JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Changfan Xu,Huanwei Wang,Jing Zhan,Yao Kang,Feng Liang
Designing catalytic cathodes with excellent electrocatalytic activities and durability for Na-CO 2 batteries has captured considerable attention so far. Here, a series of morphologically controlled low-crystalline CuCo 2 O 4 was prepared by thermal oxidation of self-assembled Cu-Co precursors ( p -CCO). One-dimensional (1D) rod-like of CuCo 2 O 4 was subsequently encapsulated in polypyrrole shell (PPy) by in-situ polymerization of pyrrole monomers as an advanced catalyst (CCO/PPy) for high-performance Na-CO 2 batteries . It was demonstrated that ammonia solution exerts an important influence on the surface morphology and size of the p -CCO crystallites by the rate of nucleation and growth. Particle size and 1D architecture modulation, associated with the encapsulation of conductive PPy effectively improve the directional transfer rate of ions and the conductivity of the electrode. More importantly, PPy introduction not only induces interfacial reconstruction of CuCo 2 O 4 , arousing more oxygen vacancies and catalytic active sites, but also contributes to the corrosion protection of the active material from the electrolyte during long-term operation. Bestowed by these advantages, the fabricated hybrid Na-CO 2 battery manifested prominent electrochemical performance with a superior areal discharge capacity of 31.3 mAh cm −2 , low discharge-charge voltage gap of 0.6 V, over 400 cycles.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
BMC Oral Health
·
2024
·Vol. 24
·期 1
·1-10
·
IF 2.6
Li Mingxing,Zheng Haiyan,Xu Yuedan,Qiu Yuan,Wang Yinlin,Jin Xiaoting,Zhang Zhengyi,Zhang Ling,Fu Baiping
Objectives To investigate the effect of neutral 10-methacryloyloxydecyl dihydrogen phosphate salt (MDP-Na) on the dentin bond strength and remineralization potential of etch-&-rinse adhesive. Methods Two experimental etch-&-rinse adhesives were formulated by incorporating 0 wt% (E0) or 20 wt% (E20) neutral MDP-Na into a basic primer. A commercial adhesive, Adper Single Bond 2 (SB, 3 M ESPE), served as the control. Sixty prepared teeth were randomly allocated into three groups ( n = 20) and bonded using either one of the experimental adhesives or SB. Following 24 h of water storage, the bonded specimens were sectioned into resin-dentin sticks, with four resin-dentin sticks obtained from each tooth for microtensile bond strength (MTBS) test. Half of the sticks from each group were immediately subjected to tensile loading using a microtensile tester at a crosshead speed of 1 mm/min, while the other half underwent tensile loading after 6-month incubation in artificial saliva (AS). The degree of conversion (DC) of both the control and experimental adhesives ( n = 6 in each group) and the adsorption properties of MDP-Na on the dentin organic matrix ( n = 5 in each group) were determined using Fourier-transform infrared spectrometry. Furthermore, the effectiveness of neutral MDP-Na in promoting the mineralization of two-dimensional collagen fibrils and the adhesive-dentin interface was explored using transmission electron microscopy and selected-area electron diffraction. Two- and one-way ANOVA was employed to assess the impact of adhesive type and water storage on dentin bond strength and the DC (α = 0.05). Results The addition of MDP-Na into the primer increased both the short- and long-term MTBS of the experimental adhesives ( p = 0.00). No difference was noted in the DC between the control, E0 and E20 groups ( p = 0.366). The MDP-Na remained absorbed on the demineralized dentin even after thorough rinsing. The intra- and extra-fibrillar mineralization of the two-dimensional collagen fibril and dentin bond hybrid layer was confirmed by transmission electron microscopy and selected-area electron diffraction when the primer was added with MDP-Na. Conclusions The use of neutral MDP-Na results in high-quality hybrid layer that increase the dentin bond strength of etch-&-rinse adhesive and provides the adhesive with remineralizing capability. This approach may represent a suitable bonding strategy for improving the dentin bond strength and durability of etch-&-rinse adhesive.
