Lithium polyacrylate polymer coating enhances the performance of graphite/silicon/carbon composite anodes

Truong, Thi BeTa; Chen, Ying-Ru; Lin, Guan‐Yu; Lin, Han-Tu; Wu, Yi‐Shiuan; Yang, Chun‐Chen

doi:10.1016/j.electacta.2020.137387

Cited by 13 publications

(12 citation statements)

References 66 publications

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“…According to previous reports, the additional plateau could be assigned to the side reaction of the surface residual lithium source and PAA. 19,21,22 As can be seen from Figure 1d, the side effects have a slight effect on the discharge capacity. Figure S5 depicts the differential curves of different cycles.…”

Section: Resultsmentioning

confidence: 85%

“…The modified PVDF cathode shows enhanced electrochemical performance in capacity and cycle life. As shown in Figure b, during the first 150 cycles, N/3%PAA displays lower discharge capacity and cycling performance than primary materials, which may be because of the side reaction of the surface residual lithium source and PAA . N/3%PAA displays a capacity retention of 39.16% and the N/811 only shows a capacity retention of 26.10% at a high voltage (2.7–4.5 V) after 500 cycles.…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure 1b, during the first 150 cycles, N/3% PAA displays lower discharge capacity and cycling performance than primary materials, which may be because of the side reaction of the surface residual lithium source and PAA. 19 N/ 3%PAA displays a capacity retention of 39.16% and the N/811 only shows a capacity retention of 26.10% at a high voltage (2.7−4.5 V) after 500 cycles. Figure 1c shows the rate capability at different current densities, the electrode with N/ 3%PAA also displays a superior rate capability of 158 mA h g −1 at 10 C. However, the electrode with pure PVDF only possesses 100 mA h g −1 .…”

Section: Resultsmentioning

confidence: 99%

“…PAA and its salts have a number of oxygen-containing groups (−COOH) in the molecular chain, which can improve the cycling performance of batteries. 19 In this work, a modified PVDF with PAA was adapted to NCM811. We for the first time discovered that the enhanced electrochemical performance was realized via a chemical reaction between PAA and the residual lithium on the surface during the cycling, which formed an in situ electrochemical lithium propionic acid coating layer during the charge/ discharge process and sustained the stability of the layered structure.…”

Section: Introductionmentioning

confidence: 99%

“…PAA is a water-soluble chain polymer that can form salts with many metal ions. PAA and its salts have a number of oxygen-containing groups (−COOH) in the molecular chain, which can improve the cycling performance of batteries . In this work, a modified PVDF with PAA was adapted to NCM811.…”

Section: Introductionmentioning

confidence: 99%

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New Insights into the Mechanism of Enhanced Performance of Li[Ni_0.8Co_0.1Mn_0.1]O₂ with a Polyacrylic Acid-Modified Binder

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A binder is an important component in lithium-ion batteries and plays a significant role in maintaining the properties of active substances. Most studies in the field of binders have only focussed on physical properties such as bonding performance. Here, a polyacrylic acidmodified binder was designed and adapted to Li[Ni 0.8 Co 0.1 Mn 0.1 ]O 2 , which enhanced the electrochemical stability of Li[Ni 0.8 Co 0.1 Mn 0.1 ]O 2 from 30.2 to 66.6% (300 cycles at 1 C). We for the first time discovered that this was caused by a chemical reaction between polyacrylic acid and the residual lithium on the surface during the cycling, which formed a lithium propionic acid coating layer and maintained the stability of the layered structure.

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Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New Insights into the Mechanism of Enhanced Performance of Li[Ni_0.8Co_0.1Mn_0.1]O₂ with a Polyacrylic Acid-Modified Binder

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Integrating SEI into Layered Conductive Polymer Coatings for Ultrastable Silicon Anodes

et al. 2022

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Tackling the huge volume expansion of silicon (Si) anode desires a stable solid electrolyte interphase (SEI) to prohibit the interfacial side reactions. Here, a layered conductive polyaniline (LCP) coating is built on Si nanoparticles to achieve high areal capacity and long lifespan. The conformal LCP coating stores electrolyte in interlamination spaces and directs an in situ formation of LCP‐integrated hybrid SEI skin with uniform distribution of organic and inorganic components, enhancing the flexibility of the SEI to buffer the volume changes and maintaining homogeneous ion transport during cycling. As a result, the Si anode shows a remarkable cycling stability under high areal capacity (≈3 mAh cm−2) after 150 cycles and good rate performance of 942 mAh g−1 at 5 A g−1. This work demonstrates the great potential of regulating the SEI properties by a layered polymer‐directing SEI formation for the mechanical and electrochemical stabilization of Si anodes.

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A Tailored Interface Design for Anode‐Free Solid‐State Batteries

Wen,

Wang,

Wang

et al. 2023

Advanced Materials

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Anode‐free solid‐state batteries (AFSSBs) are considered to be one of the most promising high‐safety and high‐energy storage systems. However, low Coulombic efficiency stemming from severe deterioration on solid electrolyte/current collector (Cu foil) interface and undesirable Li dendrite growth impede their practical application, especially when rigid garnet electrolyte is used. Here, an interfacial engineering strategy between garnet electrolyte and Cu foil is introduced for stable and highly efficient AFSSBs. By utilizing the high Li ion conductivity of LiC6 layer, interfacial self‐adaption ability arising from ductile lithiated polyacrylic acid polymer layer and regulated Li deposition via Li‐Ag alloying reaction, the garnet‐based AFSSB delivers a stable long‐term operation. Additionally, when combined with a commercial LiCoO2 cathode (3.1 mAh cm−2), the cell also exhibits an outstanding capacity retention due to the tailored interface design. The strategies for novel AFSSBs architecture thus offer an alternative route to design next‐generation batteries with high safety and high density.

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Lithium polyacrylate polymer coating enhances the performance of graphite/silicon/carbon composite anodes

Cited by 13 publications

References 66 publications

New Insights into the Mechanism of Enhanced Performance of Li[Ni_0.8Co_0.1Mn_0.1]O₂ with a Polyacrylic Acid-Modified Binder

New Insights into the Mechanism of Enhanced Performance of Li[Ni_0.8Co_0.1Mn_0.1]O₂ with a Polyacrylic Acid-Modified Binder

Integrating SEI into Layered Conductive Polymer Coatings for Ultrastable Silicon Anodes

A Tailored Interface Design for Anode‐Free Solid‐State Batteries

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Lithium polyacrylate polymer coating enhances the performance of graphite/silicon/carbon composite anodes

Cited by 13 publications

References 66 publications

New Insights into the Mechanism of Enhanced Performance of Li[Ni0.8Co0.1Mn0.1]O2 with a Polyacrylic Acid-Modified Binder

New Insights into the Mechanism of Enhanced Performance of Li[Ni0.8Co0.1Mn0.1]O2 with a Polyacrylic Acid-Modified Binder

Integrating SEI into Layered Conductive Polymer Coatings for Ultrastable Silicon Anodes

A Tailored Interface Design for Anode‐Free Solid‐State Batteries

Contact Info

Product

Resources

About

New Insights into the Mechanism of Enhanced Performance of Li[Ni_0.8Co_0.1Mn_0.1]O₂ with a Polyacrylic Acid-Modified Binder

New Insights into the Mechanism of Enhanced Performance of Li[Ni_0.8Co_0.1Mn_0.1]O₂ with a Polyacrylic Acid-Modified Binder