Highly conductive, mechanically strong graphene monolith assembled by three-dimensional printing of large graphene oxide

Ma, Jianhua; Wang, Peng; Dong, Lei; Ruan, Yingbo; Lu, Hongbin

doi:10.1016/j.jcis.2018.08.096

Cited by 47 publications

(66 citation statements)

References 37 publications

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“…Therefore, graphene monolith possesses a higher electrical conductivity of 5.5 × 10 4 S m −1 by annealing at 3073 K (Figure 4h), superior to graphene‐based monolith fabricated by compressing graphene aerogel (378 S m −1 ) or 3D printing (41.1 S m −1 ). [ 20,32 ]…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Graphene‐Based Self‐Assembly Monoliths through Reversible Fluorination and Defluorination Strategy

Fan

Wang

Liu

et al. 2020

Adv Materials Inter

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The low bending stiffness and inferior self‐lubricating ability of graphene bring about flexible nanosheet and poor mobility, greatly restricting its well‐organized self‐assembly in direct solid‐phase molding. Herein, abundant fluorine atoms are introduced onto graphene nanosheet to obtain fluorinated graphene (FG). A direct dry‐compression molding achieves to rapidly fabricate highly compact FG monolith under room temperature. Tracing origins, the enhanced bending stiffness guarantees relatively flat FG nanosheet and excellent self‐lubricating ability actuates flat FG nanosheets to automatically slip, thereby accomplishing well‐organized and compact layer‐by‐layer stacking with interlock structure. Whereafter, highly compact graphene monolith is finally obtained by high‐temperature annealing, because interlock structure in FG monolith restricts graphene′s deformations during defluorination. Obtained graphene monolith owns a high conductivity of 5.5 × 104 S m−1 and compression strength of 77 MPa, while graphene without above process only forms fluffy foam with a low conductivity of 6.8 S m−1. Interestingly, transitional FG monolith presents a higher compression strength of 102 MPa, ultralow dielectric constant of 1.72 and prolongable chemical reactivity for preparing “Janus” monolith. Designing reversible fluorination and defluorination strategy offers an unexplored avenue to effectively manufacture high‐quality graphene‐based monoliths.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Graphene‐Based Self‐Assembly Monoliths through Reversible Fluorination and Defluorination Strategy

Fan

Wang

Liu

et al. 2020

Adv Materials Inter

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“…Improving the quality of soil and crops using appropriate nanoparticles Adapted from[148][149][150][151].…”

mentioning

confidence: 99%

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

et al. 2019

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Nutrient deficiency in food crops is seriously affecting human health, especially those in the rural areas, and nanotechnology may become the most sustainable approach to alleviating this challenge. There are several ways of fortifying the nutrients in food such as dietary diversification, use of drugs and industrial fortification. However, the affordability and sustainability of these methods have not been completely achieved. Plants absorb nutrients from fertilizers, but most conventional fertilizers have low nutrient use and uptake efficiency. Nanofertilizers are, therefore, engineered to be target oriented and not easily lost. This review surveys the effects of the addition of macro- and nanonutrients to soil, the interaction, and the absorption capability of the plants, the environmental effect and food content of the nutrients. Most reports were obtained from recent works, and they show that plants nutrients could be enriched by applying nanoparticulate nutrients, which are easily absorbed by the plant. Although there are some toxicity issues associated with the use of nanoparticles in crop, biologically synthesized nanoparticles may be preferred for agricultural purposes. This would circumvent the concerns associated with toxicity, in addition to being pollution free. This report, therefore, offers more understanding on the application of nanotechnology in biofortification of plant nutrients and the future possibilities offered by this practice. It also highlights some of the ills associated with the introduction of nanomaterials into the soil for crop’s improvement.

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“…The 3D printed structure of the cathode is intended to improve Li + /e − transport and active material loading . At the same time, a customized 3D structure can be obtained.…”

Section: Resultsmentioning

confidence: 99%

3D Printed High‐Loading Lithium‐Sulfur Battery Toward Wearable Energy Storage

Chen

Jiang

et al. 2020

Adv Funct Materials

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Wearable electronic devices are the new darling of consumer electronics, and energy storage devices are an important part of them. Here, a wearable lithium‐sulfur (Li‐S) bracelet battery using three‐dimensional (3D) printing technology (additive manufacturing) is designed and manufactured for the first time. The bracelet battery can be easily worn to power the wearable device. The “additive” manufacturing characteristic of 3D printing provides excellent controllability of the electrode thickness with much simplified process in a cost‐effective manner. Due to the conductive 3D skeleton providing interpenetrating transmission paths and channels for electrons and ions, the 3D Li‐S battery can provide 505.4 mAh g−1 specific capacity after 500 cycles with an active material loading as high as 10.2 mg cm−1. The practicality is illustrated by wearing the bracelet battery on the wrist and illuminating the red light‐emitting diode. Therefore, the bracelet battery manufactured by 3D printing technology can address the needs of the wearable power supply.

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Highly conductive, mechanically strong graphene monolith assembled by three-dimensional printing of large graphene oxide

Cited by 47 publications

References 37 publications

Fabrication of Graphene‐Based Self‐Assembly Monoliths through Reversible Fluorination and Defluorination Strategy

Fabrication of Graphene‐Based Self‐Assembly Monoliths through Reversible Fluorination and Defluorination Strategy

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

3D Printed High‐Loading Lithium‐Sulfur Battery Toward Wearable Energy Storage

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