JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xian Zhang,Yuhang Yang,Jiage Yu,Ziming Li,Youyong Zhang,Xiangsheng Xie,Zhongping Zhang,Yunfeng Guan,Yuqiang Pi,Feng Wang,Yu Ding
Various strategies have shown promise for addressing the volume expansion issue of silicon (Si)-based anode materials and enhancing their electrochemical performance, such as nanocrystallization and the use of carbon-encapsulated nano-Si particles. However, the agglomeration of nano-Si particles remains a challenge, limiting their full potential. In this study, Zn-MOF-74 was employed to improve the dispersion of nano-Si powder in a carbon source. Subsequently, polyacrylonitrile was used in an electrospinning process to prepare an effective coating, followed by heat treatment to prepare nitrogen-doped Si/C flexible anode composites. The influence of the coating degree on electrochemical performance was investigated, and the Si/C-MOF-74/CNFs-2 composite prepared with 30.3 wt% nano-Si particles exhibited specific discharge capacities of 1030.1 mAh·g −1 after 150 cycles at 0.1 A·g −1 , 610.8 mAh·g −1 after 300 cycles at 1.0 A·g −1 , and 409.1 mAh·g −1 after 300 cycles at 2.0 A·g −1 .
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DOI
高影响因子
Frontiers of Materials Science
·
2022
·Vol. 16
·期 4
·1-13
·
IF 2.612
Chen Fenglan,Liu Xin,Wang Zhengya,Tie Shengnian,Wang Chang-An
As a kind of essential hydrated salt phase change energy storage materials, mirabilite with high energy storage density and mild phase-transition temperature has excellent application potential in the problems of solar time and space mismatch. However, there are some disadvantages such as supercooling, substantial phase stratification and leakage problem, limiting its further applications. In this work, for the preparation of shaped mirabilite phase change materials (MPCMs), graphene (GO), sodium carboxymethyl cellulose (CMC), and carbon nanofibers (CNFs) were used as starting materials to prepare lightweight CMC/rGO/CNFs carbon aerogel (CGCA) as support with stable shape, high specific surface area, and well-arranged hierarchically porous structure. The results show that CGCA has regular layered plentiful pores and stable foam structure, and the pore and sheet interspersed structure in CGCA stabilizes PCMs via capillary force and surface tension. The hydrophilic aerogels supported MPCMs decrease mirabilite leaking and reduce supercooling to around 0.7–1 °C. The latent heats of melting and crystallization of CGCA-supported mirabilite phase change materials (CGCA-PCMs) are 157.1 and 114.8 J·g −1 , respectively. Furthermore, after 1500 solid—liquid cycles, there is no leakage, and the retention rate of crystallization latent heat is 45.32%, exhibiting remarkable thermal cycling stability.
研究领域:
材料科学
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能源工程
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高影响因子
Materials Chemistry Frontiers
·
2022
·Vol. 6
·期 21
·3213-3224
·
IF 8.683
Wenfang Miao,Feirong Huang,Xiaochen Shen,Shaopeng Li,Xingru Cao,Xuefeng Zhang,Jieyi Yu,Xinglong Dong
The development of high-efficiency, stable, and low-cost Fe–N–C electrocatalysts for the oxygen reduction reaction (ORR) has attracted considerable attention. Herein, a stable atomically dispersed Fe–Nx-based catalyst was synthesized from a hierarchical structure involving carbon nanofiber (CNF)-supported zeolitic-imidazolate-framework-8 (ZIF-8) encapsulated Fe–Phen complex ((Fe,N)-ZIF-8/CNFs). The Fe–Nx–CNFs obtained from the pyrolysis of (Fe,N)-ZIF-8/CNFs showed a good hierarchical multi-layer structure. The natural network structure of the carbon nanofibers serves as a matrix to uniformly distribute the ZIF-8 particles, and the Fe–Nx sites derived from the Fe–Phen complex were uniformly distributed in ZIF-8 particles. It exhibits excellent ORR performance with a high half-wave potential of 0.875 V (vs. RHE), which was 55 mV higher than that of the commercial Pt/C catalyst. In addition, density functional theory (DFT) calculations on the catalyst further revealed the origin of the ORR activity via a 4e− pathway from the precise local coordination of FeN4 sites.
