A 3D cross-linked graphene-based honeycomb carbon composite with excellent confinement effect of organic cathode material for lithium-ion batteries

Sui, Dong; Xu, Lingqun; Zhang, Hongtao; Sun, Zhenhe; Kan, Bin; Ma, Yanfeng; Chen, Yongsheng

doi:10.1016/j.carbon.2019.10.106

Cited by 103 publications

(47 citation statements)

References 41 publications

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“…Using Brunauer‐Emmett‐Teller (BET) measurements, the specific surface area for the 3D‐printed electrode was calculated to be 60.4 m 2 g −1 (Figure S3a, Supporting Information), and the pore volume was measured to be 0.18 cm 3 g −1 (Figure S3b, Supporting Information). These measurements confirm that 3D printed porous electrodes could be fabricated to have the desired thickness and high specific surface area, which are key factors in improving areal electrochemical performance …”

Section: Resultssupporting

confidence: 55%

3D‐Printed Stretchable Micro‐Supercapacitor with Remarkable Areal Performance

Liu

Fan

et al. 2020

Advanced Energy Materials

206

173

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While stretchable micro‐supercapacitors (MSCs) have been realized, they have suffered from limited areal electrochemical performance, thus greatly restricting their practical electronic application. Herein, a facile strategy of 3D printing and unidirectional freezing of a pseudoplastic nanocomposite gel composed of Ti3C2Tx MXene nanosheets, manganese dioxide nanowire, silver nanowires, and fullerene to construct intrinsically stretchable MSCs with thick and honeycomb‐like porous interdigitated electrodes is introduced. The unique architecture utilizes thick electrodes and a 3D porous conductive scaffold in conjunction with interacting material properties to achieve higher loading of active materials, larger interfacial area, and faster ion transport for significantly improved areal energy and power density. Moreover, the oriented cellular scaffold with fullerene‐induced slippage cell wall structure prompts the printed electrode to withstand large deformations without breaking or exhibiting obvious performance degradation. When imbued with a polymer gel electrolyte, the 3D‐printed MSC achieves an unprecedented areal capacitance of 216.2 mF cm−2 at a scan rate of 10 mV s−1, and remains stable when stretched up to 50% and after 1000 stretch/release cycles. This intrinsically stretchable MSC also exhibits high rate capability and outstanding areal energy density of 19.2 µWh cm−2 and power density of 58.3 mW cm−2, outperforming all reported stretchable MSCs.

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Section: Resultssupporting

confidence: 55%

3D‐Printed Stretchable Micro‐Supercapacitor with Remarkable Areal Performance

Liu

Fan

et al. 2020

Advanced Energy Materials

206

173

View full text Add to dashboard Cite

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“…Owing to the abundance of functional groups, large specific surface area, and excellent electrical conductivity, graphene has attracted more interest in energy storage materials fields (Wu et al, 2019b;Ma et al, 2020c;Sui et al, 2020). In Li-S batteries, many researchers combined graphene with MWCNTs as barrier materials to inhibit polysulfides migration (Sun et al, 2018;Shi et al, 2019).…”

Section: Mwcnts-based Compositesmentioning

confidence: 99%

Application of Carbon Nanotube-Based Materials as Interlayers in High-Performance Lithium-Sulfur Batteries: A Review

et al. 2020

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With the ever-increasing demands of electrochemical energy storage, lithium-sulfur (Li-S) batteries have drawn more attention because of their superior theoretical energy density and high specific capacity. However, practical applications of Li-S batteries suffer from problems such as low conductivity of sulfur and discharged products, severe polysulfide shuttling effect, and large volume change of sulfur during cycling, resulting in sluggish rate performance, and unsatisfactory cycle life. Various nanostructured carbon materials have been served as barrier layers to overcome these problems. In particular, carbon nanotubes (CNTs) with unique 1D nanostructure, have been introduced to Li-S batteries as the intermediate layers because of its superior flexibility, excellent electrical conductivity, and good chemical stability. Moreover, CNTs and CNTs-based barrier layers could also curb lithium polysulfides shuttling. In the minireview, we summarize recent works of CNTs-based materials as modifying interlayers for Li-S batteries. In addition, the strategies to enhance electrochemical performances of the batteries are summarized and discussed. Finally, the challenges and prospects for future research of CNTs-based materials as interlayer are proposed. We hope this review will be useful for designing and fabricating high-performance Li-S batteries and boost their practical applications.

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“…[26,27] Conductive coatings, and the incorporation of conductive additives, have been used to enhance charge transport in organic electroactive materials, and these strategies have been shown to improve rate capability. [28][29][30] For example, a microporous polyimide covalent-organic framework and carbon nanotube (CNT) composite that was prepared by in situ polymerization was reported to exhibit a near 100 % capacity retention after 8000 cycles, 95 mAh g À 1 at 2000 mA g À 1 (19.2 C), and 104 mAh g À 1 at 200 mA g À 1 (1.9 C). [31] Taken together, these results suggest that covalent-organic framework composites can be made to be highly stable and to undergo fast redox reactions.…”

Section: Introductionmentioning

confidence: 99%

Crosslinked Polyimide and Reduced Graphene Oxide Composites as Long Cycle Life Positive Electrode for Lithium‐Ion Cells

et al. 2020

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Conjugated polymers with electrochemically active redox groups are a promising class of positive electrode material for lithium-ion batteries. However, most polymers, such as polyimides, possess low intrinsic conductivity, which results in low utilization of redox-active sites during charge cycling and, consequently, poor electrochemical performance. Here, it was shown that this limitation can be overcome by synthesizing polyimide composites (PIX) with reduced graphene oxide (rGO) using an in situ polycondensation reaction. The polyimide composites showed increased charge-transfer performance and much larger specific capacities, with PI50, which contains 50 wt % of rGO, showing the largest specific capacity of 172 mAh g À 1 at 500 mA g À 1. This corresponds to a high utilization of the redox active sites in the active polyimide (86 %), and this composite retained 80 % of its initial capacity (125 mAh g À 1) after 9000 cycles at 2000 mA g À 1 .

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A 3D cross-linked graphene-based honeycomb carbon composite with excellent confinement effect of organic cathode material for lithium-ion batteries

Cited by 103 publications

References 41 publications

3D‐Printed Stretchable Micro‐Supercapacitor with Remarkable Areal Performance

3D‐Printed Stretchable Micro‐Supercapacitor with Remarkable Areal Performance

Application of Carbon Nanotube-Based Materials as Interlayers in High-Performance Lithium-Sulfur Batteries: A Review

Crosslinked Polyimide and Reduced Graphene Oxide Composites as Long Cycle Life Positive Electrode for Lithium‐Ion Cells

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