High-performance Li-ion batteries based on graphene quantum dot wrapped carbon nanotube hybrid anodes

Zhao, Xu; Wu, Yizeng; Wang, Yunsong; Wu, Huaisheng; Yang, Yawei; Wang, Zhipeng; Dai, Linjie; Shang, Yuanyuan; Cao, Anyuan

doi:10.1007/s12274-020-2741-9

Cited by 55 publications

(42 citation statements)

References 49 publications

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“…Graphene quantum dots functionalized CNTs were synthesized by Zhao et al using the hydrothermal process and subsequent heating at 400 and 800 °C in an H 2/Ar atmosphere. 188 The synthesized hybrid GQDs wrapped CNTs (GQDs@CNTs) are used as anode materials for Li-Ion battery applications, and they have a high specific capacity (700 mAhg1 at 100 mAg -1 after 100 cycles) and rate performance. Even at a high current density of 1,000 mA•g -1 , the reversible specific capacity remained at 483 mAh•g -1 after 350 cycles.…”

Section: Lithium Ion Batteriesmentioning

confidence: 99%

Carbon Quantum Dots for Energy Applications: A Review

Rasal

Yadav

et al. 2021

ACS Appl. Nano Mater.

216

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Carbon quantum dots (CQDs) are a class of carbon nanomaterials that have recently gained recognition as current entrants to traditional semiconductor quantum dots (QDs). CQDs have the desirable advantages of low toxicity, environmental friendliness, low cost, photostability, favorable charge transfer with enhanced electronic conductivity, and their comparable easy synthesis protocols. This article examines advancements in CQD research and development, with a focus on their synthesis, functionalization, and energy applications. Initially, various synthesis methods are discussed briefly with pros and cons. Herein, first top-down methods including arc discharge technique, laser ablation technique, plasma treatment, ultrasound synthesis technique, electrochemical technique, chemical exfoliation, and combustion were discussed briefly. The later section presents bottom-up (microwave synthesis, hydrothermal synthesis, thermal pyrolysis, and MOF template-assisted approach) and waste-derived CQDs synthesis methods. The next section is focused on the energy applications of CQDs including supercapacitors, lithium-ion batteries, photovoltaics, hydrogen (HER), and oxygen evolution reaction (OER). Finally, challenges and perspectives in this exciting and promising area are presented.

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Section: Lithium Ion Batteriesmentioning

confidence: 99%

Carbon Quantum Dots for Energy Applications: A Review

Rasal

Yadav

et al. 2021

ACS Appl. Nano Mater.

216

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“…[ 269,270 ] Accordingly, GQDs have drawn rapidly growing attention from various research communities. In addition, their excellent photostability, biocompatibility, and small dimension enable them to exhibit tremendous application prospects in particular in biomedical applications, [ 271 ] sensing, [ 272 ] batteries, [ 273 ] LEDs, [ 274–276 ] and as surfactant for polymerization. [ 270 ] Particularly, the properties of small size, large specific surface area, and abundant edge sites endow GQDs with superiority for electrochemical sensing.…”

Section: Newly Emerging Chiral Graphene Hybrid Materialsmentioning

confidence: 99%

Chiral Graphene Hybrid Materials: Structures, Properties, and Chiral Applications

et al. 2021

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Chirality has become an important research subject. The research areas associated with chirality are under substantial development. Meanwhile, graphene is a rapidly growing star material and has hard‐wired into diverse disciplines. Rational combination of graphene and chirality undoubtedly creates unprecedented functional materials and may also lead to great findings. This hypothesis has been clearly justified by the sizable number of studies. Unfortunately, there has not been any previous review paper summarizing the scattered studies and advancements on this topic so far. This overview paper attempts to review the progress made in chiral materials developed from graphene and their derivatives, with the hope of providing a systemic knowledge about the construction of chiral graphenes and chiral applications thereof. Recently emerging directions, existing challenges, and future perspectives are also presented. It is hoped this paper will arouse more interest and promote further faster progress in these significant research areas.

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“…[33] A diversity of elements can be doped into CDs to form hetero structures to provide excellent interfaces for intercalations between electrode materials and electrolytes, enhancing the reversibility of intercalation reactions; [34] CDs play a protective role in accommodating the volume change during Li alloying/ de-alloying, resulting in dramatically improved reversible capacity and cycling stability. [35] Metal oxides have been widely explored for LIBs ascribing to their abundant electrochemical activities, various redox reactions, high theoretical specific capacitance and stable crystal structure. Fan et al designed and synthesized CuO + Cu + GQD (CCG) triaxial nanowire arrays as a LIBs anode material (Figure 2A).…”

Section: Composites Of Cds and Inorganic Materialsmentioning

confidence: 99%

“…For example, electric conductivity could be elevated by incorporation of CDs to form a composite anode material and thus result in improved rate performance . A diversity of elements can be doped into CDs to form hetero structures to provide excellent interfaces for intercalations between electrode materials and electrolytes, enhancing the reversibility of intercalation reactions; CDs play a protective role in accommodating the volume change during Li alloying/de‐alloying, resulting in dramatically improved reversible capacity and cycling stability …”

Section: Anode Materialsmentioning

confidence: 99%

Applications of Carbon Dots in Next‐generation Lithium‐Ion Batteries

et al. 2020

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Lithium-ion battery (LIB) is a dominating power source in the market owing to its high energy density, good cycling stability and environmental benignity. However, technical challenges remain after years' optimization and commercialization, which are detrimental to the expected performance and lifespan of LIBs. For instance, many cathode materials of LIBs suffer from rapid capacity fading and poor high-rate performance, which are ascribed to self-aggregation, dissolution and fast increased charge transfer resistances during cycles. In terms of the anode materials, low coulombic efficiency, electrolyte depletion and safety issues are common. In addition, the liquid electrolyte systems trigger safety concerns because flammable and volatile organic solvents are necessary. Recently, carbon dots (CDs) emerge as a sound material to address those challenges of LIBs, and also present promising applications in bioimaging, fluorescence sensing, photo/electro-catalysis, and electroluminescence. This review will overlook the state-of-the-art advances in the employment of CDs based composites to build cathode/anode materials and electrolytes in LIBs, through tailoring the internal structures and the surface states of electrode materials, and being additives in electrolyte, to improve the performances of the next-generation LIBs. The major challenges and opportunities in front of CDs in LIBs will be outlined and discussed in detail.

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High-performance Li-ion batteries based on graphene quantum dot wrapped carbon nanotube hybrid anodes

Cited by 55 publications

References 49 publications

Carbon Quantum Dots for Energy Applications: A Review

Carbon Quantum Dots for Energy Applications: A Review

Chiral Graphene Hybrid Materials: Structures, Properties, and Chiral Applications

Applications of Carbon Dots in Next‐generation Lithium‐Ion Batteries

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