研究领域:
牙科学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Ting Liu,Li Li,Tianhao Yao,Yanni Li,Lei Zhu,Fang Li,Xiaogang Han,Yonghong Cheng,Hongkang Wang
To explore advanced anode materials with superior Li + /Na + /K + storage performances for alkaline ion batteries (AIBs), a hybrid of amorphous vanadium oxide uniformly embedded into the highly defective carbon nanofibers (denoted as VO x @CNFs) was fabricated via a facile electrospinning method followed by proper heat treatment in this work. The integrated structure synergistically combines the advantages of the amorphous VO x and the defective carbon matrices, which can not only bring abundant active sites for ion storage and multi-channels for ion diffusion, but also well accommodate the structural change induced electrode pulverization . When evaluated as anode materials for AIBs, the optimized VO x @CNFs demonstrate excellent alkaline ion storage performances with high-specific capacities, long-cycling life and high-rate capabilities, delivering a Na + storage capacity of 260 mAh g −1 at 1.0 A g −1 after 1000 cycles, a Li + storage capacity of 556 mAh g −1 at 0.5 A g −1 after 500 cycles, and a K + storage capacity of 198 mAh g −1 at 0.5 A g −1 after 400 cycles.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量存储
✓ 已验证
DOI
高影响因子
Advanced Science
·
2019
·Vol. 6
·期 13
·1900649
·
IF 15.804
Fanfan Wang,Ning Zhang,Xudong Zhao,Lixuan Wang,Jian Zhang,Tianshi Wang,Fanfan Liu,Yongchang Liu,Li-Zhen Fan
In this paper, the synthesis of ultrasmall Na 2 FePO 4 F nanoparticles (≈3.8 nm) delicately embedded in porous N-doped carbon nanofibers (denoted as Na 2 FePO 4 F@C) by electrospinning is reported. The as-prepared Na 2 FePO 4 F@C fiber film tightly adherent on aluminum foil features great flexibility and is directly used as binder-free cathode for sodium-ion batteries, exhibiting admirable electrochemical performance with high reversible capacity (117.8 mAh g −1 at 0.1 C), outstanding rate capability (46.4 mAh g −1 at 20 C), and unprecedentedly high cyclic stability (85% capacity retention after 2000 cycles). The reaction kinetics and mechanism are explored by a combination study of cyclic voltammetry, ex situ structure/valence analyses, and first-principles computations, revealing the highly reversible phase transformation of Na 2 Fe II PO 4 F ↔ NaFe III PO 4 F, the facilitated Na + diffusion dynamics with low energy barriers, and the desirable pseudocapacitive behavior for fast charge storage. Pouch-type Na-ion full batteries are also assembled employing the Na 2 FePO 4 F@C nanofibers cathode and the carbon nanofibers anode, demonstrating a promising energy density of 135.8 Wh kg −1 and a high capacity retention of 84.5% over 200 cycles. The distinctive network architecture of ultrafine active materials encapsulated into interlinked carbon nanofibers offers an ideal platform for enhancing the electrochemical reactivity, electronic/ionic transmittability, and structural stability of Na-storage electrodes.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 38
·2303736
·
IF 19
Qiong Liu,Faqi Zhan,Hang Luo,Xiaogang Luo,Qiuyan Yi,Qiwei Sun,Zhida Xiao,Yan Zhang,Dou Zhang,Chris R. Bowen
The piezoelectric enhancement of photo-catalytic activity for water splitting and pollutant degradation is a novel approach to developing renewable energy and environmental protection applications. Herein, a new form of defect engineered Na-Sm bimetallic-regulated CaBi 2 Nb 2 O 9 platelet is synthesized via a molten salt process for water splitting and pollutant degradation applications. An intermediate band structure is introduced by Sm-doping, and empty orbitals in the conductive band are introduced by Na-doping. These factors, combined with the increased local charge density around the Sm and Na atoms, result in an increased electrical conductivity, improved electron mobility, and provide additional electrons for enhancing catalytic reactions. As a consequence, the judicious co-doping of CaBi 2 Nb 2 O 9 with Sm and Na leads to a unique synergetic piezo-photo-electric effect to provide a superior piezo-photo-catalytic performance for H 2 production (158.53 µmol g −1 h −1 ) and pollutant degradation (rate constant, k = 0.257 min −1 ). This new approach provides important insights into the application of defect engineering to exploit the cooperative doping of alkaline earth metals and rare metals to create high-performance catalysts.
研究领域:
材料科学
·
催化
·
环境科学
·
能源材料
·
固体化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Xinghui Wu,Lina Yang,Mingjie Xia,Kejin Yu,Wenqi Cai,Taiyuan Shi,Mengxi Xie,He Liu
The stable energy barrier of mucin and soy hull polysaccharide (SHP) is established at the air/water interface in the intestinal fluid and is conducive to the absorption and transportation of nutrients. This study aimed to investigate the effect of different concentrations (0.5 % and 1.5 %) of Na + and K + on the energy barrier through the digestive system model in vitro . The interaction between ions and microwave-assisted ammonium oxalate-extracted SP (MASP)/mucus was characterized by particle size, zeta potential, interfacial tension, surface hydrophobicity, Fourier transform infrared spectroscopy, endogenous fluorescence spectroscopy, microstructure, and shear rheology. The results showed that the interactions between ions and MASP/mucus included electrostatic interaction, hydrophobic interaction, and hydrogen bond. The MASP/mucus miscible system was destabilized after 12 h, and the ions could improve the system stability to some extent. MASP aggregated continuously with the increase in the ion concentration, and large MASP aggregates were trapped above the mucus layer. Furthermore, the adsorption of MASP/mucus at the interface increased and then decreased. These findings provided a theoretical basis for an in-depth understanding of the mechanism of action of MASP in the intestine.
