2,2-Dimethyl-1,3-dioxane-4,6‑dione functionalized poly(ethylene oxide)-based polyurethanes as multi-functional binders for silicon anodes of lithium ion batteries

Tsai, Chi-Yang; Liu, Ying‐Ling

doi:10.1016/j.electacta.2021.138180

Cited by 15 publications

(3 citation statements)

References 63 publications

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“…3 d, e and Tables S5–S7 . The adopted equation is as below 2 : where D is the diffusion coefficient of lithium ion (cm 2 /s), L represents for the Li + diffusion length (cm) which equals to the thickness of electrode, τ is the relaxation time (s), Δ E s stands for the steady-state potential change (V) by the current pulse, Δ E t refers to the potential change (V) during the constant current pulse after subtracting the IR drop. All the lithiation state vs D Li + curves show a “W” type for both alloying and dealloying matching well with previous reports 38 .…”

Section: Resultsmentioning

confidence: 99%

Cross-linked multifunctional binder in situ tuning solid electrolyte interface for silicon anodes in lithium ion batteries

Lou,

Zhang,

Zhao

et al. 2023

Sci Rep

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Silicon is considered as the most promising anode material for high performance lithium-ion batteries due to its high theoretical specific capacity and low working potential. However, severe volume expansion problems existing during the process of (de)intercalation which seriously hinders its commercial progress. Binder can firmly adhere silicon and conductive agent to the current collector to maintain the integrity of the electrode structure, thereby effectively alleviating the silicon volume expansion and realizing lithium-ion batteries with high electrochemical performance. In this paper, citric acid (CA) and carboxymethyl cellulose (CMC) are adopted to construct a covalently crosslinked CA@CMC binder by an easy-to-scale-up esterification treatment. The Si@CA@CMC-1 electrode material shows an impressive initial coulombic efficiency (ICE) at 82.1% and after 510 cycles at 0.5 A/g, its specific capacity is still higher than commercial graphite. The excellent electrochemical performance of Si@CA@CMC-1 can be attributed to the ester bonds formed among CA@CMC binder and silicon particles. Importantly, by decoupling in situ EIS combining XPS at different cycles, it can be further proved that the CA@CMC binder can tune the component of SEI which provide a new-route to optimize the performance of silicon.

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Section: Resultsmentioning

confidence: 99%

Cross-linked multifunctional binder in situ tuning solid electrolyte interface for silicon anodes in lithium ion batteries

Lou,

Zhang,

Zhao

et al. 2023

Sci Rep

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“…8e). 249 Plasma-created nano-Si with a specific structure and polymer binder improved the LIB durability and avoided the volume expansion, while coated-c-SiNPs and a new polymer binder decreased the volume variation during anode lithiation/delithiation, resulting in good electrochemical characteristics of 2120 mA h g −1 for 400 mA g −1 after 100 cycles. 250 Poly(aniline- co -anthranilic acid) PAAA, a new Si anode binder, was shown to be electrically conductive and structurally stable.…”

Section: Recent Progress On Si-based Libsmentioning

confidence: 99%

Recent progress and challenges in silicon-based anode materials for lithium-ion batteries

Toki,

Hossain,

Rehman

et al. 2024

Ind. Chem. Mater.

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“…Polyvinylidene fluoride (PVDF) is a commonly used binder due to its high chemical, electrochemical and thermal stabilities. However, it has several problems, such as a low ionic conductivity and a poor adhesion ability, both of which seriously affect the electrochemical properties of the electrode materials [13][14][15]. Compared with the common modification methods of coating and doping, adjusting the type and content of the binder is a more convenient and environmentally friendly method, and can also effectively improve the battery cycling performance.…”

Section: Introductionmentioning

confidence: 99%

Polyethylene Oxide as a Multifunctional Binder for High-Performance Ternary Layered Cathodes

Zhang

Sun

et al. 2021

Polymers

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Nickel cobalt manganese ternary cathode materials are some of the most promising cathode materials in lithium-ion batteries, due to their high specific capacity, low cost, etc. However, they do have a few disadvantages, such as an unstable cycle performance and a poor rate performance. In this work, polyethylene oxide (PEO) with high ionic conductance and flexibility was utilized as a multifunctional binder to improve the electrochemical performance of LiNi0.6Co0.2Mn0.2O2 cathode materials. Scanning electron microscopy showed that the addition of PEO can greatly improve the adhesion of the electrode components and simultaneously enhance the integrity of the electrode. Thus, the PEO-based electrode (20 wt% PEO in PEO/PVDF) shows a high electronic conductivity of 19.8 S/cm, which is around 15,000 times that of the pristine PVDF-based electrode. Moreover, the PEO-based electrode exhibits better cycling stability and rate performance, i.e., the capacity increases from 131.1 mAh/g to 147.3 mAh/g at 2 C with 20 wt% PEO addition. Electrochemical impedance measurements further indicate that the addition of the PEO binder can reduce the electrode resistance and protect the LiNi0.6Co0.2Mn0.2O2 cathode materials from the liquid electrolyte attack. This work offers a simple yet effective method to improve the cycling performance of the ternary cathode materials by adding an appropriate amount of PEO as a binder in the electrode fabrication process.

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2,2-Dimethyl-1,3-dioxane-4,6‑dione functionalized poly(ethylene oxide)-based polyurethanes as multi-functional binders for silicon anodes of lithium ion batteries

Cited by 15 publications

References 63 publications

Cross-linked multifunctional binder in situ tuning solid electrolyte interface for silicon anodes in lithium ion batteries

Cross-linked multifunctional binder in situ tuning solid electrolyte interface for silicon anodes in lithium ion batteries

Recent progress and challenges in silicon-based anode materials for lithium-ion batteries

Polyethylene Oxide as a Multifunctional Binder for High-Performance Ternary Layered Cathodes

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