Scalable Template Synthesis of Resorcinol–Formaldehyde/Graphene Oxide Composite Aerogels with Tunable Densities and Mechanical Properties

Wang, Xing; Lu, Lei‐Lei; Yu, Zhi‐Long; Xu, Xue-Wei; Zheng, Ya‐Rong; Yu, Shu‐Hong

doi:10.1002/anie.201410668

Cited by 179 publications

(101 citation statements)

References 45 publications

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“…It can even withstand long‐term compression for 30 000 cycles, with a high stress retention of 79.1% and height reduction of only 11.4% (Figure 4d,e). The fatigue resistance of C‐AL/CNF‐5 is superior to those of graphene‐derived aerogels,33–37 GO/CNT composite aerogel,38 carbonaceous nanofibrous aerogel,39 MXene‐derived aerogels,40,41 and so on42,43 (Figure 4f and Table S3, Supporting Information). Generally, energy loss coefficient as a result of sliding friction among carbon unites is an important parameter to evaluate the structural stability of carbon materials.…”

Section: Resultsmentioning

confidence: 99%

Wood‐Derived Lightweight and Elastic Carbon Aerogel for Pressure Sensing and Energy Storage

Chen

Zhuo

et al. 2020

Adv Funct Materials

204

142

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Lightweight and elastic carbon materials have attracted great interest in pressure sensing and energy storage for wearable devices and electronic skins. Wood is the most abundant renewable resource and offers green and sustainable raw materials for fabricating lightweight carbon materials. Herein, a facile and sustainable strategy is proposed to fabricate a wood-derived elastic carbon aerogel with tracheid-like texture from cellulose nanofibers (CNFs) and lignin. The flexible CNFs entangle and assemble into an interconnected framework, while lignin with high thermal stability and favorable stiffness prevents the framework from severe structural shrinkage during annealing. This strategy leads to an ordered tracheid-like structure and significantly reduces the thermal deformation of the CNFs network, producing a lightweight and elastic carbon aerogel. The wood-derived carbon aerogel exhibits excellent mechanical performance, including high compressibility (up to 95% strain) and fatigue resistance. It also reveals high sensitivity at a wide working pressure range of 0-16.89 kPa and can detect human biosignals accurately. Moreover, the carbon aerogel can be assembled into a flexible and free-standing all-solid-state symmetric supercapacitor that reveals satisfactory electrochemical performance and mechanical flexibility. These features make the wood-derived carbon aerogel highly attractive for pressure sensor and flexible electrode applications.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201910292. important applications in wearable sensors, electronic skins, and flexible energy storage devices. Although carbon aerogels with good mechanical performances can be achieved from nanocarbon unites, their carbon precursors are nonrenewable, and the synthesis process of CNT, graphene, or their aerogels is high-cost and complicated.Considering the natural abundance, renewability, environmental friendliness, and low cost, biomass has been regarded as a renewable and sustainable carbon precursor for fabricating carbon aerogels. Up to now, several biomass-derived carbon aerogels have been successfully developed from gelatin, [16] winter melon, [17] protein, [18] bacterial cellulose, [19] and raw cotton. [20] However, those carbon aerogels show poor compressibility, elasticity, and fatigue resistance owing to the intrinsic random porous architecture and severe volume shrinkage at annealing or carbonization. Wood, as one of the most abundant biomass resources, demonstrates hierarchical tracheid structure that is composed of CNFs and amorphous matrix (lignin and hemicelluloses). [21] Owing to the compact structure (large amounts of additives and various interaction among tracheids or CNFs), natural wood is rigid and the tracheids are hard to be compressed and easily collapsed. Therefore, fabricating compressible and elastic conductive carbon aerogel from original wood tracheids is challenging. To solve this problem, Hu et al. [22] put forward a "top-down" stra...