研究领域:
材料科学
·
电化学
·
催化化学
·
纳米技术
·
能源化学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Mingyue Gao,Zehua Tang,Mengrong Wu,Jiale Chen,Yanchun Xue,Xingmei Guo,Yuanjun Liu,Qinghong Kong,Junhao Zhang
Silicon (Si) with high theoretical capacity has attracted much attention as anode materials of lithium-ion batteries (LIBs). However, the tendency of Si particles to easily expand leads to the rapid attenuation of capacity, which greatly limits their practical applications. In this work, the nitrogen (N) and phosphorus (P) doped Si/CNTs carbon nanofibers (Si/CNTs/CNFs) composites has been fabricated and explored as electrode material for LIBs. N, P doped Si/CNTs/CNFs composites possess unique fiber network structure with suitable space, which can effective buffer volume expand during charge-discharge process. By evaluating lithium storage performances of N, P doped Si/CNTs/CNFs composites as Li-ion battery electrodes, excellent rate performance with a capacity of 529 mA h g −1 (at 5.0 A g −1 ) and remarkable cycling performance of 1142 m Ah g −1 after the 100 cycles (at 0.2 A g −1 ) are obtained. Such outstanding performances can be attributed to the unique fiber network structure and the doping of N and P, which provides a new avenue for the studies of high-performance Si based anode materials of LIBs.
研究领域:
材料科学
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能源存储
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Xiaoxiao Zhang,Jun Wang,Xiaogang Su,Siqi Huo
The rGO-wrapped nanocomposites can be regarded as promising candidates for the development of advanced microwave absorbing materials. In this work, hierarchical rGO-wrapped CNFs were prepared via a two-step strategy, including a classical modified Hummers method and a green reduction reaction. Accompany with the chemical treatments, graphene oxide appears on the outer walls of carbon nanofibers . By modulating the addition amount of ascorbic acid , the outer graphene oxide can be controllably reduced. Moreover, the CNFs/rGO with proper reduction degree exhibits desirable microwave absorption performance, whose minimum RL and effective bandwidth are −38.1 dB (3.85 GHz, d = 5.0 mm) and 4.1 GHz (5.08–9.18 GHz, d = 3.5 mm). The superior microwave attenuation performance is attributed to the synergistic effects between the CNFs and rGO . While the nanofibers provide the obtained sample with an extremely long conductive network, rGO introduces a moderate amount of lattice defects and functional groups, resulting in desirable conductivity loss and multiple polarizations. The existence of rGO also endows CNFs/rGO with suitable dielectric values so that the absorber achieves well impedance matching. Considering the excellent microwave absorption performance, this research provides a new facile route to fabricate rGO-wrapped carbonaceous materials with proper oxygen-containing groups for MAMs.
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Yuan Deng,Kai Li,Qingqing Guan,Tianding Hu,Liang He
The improvement of the photothermal stability and mechanical properties for cellulose nanofibers (CNFs) is a highly desirable yet challenging research topic due to its wide applications. Featuring the 2D-organized structure and various characteristics, layered double hydroxides (LDHs) shows tremendous potential in improving the photothermal stability and mechanical properties of CNFs matrix. Herein, a series of ZnAl-LDHs nanosheets intercalated with different organic molecules were synthesized and subsequently doped into CNFs matrix for preparing CNFs/LDHs composited films. It was showed that doping UV-adsorber intercalated ZnAl-LDHs into the CNFs matrix can significantly enhance UV-shielding ability of CNFs/LDHs composited films due to the synergistic effect between organic anions and the interaction between organic anions and metal cations in LDHs laminates. And the CNFs/HUL (HUL = HALS/UV-P-LDHs) composited film exhibited outstanding UV-shielding ability (UV-shielding rate > 60%) among the considered films, which is comparable to that of the reported materials. Compared with the pristine CNFs film, compositing with HUL rendered the increasing of tensile strength from 80 to 110 MPa. The superior photothermal stability and mechanical properties of CNFs/HUL composited film highlight its great application potential in the fields of coating and packaging.