研究领域:
食品科学
·
营养学
·
生物物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 24
·16610-16618
·
IF 3.9
Dengke Wang,Wanggang Zhang,Jian Wang,Xiaohong Li,Yiming Liu
In recent years, the integration of flexible printed electronics and electrochemical sensors has emerged as a new approach for developing wearable biochemical detecting devices. Among the materials utilized in flexible printed electronics, carbon-based conductive inks are considered to be crucial. In this study, we propose a cost-effective, highly conductive, and environmentally friendly ink formulation utilizing graphite and carbon black (CB) as conductive fillers, resulting in a very low sheet resistance of 15.99 Ω sq−1 (conductivity of 2.5 × 103 S m−1) and a printed film thickness of 25 μm. The unique “sandwich” structure of the working electrode (WE) printed with this ink enhances its electrical conductivity, leading to high sensitivity, selectivity, and stability, with almost no water film generated between the WE and the ion-selective membrane (ISM), strong ion selectivity, long-term stability, and anti-interference. The lower detection limit of the sensor for Na+ is 0.16 mM with a slope of 75.72 mV per decade. To validate the sensor's usability, we analyzed three sweat samples collected during physical activity, with Na+ concentrations within the typical range for human sweat (51 ± 4 mM, 39 ± 5 mM, and 46 ± 2 mM).
研究领域:
材料科学
·
电化学
·
可穿戴技术
·
传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Mengyao Chen,Wenjing Qin,Yanli Wang,Hanlin Zhai,Changshun Gu,Xiangchuan Zhao,Ying Bi,Yixin Xu,Zeyu Ming,Shengrong Li,Shu Hu,Xingyue Zhang,Xiaoye Ma,Shougen Yin
The synergistic optimization of high strength, strong adhesion, high conductivity, and rapid self-healing in hydrogels faces fundamental challenges arising from conflicting mechanisms. Herein, a 3D-printed, ionically conductive interpenetrating double-network hydrogel based on poly (acrylic acid) (PAAc) is developed via the innovative introduction of dynamic Na⁺ bridges. This molecular design enables a unique dual mechanism: the Na⁺ ions not only form reversible ionic bonds that accelerate chain diffusion through bond rupture-recombination but also create an electrostatic shielding effect in the covalent network, which promotes chain extension to improve mechanical strength without sacrificing dynamic properties. Furthermore, Na⁺ ions regulate bound/free water states and reduces energy dissipation during topological rearrangement. These synergistic mechanisms collectively enable the hydrogel to overcome conventional performance trade-offs. The resulting material concurrently enhances mechanical properties (300 kPa tensile, 1.2 MPa compressive strength), adhesion (160 kPa), and self-healing (>90% recovery in 1 h). Biomimetic devices such as an underwater octopus-tentacle gripper, biomimetic crawling suckers, and pressure sensors are fabricated. By integrating hydrogels with 1D convolutional neural network algorithms, a real-time motion behavior recognition system is further developed. The multi-property cooperative design strategy offers a new pathway for the application of intelligent hydrogel materials in soft robotics and flexible electronics.
研究领域:
材料科学
·
软体机器人
·
柔性电子学
·
水凝胶工程
·
离子导体
·
生物医学器件
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2023
·Vol. 13
·期 34
·2301509
·
IF 27.8
Jiafeng Ruan,Sainan Luo,Shaofei Wang,Jiaming Hu,Fang Fang,Fei Wang,Min Chen,Shiyou Zheng,Dalin Sun,Yun Song
Boosting the ultralow temperature (below −30 °C) performance of Na-ion hybrid capacitors (SIHCs), which integrate the high energy density of batteries with the high output power and long life of supercapacitors, is critical for the application of advanced electronics in extreme environments. However, their low-temperature performance, especially fast charging capability, is hindered by difficult desolvation and slow pass solid electrolyte interphase (SEI) together with sluggish diffusion within the electrode. Herein, a “single-solute–single-solvent” electrolyte is developed and a through-hole hollow carbon sphere (TH-HCS) is constructed, and it is demonstrated through theoretical calculations and experimental investigations that the weakly solvated structure and high ionic conductivity facilitate the Na + transportation at low temperatures, the highly fluorinated SEI facilitates the Na + migration, and the through-hole hollow structure alleviates the volume expansion during sodiation, thus ensuring fast kinetics and structural stability. As expected, TH-HCS using this electrolyte exhibits a high specific capacity of 87.5 mAh g −1 after 11 000 cycles at 1.0 A g −1 and −40 °C. Coupled with activated carbon, the assembled SIHC displays an energy density of 106.1 and 52.0 Wh kg −1 at 25 and −40 °C, respectively, far exceeding the performance of commercial energy storage systems at low temperature.
