Journal of Materials Chemistry B
·
2018
·Vol. 6
·期 6
·966-978
·
IF 4.776
Pei Wang,Pan Xiong,Jing Liu,Shuang Gao,Tingfei Xi,Yan Cheng
Magnesium (Mg) alloys have been intensively investigated as potential absorbable coronary stent materials as their use avoids risks such as late inflammation and restenosis generated by permanent metallic implants. Besides that, clinical trials on coronary stents fabricated from Mg alloys have made great progress recently. However, the over-rapid corrosion rate, magnesium corrosion-induced thrombosis formation and delayed endothelium regeneration continue to be problematic for coronary artery stent therapy. In this study, silk fibroin blended with heparin and GREDVY (Gly-Arg-Glu-Asp-Val-Tyr) peptide was immobilized on a HF-pretreated MgZnYNd alloy surface via a polydopamine layer to improve its corrosion resistance, blood compatibility and endothelialization. Standard electrochemical measurements along with the long-term immersion results indicated that the functionalized MgZnYNd alloy had preferable anti-corrosion abilities compared with the bare MgZnYNd alloy. The modified surface exhibited outstanding hemocompatibility with reduced platelet adhesion, hemolysis rate and prolonged blood coagulation time. Human umbilical vein endothelial cell (HUVEC) and vascular smooth muscle cell (VSMC) co-culture results revealed more attached HUVECs on the functionalized samples than on the MgZnYNd alloy surfaces. The excellent corrosion retardation, hemocompatibility and re-endothelialization of the multi-functional coating indicate a promising method in the field of biodegradable magnesium-based implantable cardiovascular stents.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Jizhao Zou,Tao Liang,Minggui Peng,Peng Liu,Zhe Li,Jiaming Wen,Zhangjian Li,Yusheng Yan,Xin Yu,Xierong Zeng,Junfeng Huang
Integration of cations doping by using unpaired high-spin electrons through the valence state substitution is deemed as a prospective strategy for construction of oxygen vacancies, regulation of inner electronic structures and enhancement of surface properties. Herein, an effective strategy is proposed to construct massive oxygen vacancies into 2D nitrogen-doped carbon nanosheets by the design of heterogeneous interfaces between CoFe alloy and CoFe 2 O 4 nanoparticles. The valence state transition for Fe and Co endows electronic transfer capability and charge density around the oxygen atoms. The prepared CoFe-CoFe 2 O 4 @NCs-4 catalyst exhibits maximum content of oxygen vacancies (Density of O vac 50.1 %). It shows excellent ORR activity with a half-wave potential of 0.83 V and OER overpotential of 320 mV. Reversible Zn-air batteries assembled by the CoFe-CoFe 2 O 4 @NCs-4 catalysts exhibit a power density of 106.32 mW cm −2 and durable stability (500 h at the current density of 10 mA cm −2 ), which also are superior to those of the commercial 20 wt% Pt/C + RuO 2 catalyst. The excellent bifunctional catalytic performance can be attributed to synergistic effects between massive oxygen vacancies, ultrahigh specific surface area (545.9 m 2 g −1 ) and heterogeneous interfacial structure. This work provides valuable insight into designing efficient bifunctional oxygen electrocatalysts for rechargeable Zn-air batteries.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Xinlun Song,Juan Zhang,Xiaogeng Feng,Yan’ou Qi,Junshuo Cui,Ying Xiong
Optimizing active sites and enhancing mass transfer capability are of paramount importance for the improvement of electrocatalyst activity. On this basis, CoFe 2 O 4 /CoFe nanoparticles (NPs) loaded N-doped carbon (NC) that featured with interconnected three-dimensional (3D) ordered porous hierarchies (3DOM FeCo/NC) are prepared, and its electrocatalytic activity is studied. Due to the open structure of 3D ordered macro-pores that greatly improves the mass transfer capacity of the catalytic process and enhances the utilization of active sites inside the catalyst, as well as the uniform distribution of Fe and Co bimetallic sites on the porous skeleton, 3DOM FeCo/NC exhibits superior bi-functional catalytic activities for both hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR). The overpotential of HER is lower than that of commercial Pt/C when performed at high current density (>235 mA cm −2 ) in 1.0 M KOH, and the half-wave potential (0.896 V) of ORR in 0.1 M KOH is also superior to that of 20% commercial Pt/C and most other similar catalysts. The effective utilization and synergistic effect of CoFe 2 O 4 and CoFe hetero-metallic sites remarkably enhance the electrocatalytic activity. Furthermore, 3DOM FeCo/NC is assembled as an air electrode in Zn-air battery, and exhibits satisfactory maximum power density, open-circuit voltage, and charge/discharge stability over benchmark Pt/C + IrO 2 . This work contributes new insights into the design of transition-metal-based multifunctional catalysts, and has great potential for energy conversion and storage.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 19
