INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2019
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IF 4.084
Qinghe Cao,Chuanqin Wang,Shujie Chen,Xingdong Xu,Fenggang Liu,Xinhua Geng,Jiahai Wang
Chemically polished Ti foil has been shown to be an excellent substrate for the growth of low-interface-resistance electrocatalysts . Herein, we grow vertically aligned interlaced-mesh-network NiP 2 nanosheets on deeply polished Ti foil (NiP 2 NS/Ti) by the gas-phase phosphidation of Ni(OH) 2 . The produced interconnected nanosheets provide abundant electron transfer pathways and facilitate electron transfer, as confirmed by electrochemical impedance spectroscopy measurements and the presence of numerous voids that allow for fast gas release and ion migration. In view of the above advantages, the NiP 2 NS/Ti shows high electrocatalytic activity for the hydrogen evolution reaction in both alkaline and acidic solutions, wherein overpotentials of only 134 and 140 mV are required to attain a current density of 10 mA cm −2 , respectively. In addition, the above electrode also features a small Tafel slope (60.5 mV dec −1 in alkaline and 49.5 mV dec −1 in acidic solutions) and long-term stability, and can therefore be employed as an efficient and cheap three-dimensional cathode for electrochemical water splitting.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
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2024
·Vol. 26
·期 22
·2400648
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IF 3.4
Ruijie Yao,Xiaoxue Xu,Yixuan Zhang,Jing Zhang,Weilong Wang,Wei Li,Minfang Chen
The clinical diagnosis of diabetes mellitus typically depends on blood glucose measurements. Many laboratory studies have focused on enzyme–electrode biosensors that require an external power source. In this study, the potential of triboelectric nanogenerators (TENGs) as self-driven sensors for glucose detection is investigated by utilizing the glucose specificity of glucose oxidase. When immersed in glucose solutions with concentrations ranging from 3.9 to 13.1 mmol L −1 , the TENGs exhibit a linear relationship between the glucose concentration and current and voltage changes. These findings suggest that the TENGs developed in this study can effectively function as glucose sensors, providing a foundation for future human blood glucose monitoring applications and demonstrating a promising new approach for biomedical sensor technology.
研究领域:
生物医学工程
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材料科学
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传感器技术
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 6
·期 4
·2778-2784
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IF 3.84
Yaoming Xiao,Gaoyi Han,Haihan Zhou,Jihuai Wu
A titanium (Ti) foil based perovskite solar cell (PSC) is devised and prepared by employing titanium dioxide nanowire (TNW) arrays and titanium dioxide nanoparticles (TNPs) on Ti foil substrates as the electron transporting layer (ETL). The TNW array is desirable for the PSC, since it can provide direct pathways for the rapid collection and transmission of photo-generated electrons. The Ti foil substrate has many advantages such as flexibility, low sheet resistance, and excellent mechanical stability. The sunlight illuminates through the highly transparent poly(3,4-ethylenedioxythiophene) (PEDOT) film on the indium doped tin oxide/polyethylene naphthalate (ITO/PEN) substrate. The transparent PEDOT electrode can be used as the hole transporting layer (HTL) due to the well matched band positions for charge separation and transport. As a result, the Ti foil based light-weight PSC with TNW arrays yields an efficiency of 13.07% with an active area of 1.00 cm2, which is higher than that of the PSC with TNPs (9.93%). These promising results highlight the potential application of the PEDOT and Ti foil in cost-effective, large-area, and flexible PSCs.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Zaitian Wang,Xuan Li,Fei Sun,Kaining Zhang,Fei Long,Tong Zhou,Lei Liu
Flexible piezoelectric films represent a groundbreaking advancement for wearable energy harvesting and bioelectronics, where mechanical adaptability and efficient electromechanical conversion are equally crucial. However, the persistent incompatibility between high piezoelectric coefficients and structural pliability creates a critical performance ceiling that undermines device reliability in dynamic operating environments. Here, we report an in situ interface engineering strategy to fabricate high-performance flexible piezoelectric films directly on Ti foils through combining hydrothermal synthesis of BaTiO 3 films with infiltration of P(VDF-TrFE). The flexible P(VDF-TrFE)/BaTiO 3 film with spatially interlocked heterostructure exhibits an excellent piezoelectric coefficient d 33 of ~264 pC N −1 , representing an enhanced remnant polarization of 21.4 μC cm −2 and a reduced coercive field of 220 kV cm −1 . The as-prepared piezoelectric film assembled on the Ti foil substrates demonstrates long-lasting flexibility, retaining an output voltage of about 5 V after 5000 bending cycles. The exceptional performance originates from the improved polarization through the stabilized BTO nanodomain synthesized by the in situ hydrothermal process. Furthermore, the spatially interlocked architecture redistributes polarized charges, thereby mitigating polarization degradation induced by microscale defects. This study pioneers a new paradigm for developing high-performance flexible piezoelectric film, and the scalable process can be potentially applied to wearable applications.