研究领域:
储能技术
·
电化学
·
材料科学
·
电池技术
·
低温能源器件
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Lina Wang,Hanpei Yang,Qiangshun Wu,Rui Ma
Photocatalysis-self-Fenton system, integrating photocatalysis with Fenton technology, emerge as promising approaches for environmental remediation. In this study, we introduced K, Na doped g-C 3 N 4 /FeOCl (DCN/FeOCl) catalyst, where amino groups on the DCN surface interacted with unsaturated Fe on FeOCl, forming Fe–N bonds and a Z-scheme heterojunction . The resulting DCN/FeOCl demonstrated efficient H 2 O 2 production and rapid tetracycline (TC) degradation under visible light. The Z-scheme heterojunction and nitrogen vacancy enhanced electron-hole pair separation and O 2 adsorption. Additionally, we proposed a mechanism for dual-channel photocatalytic H 2 O 2 production. This work presents a novel strategy for in-situ H 2 O 2 production and activation, facilitating water decontamination .
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Yuan Su,Xuetong Li,Longjiao Zhu,Huashuo Chu,Yangzi Zhang,Jingjing Tian,Shuxia Lyu,Wentao Xu
To develop an on-site, thermostatic and rapid sensor for the detection of Vibrio parahaemolyticus (V. parahaemolyticus) , A single cross-priming fluorescence (SCPF) sensor was designed using a 3D nano-nucleic acid hybrid material that termed mesoporous silica nanoparticle/nucleic acid-doped nanoflower (MSN/NA-doped nanoflower). In addition, a portable polymerase chain reaction (PCR) tube fluorescence reader was built. Further analysis of the MSN/NA-doped nanoflower morphology and the enhancement mechanism indicated that the MSNs aggregated into larger nanoclusters by adsorbing single cross-priming amplification (sCPA) components, forming MSNs/NAs-doped nanoflowers, and increasing the local concentrations to enhance sCPA efficiency. Cyclic amplification relied mainly on the self-folding hairpin-like structure of the amplified product that continuously formed, opened, re-formed, and opened again. The target DNA was detected with a detection limit of 2.4 copies/μL.
研究领域:
生物技术
·
分子生物学
·
分析化学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
REPRODUCTIVE TOXICOLOGY
·
2023
·
IF 3.3
Kaiqi Chen,Xiaoqian Lu,Dan Xu,Yu Guo,Ying Ao,Hui Wang
Corn oil, sodium carboxymethyl cellulose (CMC-Na), and dimethyl sulfoxide (DMSO) are widely used as solvents or suspensions in animal experiments, but the effects of prenatal exposure to them on fetal development have not been reported. In this study, Kunming mice were given a conventional dose of corn oil (9.2 g/kg·d), CMC-Na (0.05 g/kg·d) or DMSO (0.088 g/kg·d) during gestation days 10–18, and the pregnancy outcome, fetal physical development, serum phenotype, and multi-organ function changes were observed. The results showed that corn oil decreased serum triglyceride level in males but increased their serum testosterone and CORT levels, and affected female placenta and female/male multi-organ functions (mainly bone, liver, kidney). CMC-Na increased female/male body lengths and tail lengths, decreased serum glucose and total cholesterol levels in males as well as increased their serum LDL-C/HDL-C ratio and testosterone level, decreased female serum bile acid level, and affected male/female placenta and multi-organ functions (mainly bone, liver, hippocampus). DMSO decreased male body weight and serum glucose level, decreased male/female serum bile acid levels, and affected male/female placenta and multi-organs functions (mainly bone, hippocampus, adrenal gland). In conclusion, prenatal exposure to a conventional dose of corn oil, CMC-Na or DMSO could affect fetal physical development and multi-organ functions, and has the characteristics of "multi-pathway, multi-organ and multi-target". This study provides the experimental basis for the rational selection of solvents or suspensions in pharmacology and toxicology studies.
研究领域:
药理学
·
毒理学
·
发育生物学
·
动物科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）