·11669-11680
·
IF 10.7
Tianfang Yang,Bingcheng Ge,XuPo Liu,Zunjie Zhang,Ye Chen,Yang Liu
Exploring effective electrocatalysts for the oxygen reduction reaction (ORR) is of great significance for rechargeable Zn–air batteries (ZABs). In particular, heteroatom-doping in metal-nitrogen-carbon single-atom catalysts (SACs) is considered an effective strategy to promote the electrocatalytic ORR. Herein, we report a practical strategy for designing single-Fe atom decorated S/N-doped carbon (Fe SAs@S/N–C) through the polymerization of phenylenediamine materials as an efficient ORR catalyst for ZABs. The introduction of S facilitates the high-density doping of Fe–N4 active sites, and regulates the adsorption energy of oxygen-containing intermediates by altering the electronic structure of Fe–N4 active sites. Benefiting from the S-doped carbon structure, the Fe SAs@S/N–C catalyst exhibits outstanding ORR performance (E1/2 = 0.84 V) under alkaline conditions, possesses superior durability after 10 K cyclic voltammetry cycles and methanol resistance, outperforming the commercial 20 wt% Pt/C catalyst. Moreover, the Fe SAs@S/N–C catalyst can be easily synthesized at the gram scale, meeting the requirement of practical applications. The liquid-state ZABs assembled with the Fe SAs@S/N–C catalyst as the air cathode demonstrate a large peak power density of 156 mW cm−2 and long-cycling over 300 h. Moreover, the as-assembled flexible all-solid-state ZABs exhibit excellent cycle stability under various bending conditions, demonstrating the promising potential of substituting Pt-based catalysts in practical applications.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 22
·11340-11347
·
IF 8.867
Lei Cao,Zhen-huan Li,Yu Gu,Dao-hao Li,Kun-mei Su,Dong-jiang Yang,Bo-wen Cheng
Zn–air battery, as a low cost, high energy density, and safe energy device, has received significant attention in recent years. However, its wide application has been hindered due to the low oxygen reduction reaction (ORR) activity in air electrodes without excellent catalysts. Herein, N-doped porous and highly graphitic carbon nanobox-supported Fe-based nanoparticles (Fe–N-CNBs), which were synthesized from fructose, NH3, and FeCl3 by a self-propagating high-temperature synthesis (SHS) process followed by a heat treatment process, were used as ORR catalysts. Fe–N-CNBs calcined at 600 °C (Fe–N-CNBs-600) showed higher ORR activity (onset and half-wave potentials of 1.03 and 0.85 V vs. RHE, respectively), better electrochemical stability, and higher methanol tolerance than Pt/C under alkaline conditions. The outstanding ORR performance of Fe–N-CNBs-600 was attributed to the synergistic effect of Fe, Fe2N, and Fe3C nanoparticles, which was unambiguously confirmed by HRTEM and XRD characterization. Furthermore, Fe–N-CNBs-600 also exhibited higher electrochemical properties than the currently used expensive Pt/C catalyst in Zn–air batteries.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Boxin Fan,Anmin Lei,Yueping Zou,Miaomiao Liu,Lianhua Zhao,Biyao Jin
The charging and discharging processes of rechargeable Zn-air batteries (ZABs) require the use of precious metal catalysts (Pt and RuO 2 ) that are expensive. Therefore, preparing efficient, stable, and affordable metal bifunctional oxygen electrocatalysts compatible with both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial. Herein, a nanoflower-like Co 9 S 8 /Co 1-x S/WS 2 bifunctional oxygen electrocatalyst with a layered structure has been prepared. The cobalt sulfide serves as the main active site and the synergistic interaction between the multi-components modulates the electronic structure of the active site and generates abundant S vacancies, thereby effectively improving the bifunctional oxygen electrocatalytic performance. The electrocatalytic activity of the prepared catalyst for ORR/OER is close to that of commercial noble metal catalysts. When Co 9 S 8 /Co 1-x S/WS 2 is used as the cathode material in Zn-air batteries, the batteries exhibit high specific capacity (822.6 mAh g Zn −1 ), excellent energy density (958.9 Wh kg Zn −1 ), as well as a battery charge/discharge cycling time that was twice that of the commercial catalyst PtC+RuO 2 .
