99%

“…As an important class of heterocyclic polymers, polyoxadiazoles (PODs) with conjugated heterocyclic rings have been widely studied in heat-resistant materials, gas separation, fuel cells, acid sensors, polymer electroluminescent devices, electron and proton conducting materials, etc., owing to their excellent lm-forming ability and high chemical and thermal stability, as well as the specic properties determined by the oxadiazole ring. [6][7][8][9][10][11] By contrast, the photoluminescence (PL)-related applications such as uorescence-based visualization and biological imaging have been signicantly less explored for oxadiazole-based polymers, which might be due to the poor uorescence of conjugated PODs in the aggregated state arising from their rigid polymer backbones and strong intermolecular p-p interactions. 12 Most application scenarios in real life require the PL materials to be used as solid lms or in aqueous media.…”

Section: Introductionmentioning

confidence: 99%

Catalyst-free synthesis of diverse fluorescent polyoxadiazoles for the facile formation and morphology visualization of microporous films and cell imaging

Xie

et al. 2023

Chem. Sci.

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Ionic/electronic conductivity regulation of n-type polyoxadiazole lithium sulfonate conductive polymer binders for high-performance silicon microparticle anodes

Cited by 22 publications

References 44 publications

The pursuit of commercial silicon-based microparticle anodes for advanced lithium-ion batteries: A review

The pursuit of commercial silicon-based microparticle anodes for advanced lithium-ion batteries: A review

Electrospun Nanofibers Enabled Advanced Lithium–Sulfur Batteries

Catalyst-free synthesis of diverse fluorescent polyoxadiazoles for the facile formation and morphology visualization of microporous films and cell imaging

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