Awl‐like HfC nanowires grown on carbon cloth via Fe‐catalyzed in a polymer pyrolysis route

Fu, Yanqin; Zhang, Yulei; Yin, Xiaowei; Li, Tao; Zhang, Jian

doi:10.1111/jace.17073

Cited by 13 publications

(8 citation statements)

References 24 publications

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“…Ceramic nanowires (NWs), due to their high specific surface area, good thermal/chemical stability, and outstanding mechanical properties, have been widely investigated in many fields, such as field emission, reinforcement in composites and coatings, and electromagnetic shielding and absorption. [40,41] Recently, free-standing and ultralight ceramic nanowires membrane/film/aerogel have been developed, which are considered as idea candidates for flexible and lightweight conductive collectors. However, the resistance of ceramic nanowires is relatively high, which may restrict their potential application in flexible ASC devices.…”

Section: Introductionmentioning

confidence: 99%

All Si₃N₄ Nanowires Membrane Based High‐Performance Flexible Solid‐State Asymmetric Supercapacitor

Yin

Han

et al. 2021

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Recently, much attention has been drawn in the development of flexible energy storage devices due to the increasing demands for flexible/portable electronic devices with high energy density, low weight, and good flexibility. Herein, vertically oriented graphene nanosheets (VGNs) are in situ fabricated on the surface of free‐standing and flexible Si3N4 nanowires (NWs) membrane by plasma‐enhanced chemical vapor deposition (PECVD), which are directly used as flexible nanoscale conductive substrates. NiCo2O4 hollow nanospheres (HSs) and FeOOH amorphous nanorods (NRs) are finally prepared on Si3N4NWs@VGNs, which are served as the positive and negative electrodes, respectively. Profiting from the structural merits, the synthesized Si3N4NWs@VGNs@NiCo2O4HSs and Si3N4NWs@VGNs@FeOOHNRs membrane electrodes exhibit remarkable electrochemical performance. Using Si3N4NWs membrane as the separator, the assembled all Si3N4NWs membrane‐based flexible solid‐state asymmetric supercapacitor (ASC) with a wide operating potential window of 1.8 V yields the outstanding energy density of 96.3 Wh kg−1, excellent cycling performance (91.7% after 6000 cycles), and good mechanical flexibility. More importantly, this work provides a rational design strategy for the preparation of flexible electrode materials and broadens the applications of Si3N4NWs in the field of energy storage.

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Section: Introductionmentioning

confidence: 99%

All Si₃N₄ Nanowires Membrane Based High‐Performance Flexible Solid‐State Asymmetric Supercapacitor

Yin

Han

et al. 2021

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“…[88,222] As investigated by Fu at al., the morphology of HfCNWs on carbon fibers could be controlled by adjusting the kinds of catalysts (Ni and Fe). [88,222] Through the pyrolysis of polymer precursor method, Fu et al introduced HfCNWs into carbon fiber performs and prepared HfCNWs reinforced C/C composites. [43,54,92] Benefiting from the excellent mechanical properties, the HfCNWs-C/C composites achieved the improved mechanical performance.…”

Section: Hfc Nanowires Reinforced C/c Compositesmentioning

confidence: 99%

“…As shown in Figure 21c–e, a pyrolysis of polymer precursor method was also proposed to prepare HfCNWs. [ 88,222 ] As investigated by Fu at al., the morphology of HfCNWs on carbon fibers could be controlled by adjusting the kinds of catalysts (Ni and Fe). [ 88,222 ] Through the pyrolysis of polymer precursor method, Fu et al.…”

Section: Ultrahigh Temperature Ceramic Nanowires Reinforced C/c Compo...mentioning

confidence: 99%

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Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Yin