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Zhenjie Wang,Yuwei Guo,Xiyu Song,Chuliang Shen,Yijun Jiang,Ruyi Xie
In order to solve the problems of high energy consumption, high raw material consumption and poor air permeability of fabrics in the dip-baking method, a simple low-liquid inkjet printing method was used to prepare superhydrophobic cotton fabrics. Inkjet printing technology enables precise control over the printing position and droplet amount, allowing for the creation of superhydrophobic patterns on the fabric surface. ZIF-8 precursor solution and long alkyl chain siloxane were formulated as suitable inks and printed on the surface of the fabric, forming a rough interface with low surface energy. The surface micromorphology and chemical structure of the fabric samples were characterized in detail. The prepared ZIF-HDTMS-cotton fabric exhibited superhydrophobic property with a high water contact angle of 158° and self-cleaning property against liquid and solid contaminants. Importantly, after undergoing a variety of harsh damage tests, the modified fabric still exhibited good superhydrophobicity, indicating its favorable chemical stability and mechanical durability. Compared to raw cotton fabric, the treated fabric exhibited an air permeability rate of 311.6 L/m 2 /s, proving its excellent breathability. Due to the high absorption capacity of ZIF-8 to ultraviolet rays, the prepared cotton fabric has obtained a certain ultraviolet protection effect. In addition, through infrared camera observation, it is found that the ZIF-HDTMS-cotton fabric also has a good anti-permeation effect on hot water, which can play a role in preventing scalding. These findings pave the way for the development of patterned multifunctional textiles through precise inkjet printing technology.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Mengjing Wu,Rongrong Li,Kai Yang,Lijiang Yin,Weikang Hu,Xiong Pu
Aqueous Zn-ion batteries (AZIBs) are recognized as a promising energy storage system with intrinsic safety and low cost, but its applications still rely on the design of high-capacity and stable-cycling cathode materials. In this work, we present an intercalation mechanism-based cathode materials for AZIB, i.e. the vanadium oxide with pre-intercalated manganese ions and lattice water (noted as MVOH). The synergistic effect between Mn 2+ and lattice H 2 O not only expands the interlayer spacing, but also significantly enhances the structural stability. Systematic in-situ and ex-situ characterizations clarify the Zn 2+ /H + co–(de)intercalation mechanism of MVOH in aqueous electrolyte. The demonstrated remarkable structure stability, excellent kinetic behaviors and ion-storage mechanism together enable the MVOH to demonstrate satisfactory specific capacity of 450 mA h g −1 at 0.2 A g −1 , excellent rate performance of 288.8 mA h g −1 at 10 A g −1 and long cycle life over 20,000 cycles at 5 A g −1 . This work provides a practical cathode material, and contributes to the understanding of the ion-intercalation mechanism and structural evolution of the vanadium-based cathode for AZIBs.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 30
·1-12
·
IF 2.8
Ding Feng,Li Jiaying,Wang Jiacheng,Wu Tengyan,Liu Xin,Yang Zeliang
Nano magnetic particles immobilized on the surface of carbon spheres ( M Fe 2 O 4 /CNS, M = Mn, Ni, Zn) composites have been obtained through a facile and environmental friendly solvothermal method. The measurement results of M Fe 2 O 4 /CNS clarified the successful preparation of M Fe 2 O 4 /CNS and characterization of composites. Meanwhile, the activation performance of M Fe 2 O 4 /CNS was also measured through catalyzing persulfate (PS) for degrading Rhodamine B. Results showed that the catalytic performance of M Fe 2 O 4 /CNS for PS activation was much stronger than that of pure CNS, and the catalytic ability of M Fe 2 O 4 /CNS was MnFe 2 O 4 /CNS > NiFe 2 O 4 /CNS > ZnFe 2 O 4 /CNS. The influence factors of Rhodamine B degradation were also investigated. When the optimum conditions were conducted, with PS 5 × 10 –3 M, MnFe 2 O 4 /CNS 0.5 g/L, initial pH 6.0, and 60 °C, 98.4% Rhodamine B degradation was obtained within 70 min. Finally, the recycle of MnFe 2 O 4 /CNS was carried out for four times, which demonstrated the favorable retrievability and reusability of MnFe 2 O 4 /CNS. The experiments also proved that the synthesized MnFe 2 O 4 /CNS was a potentially useful catalyst for contaminants degradation in water/wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Hanwen He,Depeng Zhang,Xinshuang Lin,Hongrui Yang,Jiabei Yu,Hangyuan Xing,Rong Gao,Yukun Liu,Sen Zhang,Chao Deng
