Graphene aerogels for efficient energy storage and conversion

Mao, Jiajun; Iocozzia, James; Huang, Jianying; Meng, Kai; Lai, Yuekun; Lin, Zhiqun

doi:10.1039/c7ee03031b

Cited by 543 publications

(248 citation statements)

References 257 publications

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“…candidates. [1][2][3] Meanwhile, the advanced electrochemical energy storage and conversion systems have showed a great significance in the high-efficiency utilization of these sustainable energy. [4][5][6] Owing to the low cost and rich abundance of sodium resource, the rechargeable Na-ion batteries have attracted more and more attention for large-scale stationary energy storage.…”

Section: Doi: 101002/aenm201903966mentioning

confidence: 99%

“…With the rapid increases of energy demand and serious environmental issues caused by conventional fossil fuel, the renewable sustainable clean energy, such as wind, water, geothermal energy, has been widely regarded as most promising candidates . Meanwhile, the advanced electrochemical energy storage and conversion systems have showed a great significance in the high‐efficiency utilization of these sustainable energy .…”

mentioning

confidence: 99%

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A Flexible Solid Electrolyte with Multilayer Structure for Sodium Metal Batteries

Ling

Yue

et al. 2020

Advanced Energy Materials

118

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Solid electrolytes (SEs) can potentially address the inherent safety problems of conventional organic liquid electrolytes. However, their low ionic conductivity and large interfacial resistance limit the practical applications of SEs. Here, a flexible solid electrolyte with a multilayer structure is fabricated by the UV curing of an interpenetrating network of poly(ether‐acrylate) (ipn‐PEA) in the Na3Zr2Si2PO12/poly(vinylidene fluoride‐hexafluoropropylene) porous skeleton (NZSP/PVDF‐HFP), exhibiting a high Na+ transference number of 0.63 and a suitable ionic conductivity of above 10−4 S cm−1 at 60 °C. In addition, due to the unique structure of the internal rigidity and external flexibility, the composite solid electrolyte can effectively mitigate interfacial ion transfer issues while guaranteeing a certain mechanical strength, and largely inhibiting the formation of dendrite and dead sodium. The solid sodium metal batteries using Na3V2(PO4)3 (NVP) as a cathode possess a discharge capacity of 85 mA h g−1 after 100 cycles at 0.5 C, and achieve above 90% of capacity retention rate during 100 cycles at 0.1 C for Na2/3Ni1/3Mn1/3Ti1/3O2 (NTMO) at 60 °C. The flexible solid electrolyte with multilayer structure shows a great advantage for managing the ionic conductivity and interface resistance problem, suggesting a promise as a practical sodium metal battery.

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Section: Doi: 101002/aenm201903966mentioning

confidence: 99%

mentioning

confidence: 99%

A Flexible Solid Electrolyte with Multilayer Structure for Sodium Metal Batteries

Ling

Yue

et al. 2020

Advanced Energy Materials

118

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“…This result doesn't accord with the theoretical capacity of composite materials by thermodynamic calculation, but in accordance with other graphene aerogel assisted composites . It is concluded that the extra capacity is mainly originated from the high surface area of graphene aerogel which is favorable for Li‐ion storage . Consequently, contributions of graphene aerogel and iron oxide nanotubes to the capacity are both indispensable in the charging and discharging process.…”

Section: Resultsmentioning

confidence: 53%

Hollow α‐Fe₂O₃ Nanotubes Embedded in Graphene Aerogel as High‐Performance Anode Material for Lithium‐Ion Batteries

et al. 2019

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Hematite, with the higher theoretical capacity, as one of the most promising alternatives attract great attention in lithium‐ion batteries (LIBs). However, it is suffers from severe volume expansion and shrinkage during the insertion and extraction of Li ions. Here novel 3D graphene aerogel load with hollow Fe2O3 nanotubes was synthesized with the help of polyvinyl pyrrolidone (PVP) and N‐Methyl pyrrolidone (NMP) by a simple hydrothermal method. Serving as an anode material for LIBs, this composite manifested great cycle performance of high columbic efficiency (97%∼99%), high specific discharged capacity (1512 mAh g−1 at 100 mA g−1) and high rate capability (280 mAh g−1 at 5 A g−1). The superior performance of the material mainly depends on the interaction of graphene sheets and hollow Fe2O3 nanotubes. The 3D framework affords shorter diffusion distance for Li ions and enormous area to accommodate the volume expansion during the insertion/extraction of Li ions. Herein, this composite demonstrates a new way to modify the morphology of Fe2O3 and displays high efficiency and good performance as the anode of LIBs.

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“…There is a rather limited number of materials that can be prepared as aeromaterials, but this number is continuously increasing, especially for carbon‐based nanomaterials, such as carbon nanotubes, graphene, aerographite, etc . This tremendous development of aeromaterials is related to an impressive number of applications in energy storage and conversion (e.g., supercapacitors and solar cells), environmental protection (e.g., large absorption of crude oil, sensors), biological applications (e.g., drug delivery, tissue engineering, implantable devices, and biosensing) . An interesting application is electromagnetic shielding where ultra‐lightweight aeromaterials could replace the heavy metals used for this purpose in many industries, such as automotive and aerospace ones .…”

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confidence: 99%

Sensing up to 40 atm Using Pressure‐Sensitive Aero‐GaN

Dragoman

Ciobanu

Shree

et al. 2019

Physica Rapid Research Ltrs

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This work reports on the fabrication and characterization of a robust pressure sensor based on aero‐GaN. The ultraporous aeromaterial consists of GaN interconnected hollow micro‐tetrapods with the wall thickness of about 70 nm. The inner surface of hollow micro‐tetrapods contains an ultrathin film of ZnO genetically related to the sacrificial template used for epitaxial deposition of GaN. The pressure sensing measurements disclose a nearly linear dependence of the electrical conductance versus applied pressure up to 40 atm, a stable state signal being attained after an interval of about 10 s.

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Graphene aerogels for efficient energy storage and conversion

Abstract: Concerns over air quality reduction and energy crisis resulting from rapid consumption of limited fossil fuels have driven the development of clean and renewable energy sources.

Cited by 543 publications

References 257 publications

A Flexible Solid Electrolyte with Multilayer Structure for Sodium Metal Batteries

A Flexible Solid Electrolyte with Multilayer Structure for Sodium Metal Batteries

Hollow α‐Fe₂O₃ Nanotubes Embedded in Graphene Aerogel as High‐Performance Anode Material for Lithium‐Ion Batteries

Sensing up to 40 atm Using Pressure‐Sensitive Aero‐GaN

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Graphene aerogels for efficient energy storage and conversion

Abstract: Concerns over air quality reduction and energy crisis resulting from rapid consumption of limited fossil fuels have driven the development of clean and renewable energy sources.

Cited by 543 publications

References 257 publications

A Flexible Solid Electrolyte with Multilayer Structure for Sodium Metal Batteries

A Flexible Solid Electrolyte with Multilayer Structure for Sodium Metal Batteries

Hollow α‐Fe2O3 Nanotubes Embedded in Graphene Aerogel as High‐Performance Anode Material for Lithium‐Ion Batteries

Sensing up to 40 atm Using Pressure‐Sensitive Aero‐GaN

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Product

Resources

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Hollow α‐Fe₂O₃ Nanotubes Embedded in Graphene Aerogel as High‐Performance Anode Material for Lithium‐Ion Batteries