研究领域:
材料科学
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化学工程
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高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 17
·9235-9249
·
IF 6.123
Wang Kaili,Li Xiaoran,Peng Haozhe,Dong Youming,Li Yanjun,Liu Xiaorong,Li Jianzhang
It is of great practical significance to prepare high-performance biopolymer composite films from renewable resources to replace ubiquitous petrochemical plastics. However, the unsatisfactory mechanical properties and single functionality of bio-polymers make them unable to meet the requirements of practical application. Herein, the tough, strong and renewable soy protein isolate (SPI) composite films with outstanding photothermal conversion and UV-blocking performance were prepared by facile blending and casting methods with integration of cellulose nanofibrils (CNF)@MXene hybrid nanosheets as reinforcers and branched polyethyleneimine (PEI) as a plasticizer. The resultant SPI/PEI/CNF@MXene films presented outstanding mechanical properties i.e., tensile strength of 17.31 MPa, toughness of 16.01 MJ/m 3 , high strain at failure of 114.10%. Furthermore, the SPI/PEI/CNF@MXene films can almost block 100% of UV spectrum and also exhibit satisfactory photothermal driven conversion. These comprehensive properties make it have great potential application as mulching films, packaging engineering, and UV-blocking fields.
研究领域:
材料科学
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纳米技术
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可持续材料
·
高分子科学
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产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Yanyang Liu,Zhenpeng Gong,Yangli Ke,Xiaofang Yang,Dongsheng Wang,Guiying Liao
A novel carbon nanofibers-based hyper-crosslinked polymer composites (HCP@CNFs) were prepared through an in-situ growth method to immobilize hyper-crosslinked polymers (HCP) into carbon nanofibers (CNFs) matrix for dye pollutants removal. The composites combined the advantage of the excellent easy recovery properties of CNFs with high specific surface area characteristics of HCP. Compared with pure CNFs, the HCP@CNFs displayed a high specific surface area of 1110.19 m 2 /g and abundant mesopore volumes of 1.02 cm 3 /g, thus achieving outstanding adsorption performance for various pollutants, especially for the removal of Congo red (CR) and Rhodamine B (RhB). At 298 K, the maximum adsorption amounts of CR and RhB onto HCP@CNFs were 2164.36 ± 109.72 and 1715.00 ± 92.55 mg/g, respectively, which was superior to those of other advanced adsorbents. And the as-prepared HCP@CNFs still remained over 80 % adsorption capability after five regenerations. Additionally, the excellent adsorption performance of HCP@CNFs for CR and RhB in lake water proved that it has broad practical application prospects. Overall, this work provides a new research strategy for the design of HCP@CNFs composites and the remediation of dyes-containing wastewater.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Zhao Meng,Haibo Yang,Yongzhen Ma,Yan Cheng,Yanlong Ma,Binglong Zheng,Hongwei Zhou,Ying Lin
In increasingly complex electromagnetic environments, developing high-performance and dynamically tunable electromagnetic wave (EMW) absorption materials is essential. This study designed a pressure-responsive TiO2/CNFs@Co/C elastic aerogel for efficient EMW absorption. A 3D interpenetrating structure consisting of Ti3C2Tx MXene-derived TiO2 nanosheets, magnetic Co/C frameworks, and carbon nanofibers was constructed via electrospinning combined with in situ synthesis. This 3D interpenetrating structure constructs abundant heterogeneous interfaces, thereby enhancing interfacial polarization. The results demonstrate that the composite achieves an exceptionally broad effective absorption bandwidth (EAB) of 8.17 GHz at a thickness of 2.7 mm, with only 10 wt% filler loading. Additionally, the composite exhibits strong environmental tolerance, including hydrophobicity, stretchability, and thermal insulation. Notably, the alginate-induced elastic aerogels enable dynamic tuning from 6.4 to 18 GHz under compressive strains of 0% to 66%. This work designs dynamically tunable, high-performance EMW absorbers through component optimization and interface engineering, providing a promising strategy for the preparation of next-generation multifunctional intelligent EMW absorbers.