The exploration of high-performance and multifunctional catalysts is a key issue in Zinc-air/iodide hybrid battery (ZAIHB). In this study, iron‑cobalt dual atomic sites (DAS) embedded in a biomass-derived (N, P) heteroatom-codoped carbon nanobelt (NPCB) framework were designed as a multifunctional catalyst for ZAIHB. Theoretical analysis reveals that the structure matching on both dual-atomic-centers and local electronic engineering contribute to the promoted catalytic activities for oxygen and iodide redox reactions. In addition, the nitrogen (N)-, and phosphorus (P)-codoped carbon nanobelts contributed to the highly porous and freestanding substrate, which endowed rapid kinetics. Benefiting from the above advantageous features, FeCo DAS@NPCB exhibits the excellent multifunctional catalytic properties for oxygen/iodide redox reactions. The full ZAIHB battery with the FeCo DAS@NPCB cathode exhibited high energy efficiency (77.4 %) and a long cycle life (over 300 h). Moreover, the solid-state ZAIHB with a hydrogel electrolyte showed good flexibility and stability during charge/discharge cycling. More impressively, the cell shows high reliability during the transition from exposure to air to an oxygen free environment with the replacement of oxygen reduction reaction (ORR) by iodide reduction reaction (IRR). This unique mechanism results in the high adaptability of the fabricated ZAIHB to serve multifarious working environments. Therefore, this study introduces a novel strategy for the design and construction of multifunctional catalysts, and promotes the rapid development of highly efficient ZAIHB for diverse electronics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xu Jia,Jiyang Tian,Qian Zhang,Jiajun Wan,Hongjiang Song,Ying Xie,Jie Liu
For I 2 cathodes, the severe polyiodide shuttling and sluggish reaction kinetics result in unsatisfactory cycling lifespan and rate performance. Herein, a bifunctional electrophilic host is designed by engineering the electron cloud density to effectively anchor electron-rich polyiodides. Three configurations are initially screened through density functional theory simulations, which reveal that Si─O bonds can firmly anchor I 3 − via Si electrophilic centers. Owing to the considerably lower electronegativity of Si (1.90) than that of O (3.44), electrons surrounding Si atoms are strongly drawn toward O atoms, creating Si electrophilic centers. Specifically, I 3 − adsorbed onto Si─O bonds exhibits a favorable orbital configuration with a low energy gap, thereby kinetically enhancing polyiodide conversion. As a proof of concept, SiO 2 nanocrystals embedded in conductive microporous bio-carbon are derived from poplar flowers. The resulting I 2 cathodes demonstrate excellent cycling stability over 110 000 cycles at 4 A g −1 and a high rate performance with a capacity of 123.8 mAh g −1 at 100 C. Furthermore, the I 2 cathode with a loading as high as 36.5 mg cm −2 can also perform well in terms of 127.6 mAh g −1 after 100 cycles. This study presents a new route for the rational design of high-efficiency and sustainable hosts for I 2 cathodes.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Haiqing Liu,Muhammad Jawad,Jingmao Zhao,Baomin Fan,Mohammad Tabish,Muhammad Mubeen,Mubashar Mahmood,Jingbao Wang
Under-film filiform corrosion (FFC) poses a significant challenge to the durability and reliability of Zn–Al–Mg-coated steel (ZM-steel), necessitating the development of advanced protective strategies. Herein, benzotriazole 5-carboxylic acid (BTC)-modified titanium zirconium (TiZr) conversion coatings (CCs) were developed as a sustainable solution to mitigate FFC, enhance corrosion resistance, and improve the adhesion of epoxy (EP) coatings on ZM-steel. Through electrochemical impedance spectroscopy, potentiodynamic polarization, FFC, and neutral salt spray (NSS) tests, the optimized BTC-TiZr CC, prepared in a Ti–Zr solution containing 0.5 g/L BTC, a treatment temperature of 25 °C, and a short immersion duration of 120 s, exhibited superior corrosion resistance, robust adhesion strength, and exceptional FFC inhibition. Metal–organic complexes (MOCs) of Ti/Zr/Zn with BTC were identified alongside mixed Ti/Zr/Zn/Al/Mg oxides and fluorides within the BTC-TiZr CC. BTC not only exerted strong corrosion inhibition efficacy for ZM-steel but also facilitated the formation of MOCs with metal ions in TiZr conversion solutions (CSs). Density functional theory calculations revealed that BTC preferentially adsorbs onto the MgZn2 phase, effectively suppressing its dissolution within the ZM layer. These findings establish BTC-TiZr CCs as a promising, environmentally friendly solution for advanced corrosion protection of ZM-steel, especially FFC suppression.
✓ 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）