研究领域:
材料科学
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纳米技术
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能源采集
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生物电子学
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产品关联
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
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2025
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IF 13.5
Hui Zhang,Zijian Zhao,Yajing Wang,Kai Ni,Yanfei Wang,Liang Zhu,Jianyun Liu,Xiaoyu Zhao
The development of high-mass-loading electrodes with robust ion transport characteristics is crucial for efficient electrochemical lithium extraction from brine. Herein, we report a solvent-free hot-pressing strategy to fabricate structurally engineered LiFePO 4 electrodes with enhanced electrochemical performance and mechanical stability. By integrating etched titanium foil as a current collector and multi-walled carbon nanotubes as a conductive additive, a three-dimensionally interconnected porous structure was formed, enabling accelerated ion diffusion and improved structural integrity. Micro-CT and Avizo-based analysis revealed that the dry press-coated electrodes possess higher porosity, lower tortuosity and more connected ion channels compared to conventional slurry-coated electrodes. Electrochemical tests demonstrated a significantly higher lithium-ion diffusion coefficient and lower charge transfer resistance of the dry press-coated electrodes. Under optimized conditions, the dry press-coated electrodes, possessing a mass loading of 19.4 mg·cm −2 , delivered a lithium extraction capacity of 4.13 mg·cm −2 with a purity of 93.91% over 15 cycles in simulated Uyuni brine. This work establishes a scalable hot-pressing method and elucidates its fundamental physicochemical advantages for lithium-selective electrochemical separation.
研究领域:
材料科学
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电化学
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储能技术
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化学工程
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
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IF 7.336
Guifeng Zhang,Weijun Zhou,Minfeng Chen,Qiuya Wang,Anxin Li,Junling Xu,Jizhang Chen
Benefiting from the advantages in safety, reliability, affordability, and energy/power densities, aqueous zinc-ion batteries (AZIBs) with mildly acidic electrolytes have triggered tremendous research interest. However, Ti foil, as the most widely used current collector for cathodes of AZIBs, is rather expensive. In this work, stainless steel (SS) foil, with a much lower price, is proposed to be a more appropriate current collector than Ti, Ni, Al, and Cu foils. Among them, Ti and SS foils are found to own superior wettability with related solvents, excellent anti-corrosion ability, and strong binding with cathode material. In contrast, Al and Cu foils suffer from severe corrosion in aqueous electrolytes even without external potential, and Ni foil is electrochemically unstable in aqueous electrolytes. Further studies show that only Ti and SS current collectors can enable Zn//MnO 2 battery to work normally. And SS foil behaves slightly better than Ti foil in both Zn//MnO 2 battery and hybrid supercapacitor in terms of specific capacity, rate capability, and cyclability. This work provides guidance for the selection of current collectors for AZIBs and related energy storage devices.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）