Han

Liu

et al. 2022

Adv Funct Materials

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Carbon fiber reinforced carbon matrix (carbon/carbon, C/C) composites have become the promising candidates for high‐temperature thermal structure materials in aerospace fields, owning to a series of excellent structural merits. However, for aculeate or thin‐walled C/C composites, due to the fact that continuous carbon fibers are cut off during the machining process and the amount of residual carbon fibers is limited, carbon matrix cannot be effectively strengthened just by using carbon fibers, resulting in a sharp decline in mechanical performance. Furthermore, the rapid development of aerospace vehicles requires that C/C composites not only have excellent mechanical properties but also possess multifunctional properties. To effectively solve these problems and meet the increasing demands, various 1D nanostructures as nanoreinforcements have been introduced into C/C composites, achieving the great improvement in mechanical and functional properties. In this review, the state‐of‐the‐art research activities regarding different 1D nanoreinforcements applied in C/C composites are systematically summarized. Finally, this review is concluded and the future research prospects are proposed. This review provides the “1D nanoreinforcements” strategy to further improve the properties of C/C composites, which could be widely used for reference by researchers in the fields of different fiber/matrix composites.

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“…The vapor-liquid-solid (VLS) crystal growth mechanism and its related growth model are commonly adopted to synthesize a range of the 1D nanostructures [10,12,17], and the 1D HfC fabricated by chemical vapor deposition and thermal pyrolysis is also attributed to following the VLS growth model [17,18]. At present, carbon nanotubes (CNTs) have been employed as the templates for fabricating HfC nanowires, which were first proposed by Li et al [19], and the as-prepared HfC nanowires exhibit to be polycrystalline with numerous defects.…”

Section: Introduction mentioning

confidence: 99%

Microstructure and evolution of hafnium carbide whiskers via polymer-derived ceramics: A novel formation mechanism

Fu¹,

Zhang²,

Yan³

et al. 2023

Journal of Advanced Ceramics

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Polymer-derived ultra-high-temperature ceramic (UHTC) nanocomposites have attracted growing attention due to the increasing demands for advanced thermal structure components in aerospace. Herein, hafnium carbide (HfC) whiskers are successfully fabricated in carbon fiber preforms via the polymer-derived ceramic (PDC) method. A novel carbon nanotube (CNT) template growth mechanism combined with the PDC method is proposed in this work, which is different from the conventional vapor-liquid-solid (VLS) mechanism that is commonly used for polymer-derived nanostructured ceramics. The CNTs are synthesized and proved to be the templates for fabricating the HfC whiskers, which are generated by the released low-molecular-weight gas such as CO, CO 2 , and CH 4 during the pyrolysis of a Hf-containing precursor. The formed products are composed of inner single crystal HfC whiskers that are measured to be several tens of micrometers in length and 100-200 nm in diameter and outer HfC/HfO 2 particles. Our work not only proposes a new strategy to prepare the HfC whiskers, but also puts forward a new thinking of the efficient utilization of a UHTC polymer precursor.

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Awl‐like HfC nanowires grown on carbon cloth via Fe‐catalyzed in a polymer pyrolysis route

Cited by 13 publications

References 24 publications

All Si₃N₄ Nanowires Membrane Based High‐Performance Flexible Solid‐State Asymmetric Supercapacitor

All Si₃N₄ Nanowires Membrane Based High‐Performance Flexible Solid‐State Asymmetric Supercapacitor

Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Microstructure and evolution of hafnium carbide whiskers via polymer-derived ceramics: A novel formation mechanism

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Awl‐like HfC nanowires grown on carbon cloth via Fe‐catalyzed in a polymer pyrolysis route

Cited by 13 publications

References 24 publications

All Si3N4 Nanowires Membrane Based High‐Performance Flexible Solid‐State Asymmetric Supercapacitor

All Si3N4 Nanowires Membrane Based High‐Performance Flexible Solid‐State Asymmetric Supercapacitor

Recent Progress in 1D Nanostructures Reinforced Carbon/Carbon Composites

Microstructure and evolution of hafnium carbide whiskers via polymer-derived ceramics: A novel formation mechanism

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All Si₃N₄ Nanowires Membrane Based High‐Performance Flexible Solid‐State Asymmetric Supercapacitor

All Si₃N₄ Nanowires Membrane Based High‐Performance Flexible Solid‐State Asymmetric Supercapacitor