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高影响因子
Small
·
2026
·
IF 11.8
Junjie Tang,Chenling Wu,Taihong Wang,Ming Zhang
The morphology and propagation behavior of channel cracks significantly influence the performance of crack-based thin film strain sensors. To date, flexible strain sensors still face a conflict between sensitivity and sensing range, which severely hinders their applications in flexible wearable electronics. Inspired by the hook-and-loop structure, this work proposed a multiscale design strategy and successfully constructed a composite film with a multi-path network structure via in situ growth of curved carbon nanotubes (CNTs) on carbon nanofibers (CNFs). Through the design of a micro-nano hierarchical structure, CNTs/CNFs sensor exhibits a segmental ultra-high sensitivity with a gauge factor of 5679.4 within the 120%–163% strain range, alongside a broad overall sensing range of up to 163%. The dense conductive network and bridging behavior of CNTs/CNFs film effectively resolves the problem of sensing failure in strain sensors under large strain, exhibiting excellent sensing performance over the entire monitoring range. Finally, we demonstrated the applications of CNTs/CNFs sensor with rapid response/recovery time and good sensing stability in encrypted information transmission, showing its great potential in the fields of health monitoring, human-machine interaction, and secure information transmission.
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Caifu Yi,Tianzhong Yuan,Huining Xiao,Hao Ren,Huamin Zhai
Paper-based packaging materials have drawn increased attention under the rising awareness of environmental issues, whereas the barrier properties of paper are inadequate for food packaging. This study aimed to improve the barrier properties of paper by multi-coating method. Chitosan was coated as the first layer primarily to improve the oil resistance of the paper, whereas hydrophobic modified nanocellulose was applied as the second layer to render the paper water-repellent as well as to further enhance its oil resistance. Finally, zein was coated as the third layer to achieve the heat-sealing property of paper, and further enhance the water and oil resistance of paper. The obtained triple-layer paper had a high kit number of 12 and a low Cobb 60 value of 2.6 g/m 2 , and exhibited heat-sealing ability without any adhesive agent, which has a peel strength of 372.6 N/m. The triple layers also effectively improved the mechanical properties , and decreased the moisture and oxygen permeability of the paper substrate. Moreover, the triple-layer paper possesses good antibacterial activity and cytocompatibility. This study may provide inspiration for improving the barrier properties of food packaging paper and endowing it with heat-sealing property.
研究领域:
食品科学
·
材料科学
·
环境科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Zhengang Wei,Zelin Xie,Yige An,Gang Wu,Duyu Zheng,Juxing zha,Bin Xiao,Jiqiu Qi,Fuxiang Wei,Qingkun Meng,Yanwei Sui,Xiaolan Xue,Danyang Zhao,Yongzhi Li,Qing Yin
CoSb particles have an extremely high specific capacity as anodes for Li-ion batteries, but the severe expansion during the reaction process makes their cycle stability very poor. In this study, a 3D CoSb/P-CNFs@rGO network structure has been successfully constructed by a simple electrospinning technique and hydrothermal treatment . 1D carbon nanofibers and 2D reduced graphene oxide network are intertwined and coated to create this 3D structure. In this ingenious strategy, CoSb particles are embedded in carbon nanofibers to restrain volume expansion. By encapsulating the nanoparticles in a graphene structural network, it is possible to stabilize the matrix structure and precipitate CoSb particles for secondary capture. In addition, the 3D network structure also builds a fast channel for 3D interaction electron/ion transfer. Benefiting from the above structural advantages, the CoSb/P-CNFs@rGO flexible self-supporting anode exhibits excellent electrochemical performance, including ultra-long cycling performance (870 mA h g −1 after 2000 cycles at a current density of 500 mA g −1 ). More importantly, the 3D structure design method may provide a simple and effective strategy to overcome the volume expansion of anode materials .
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）