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Section: Resultsmentioning

confidence: 99%

Wood‐Derived Lightweight and Elastic Carbon Aerogel for Pressure Sensing and Energy Storage

Chen

Zhuo

et al. 2020

Adv Funct Materials

204

142

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“…The interface in the nacre induces multiple toughening mechanism, such as mineral bridging, nanoasperities shearing, organic gluing, and tablet interlocking, [1] as shown in Figure 3. [122][123][124][125][126][127][128] In addition, different interface interactions could be reasonably combined to result in synergistic effect, [111,[129][130][131][132][133][134][135][136][137][138][139] which is similar to the multiple interface interactions in nacre. [48,75,[91][92][93][94] The interfacial crosslinking strategies contain hydrogen bonding, [95][96][97][98][99][100][101][102][103][104][105][106][107][108][109][110][111][112][113][114] ionic bonding, …”

Section: Interfacial Architecture Of Biological Materialsmentioning

confidence: 98%

Role of Interface Interactions in the Construction of GO‐Based Artificial Nacres

Wan

Cheng

2018

Adv Materials Inter

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The hierarchical interfacial architecture of nacre inspires the fabrication of novel high performance graphene‐based nanocomposites. Graphene has great promise for applications in aerospace and especially for flexible electronic devices, etc., due to its remarkable mechanical and electrical properties. Thus, it is significant to summarize the role of interface interactions in the construction of nacre‐inspired graphene‐based nanocomposites, which is the distinctive characteristic and important scientific progress of the review. This review first makes a comparison for the interfacial architecture of above biological materials and finds inspiration from nacre to design the interface in graphene‐based nanocomposites, which contains single interface interaction, synergistic interface interactions, and synergistic building blocks. Then, the focus is attached to the effect of different interfacial design strategies on the mechanical and electrical properties of state‐of‐the‐art GO‐based artificial nacres (GANs), including 1D fibers, 2D films, and 3D bulk materials. Additionally, the multifunctional GANs with such functions as fatigue resistance, fire retardant property, and smart nanogating, etc. are also discussed. Moreover, some potential applications and corresponding challenges and solutions of GANs are detailedly summarized. Finally, from the views of theoretical simulation and experimental research, a perspective on the roadmap of GANs in the future is also proposed.

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“…18, [59][60][61][62] Figure 7 shows the separating process of the mixture of 20 mL water and 20 mL kerosene by using the 2D superhydrophobic non-woven fabric as filtrate membranes. 18, [59][60][61][62] Figure 7 shows the separating process of the mixture of 20 mL water and 20 mL kerosene by using the 2D superhydrophobic non-woven fabric as filtrate membranes.…”

Section: The Oil/water Separation Reusability and Separation Efficiencymentioning

confidence: 99%

Facile fabrication of robust superhydrophobic porous materials and their application in oil/water separation

et al. 2015

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Abstract：Utilizing superhydrophobic porous materials in oil/water separation has attracting increasing research interest, however, most of these materials are usually complicated to fabricate or easily lose their functions in harsh circumstance. In this study, dispersion of poly [(3,3,3-trifluoropropyl)methylsiloxane] (PTFPMS) micro-nano aggregations in acetone/water was facially prepared via a simple phase separation method. The aggregations can be easily coated on the skeletons of various 2D and 3D porous substrates, endowing the porous materials superhydrophobicity. The prepared superhydrophobic materials show excellent resistance to chemical erosion, mechanical abrasion, and high temperature (up to 400 ˚C). The robust superhydrophobicity promise the application of the resultant porous materials in the harsh environment, and examples of using these superhydrophobic porous materials to separate oil/water mixtures have been demonstrated. This simple and universal method is suitable for large-scale preparation of porous materials with robust superhydrophobicity.

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Scalable Template Synthesis of Resorcinol–Formaldehyde/Graphene Oxide Composite Aerogels with Tunable Densities and Mechanical Properties

Cited by 179 publications

References 45 publications

Wood‐Derived Lightweight and Elastic Carbon Aerogel for Pressure Sensing and Energy Storage

Wood‐Derived Lightweight and Elastic Carbon Aerogel for Pressure Sensing and Energy Storage

Role of Interface Interactions in the Construction of GO‐Based Artificial Nacres

Facile fabrication of robust superhydrophobic porous materials and their application in oil/water separation

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