Sequential Superassembly of Nanofiber Arrays to Carbonaceous Ordered Mesoporous Nanowires and Their Heterostructure Membranes for Osmotic Energy Conversion

Xie, Lei; Zhou, Shan; Liu, Jinrong; Qiu, Beilei; Liu, Tianyi; Liang, Qirui; Zheng, Xiaozhong; Li, Ben; Zeng, Jie; Yan, Miao; He, Yanjun; Zhang, Xin; Zeng, Hui; Ma, Ding; Chen, Pu; Liang, Kang; Jiang, Lei; Wang, Yong; Zhao, Dongyuan; Kong, Biao

doi:10.1021/jacs.1c00547

Cited by 82 publications

(58 citation statements)

References 60 publications

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“…Herein, we developed a super-assembly strategy 32–34 for the direct fabrication of freestanding graphene oxide/aramid nanofiber (GO/ANF/GO) composite membranes via simple vacuum-assisted filtration. The super-assembly interactions between the GO nanosheets and ANF nanofibers include hydrogen bonding and π–π interaction.…”

Section: Introductionmentioning

confidence: 99%

Super-assembly of freestanding graphene oxide-aramid fiber membrane with T-mode subnanochannels for sensitive ion transport

Zhou

Xie

Yan

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Super-assembly of freestanding graphene oxide-aramid fiber membrane with T-mode subnanochannels for sensitive ion transport

Zhou

Xie

Yan

et al. 2022

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Section: Films Assembly Through Macroscale Methodsmentioning

confidence: 99%

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Interfacial Assembly of Functional Mesoporous Carbon‐Based Materials into Films for Batteries and Electrocatalysis

Xie

et al. 2022

Adv Materials Inter

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However, to better integrate those energy sources and applications, proper energy storage and conversion systems are vital. Tremendous efforts have been made to the development of energy systems, mainly including batteries (e.g., lithium batteries, fuel cells) and electrocatalysis (e.g., solid electrolyte, water splitting). [11][12][13][14][15] Nevertheless, these energy systems still face some tough problems and challenges. To realize large scale production, low cost and high efficiency, the development of advanced materials in these energy systems is crucial and indispensable.Porous materials, due to their unique properties and a wide range of applications, have always been a hot topic in research. [16][17][18][19][20] According to the International Union of Pure and Applied Chemistry (IUPAC), porous material can be divided into three categories by their pore sizes. That is, microporous when pore size is below 2 nm, mesoporous (2-50 nm) and macroporous (>50 nm). Among them, mesoporous carbon materials have been regarded as promising candidates when applied in many energy systems owing to their large surface area and pore volumes, tunable pore size and channels. [21][22][23] All of these characteristics have their own merits, which can address certain issues in different energy storage and conversion systems. [24][25][26][27] First of all, the large surface area, especially when combined with particular functional groups or certain atoms doping, can provide much more reaction sites and active absorption sites during surface or interface-related reaction such as electrocatalytic process. [28,29] Secondly, large pore volumes can not only accommodate more guest materials as an excellent host but also buffer the volume change and relax the strain during repeated electrochemical reactions in many batteries. [30] Thirdly, the tunable pore size and channels can accelerate ions and intermediate species transport, which improve the reaction rate and assure the complete conversion of reaction. [31,32] Moreover, these mesopores with appropriate size have physical and chemical confinement effect to avoid the loss or aggregation of active materials in some energy storage devices and catalytic processes.On the other hand, in recent years, many freestanding 2D films based on graphene, black phosphorus or transition metal carbide MXenes have been synthesized. [33][34][35] 2D films,

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“…Due to their extremely large specific surface areas, large pore volumes, high electrical conductivities, excellent physical properties, and high chemical stabilities, porous carbons (PCs) hold promise for use in a wide range of technological applications, including toxic gas adsorption, photonic materials, and energy conversion and storage devices. − PCs are most commonly synthesized using a template, which can be a hard template − or a soft template, − although other methods are also known. , The templates are used to orient pores and direct them to form in a hierarchical manner via processes that includes self-assembly or other advanced forms of controlled physical arrangement . Despite these advances, templated methods have several shortcomings.…”

Section: Introductionmentioning

confidence: 99%

Agarose-Based Hierarchical Porous Carbons Prepared with Gas-Generating Activators and Used in High-Power Density Supercapacitors

et al. 2021

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Due to their high surface areas and large pore volumes, porous carbons (PCs) are valuable materials for use as electrodes in energy storage and conversion devices. Biomass is an ideal precursor for the preparation of PCs in part because it is sustainable and eco-friendly. Herein, new methodology for converting agarose, a naturally occurring type of biomass that forms robust hydrogels, into PCs with tunable pore structures and high electrochemical performance is described. The synthetic process is straightforward and entails heating a gel that is composed of agarose and potassium oxalate (K 2 C 2 O 4 ). Since the salt transforms into gaseous byproducts at elevated temperatures, the decomposition process was harnessed to create activated, open pores as the hydrogel underwent carbonization. For example, a PC with a surface area of 1754.9 m 2 g −1 and a pore volume of 2.643 cm 3 g −1 was obtained by heating a mixture of agarose and K 2 C 2 O 4 in a 1:3 weight ratio at 700 °C. The material was subsequently used as the electrode material in a supercapacitor and found to display a specific capacitance of 166.0 F g −1 at 0.125 A g −1 . Varying the quantity of added K 2 C 2 O 4 resulted in predictable changes in porosity and thus offered a means to tune the textural properties and the electrochemical performance of the PCs. For example, changing the feed ratio of agarose to K 2 C 2 O 4 to 1:6 afforded a PC that exhibited a high persistent specific capacitance (64.1 F g −1 at 5 A g −1 after 10,000 cycles) and a high-power density (20 kW kg −1 at 10 A g −1 ).

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Sequential Superassembly of Nanofiber Arrays to Carbonaceous Ordered Mesoporous Nanowires and Their Heterostructure Membranes for Osmotic Energy Conversion

Cited by 82 publications

References 60 publications

Super-assembly of freestanding graphene oxide-aramid fiber membrane with T-mode subnanochannels for sensitive ion transport

Super-assembly of freestanding graphene oxide-aramid fiber membrane with T-mode subnanochannels for sensitive ion transport

Interfacial Assembly of Functional Mesoporous Carbon‐Based Materials into Films for Batteries and Electrocatalysis

Agarose-Based Hierarchical Porous Carbons Prepared with Gas-Generating Activators and Used in High-Power Density Supercapacitors

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