Polyanthraquinone/CNT nanocomposites as cathodes for rechargeable lithium ion batteries

Tang, Duihai; Zhang, Wenting; Qiao, Zhen; Liu, Yunling; Wang, Donghai

doi:10.1016/j.matlet.2017.11.119

Cited by 15 publications

(9 citation statements)

References 19 publications

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“…[56] In other cases, the intimatel inkage of active materiala nd conductive carbon led to an increased stability [57] or rate capability. [58] Nevertheless,f or all of the abovementioned cells, additional conductive carbon additive wasu sed for the preparation of the electrodes. In contrast, Wei et al prepared poly(2,5-dihydroxyl-1,4-benzoquinonyl sulfide) on singlewalled carbon nanotubes (SWCNTs), which wass ubsequently used as electrode materialw ithout furtherc onductive additive or binder.T he resulting hybrid lithium cell showed ac apacity of 120 mAh g À1 with only 15 %l oss over 500 cycles.…”

Section: Quinones Linked To Conductive Substratesmentioning

confidence: 99%

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

2019

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In times of spreading mobile devices, organic batteries represent a promising approach to replace the well‐established lithium‐ion technology to fulfill the growing demand for small, flexible, safe, as well as sustainable energy storage solutions. In the last years, large efforts have been made regarding the investigation and development of batteries that use organic active materials since they feature superior properties compared to metal‐based, in particular lithium‐based, energy‐storage systems in terms of flexibility and safety as well as with regard to resource availability and disposal. This Review compiles an overview over the most recent studies on the topic. It focuses on the different types of applied active materials, covering both known systems that are optimized and novel structures that aim at being established.

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Section: Quinones Linked To Conductive Substratesmentioning

confidence: 99%

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

2019

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“…12 The solubility of organic electrode materials in the electrolyte causes fast capacity fading, which thus diminishes battery lifetime. 13−15 To solve this problem, various techniques have been proposed, for instance, introducing ionic bonding, 16 more conductive additives or binder, 17 ionic liquids as electrolytes, 18 or polymerization approaches. 19 methods, polymerization techniques can be promising for the dissolution problems because of the limiting solubility of the polymer structures in organic electrolyte compared with small organic molecules.…”

Section: Introductionmentioning

confidence: 99%

A Flame-Retardant and Insoluble Inorganic–Organic Hybrid Cathode Material Based on Polyphosphazene with Pyrene-Tetraone for Lithium Ion Batteries

Yeşilot

Kılıç

Sarıyer

et al. 2021

ACS Appl. Energy Mater.

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A cathode material based on polyphosphazene with pyrene-4,5,9,10-tetraone (PTO) units as electroactive groups with a high specific capacity in the side chain, poly[(bis(2-amino-4,5,9,10-pyrenetetraone)]phosphazene (PPAPT), is synthesized. The structural characterization of PPAPT is carried out by using appropriate standard spectroscopic methods such as 31P NMR spectroscopy, FT-IR, DSC, and TGA. The material is found to be an insoluble and halogen-free flame retardant in accordance with the results of the simple flame test and solubility control in electrolyte solutions accompanied by UV–vis analysis. The electrochemical performance of PPAPT is evaluated as a Li–ion battery cathode material. The fabricated cells demonstrate immensely good capacity retention with 72% after 500 discharge–charge cycles at a high current density of 20 C. In comparison with the pristine PTO, introducing a PTO unit into the side chain of the polyphosphazene leads to substantially improved performance because of the lowered LUMO energy levels of PPAPT. In order to investigate the reversibility of carbonyl groups as an electroactive side with respect to their chemical composition, complementary chemical post-mortem analyses are performed by FT-IR, X-ray photoelectron spectroscopy (XPS) analysis. Density functional theory (DFT) calculations are also proposed to determine HOMO–LUMO levels and investigate the lithiation mechanism of PPAPT.

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“…Lithium-ion batteries (LIBs) have been widely used in communications, electronics, and transportation with the development of portable technology. − At present, graphite is usually used in commercial LIBs as the anode active material because of its good stability, high conductivity, and low cost . However, during the long term of cyclic charge and discharge processes, the performance of LIBs is jeopardized by the volume expansion problem of the graphite active material, leading to battery capacity loss and internal resistance increase. − During insertion and deinsertion of lithium ions, the stability of the anode is destroyed due to the change in crystal lattice. Deformation of the anode causes destruction of the solid electrolyte interphase (SEI), leading to separation between the active material and the current collector .…”

Section: Introductionmentioning

confidence: 99%

Lightweight Through-Hole Copper Foil as a Current Collector for Lithium-Ion Batteries

Fei

Dong

Gong

et al. 2021

ACS Appl. Mater. Interfaces

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In the past few decades, much effort has been dedicated to improve electrochemical performance of lithium-ion batteries (LIBs) through material design. Less attention, however, has been paid to structure engineering of battery components, which is an effective way for improving the electrochemical performance of LIBs. In this work, a lightweight Cu current collector with a through-hole array and columnar crystal on the surface (CC/THCu) was designed and fabricated using a nanosecond ultraviolet laser and electrodeposition processing to enhance specific capacity and cycle stability of LIBs. The synergistic effect of the columnar crystal and through-hole structure for improving electrochemical performances of LIBs assembled with the CC/THCu current collector was investigated. The results show that the complex structure provides spaces for volume expansion and reduces volume variation. When the hole fraction reaches 20%, the weight loss of CC/THCu is 28.41%. The corresponding LIB with the 20% hole fraction CC/THCu shows a high residual capacity rate of 81.2% and enhanced specific capacity (55.9% compared to the LIB with a bare Cu current collector). At a high rate of 1 C, the remaining specific capacity of the LIB with the CC/THCu current collector is better than that with the bare Cu current collector after 200 cycles. The CC/THCu current collector effectively improves the specific capacity and cycle stability of LIBs in contrast to the bare Cu current collector.

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Polyanthraquinone/CNT nanocomposites as cathodes for rechargeable lithium ion batteries

Cited by 15 publications

References 19 publications

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

A Flame-Retardant and Insoluble Inorganic–Organic Hybrid Cathode Material Based on Polyphosphazene with Pyrene-Tetraone for Lithium Ion Batteries

Lightweight Through-Hole Copper Foil as a Current Collector for Lithium-Ion Batteries

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