APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Li Liu,Mengting Yue,Jinrong Lu,Jinshan Hu,Yinghua Liang,Wenquan Cui
This paper reports that hybrid titanium dioxide (TiO 2 ) packaged self-assembly perylenetetracarboxylic acid diimide (PTCDI) by self-assembly. These were synthesized through simple mechanical milling that has great photocatalytic performance under visible light . The PTCDI@TiO 2 composite had high activity for the degradation of phenol and 2,4-dichlorophenol, which were 2.3 and 3.2 times of the monomer PTCDI, respectively. After three cycles, the activity of the composite catalyst remained at 70%. Further analysis showed that the photocatalytic activity and stability are mainly due to the enhancement of the charge mobility by the π-π conjugated structure in PTCDI. Moreover, the good energy level matching between PTCDI and TiO 2 helps to separate the electron-hole, thus improving the photocatalytic performance of the composite. The origin of photocatalytic activity was greatly improved due to holes and O 2 − , which was mainly attributed to the strong interaction between PTCDI and TiO 2 .
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2023
·
IF 17.1
Fan Qiao,Junjun Wang,Ruohan Yu,Meng Huang,Lei Zhang,Wei Yang,Hong Wang,Jinsong Wu,Lei Zhang,Yalong Jiang,Qinyou An
Calcium-ion batteries are an emerging energy storage device owing to the low redox potential of Ca2+/Ca and the naturally abundant reserves of the Ca element. However, the high charge density and large radius of Ca2+ lead to a low calcium storage capacity or unsatisfactory cycling performance for most electrode materials. Herein, we report the organic crystal 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) as an anode material for aqueous calcium-ion batteries (ACIBs) in a water-in-salt electrolyte. PTCDI delivers a high discharge capacity of 131.8 mAh g–1, excellent rate performance (86.2 mAh g–1@10000 mA g–1), and an ultralong life of 68000 cycles (over 470 days) with a high capacity retention of 72.7%. The calcium storage mechanism of PTCDI is shown to be an enolization reaction by in situ attenuated total reflectance Fourier-transform infrared and ex situ X-ray photoelectron spectroscopy. The activation mechanism of PTCDI microribbon splitting along the (020) crystal plane is studied by in situ X-ray diffraction, 3D tomography reconstruction technologies, and ex situ transmission electron microscopy. In addition, the Ca2+ storage sites and diffusion pathways of PTCDI are studied by density functional theory calculations. Finally, by matching a high-voltage Prussian blue analogue cathode, the assembled aqueous calcium-ion full cells exhibit excellent wide-temperature operating capability (−20 to +50 °C) and an ultralong life of 30000 cycles. Further, an aqueous calcium-ion pouch cell is constructed and exhibits a long lifetime of over 500 cycles.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 17
·2000675
·
IF 16.836
Yang Hu,Wu Tang,Qihang Yu,Xinxin Wang,Wenqiang Liu,Jiahui Hu,Cong Fan
Organic redox-active molecules are inborn electrodes to store large-radius potassium (K) ion. High-performance organic cathodes are important for practical usage of organic potassium-ion batteries (OPIBs). However, small-molecule organic cathodes face serious dissolution problems against liquid electrolytes. A novel insoluble small-molecule organic cathode [ N , N ′-bis(2-anthraquinone)]-perylene-3,4,9,10-tetracarboxydiimide (PTCDI-DAQ, 200 mAh g −1 ) is initially designed for OPIBs. In half cells (1–3.8 V vs K + /K) using 1 m KPF 6 in dimethoxyethane (DME), PTCDI-DAQ delivers a highly stable specific capacity of 216 mAh g −1 and still holds the value of 133 mAh g −1 at an ultrahigh current density of 20 A g −1 (100 C). Using reduced potassium terephthalate (K 4 TP) as the organic anode, the resulting K 4 TP||PTCDI-DAQ OPIBs with the electrolyte 1 m KPF 6 in DME realize a high energy density of maximum 295 Wh kg −1 cathode (213 mAh g −1 cathode × 1.38 V) and power density of 13 800 W Kg −1 cathode (94 mAh g −1 × 1.38 V @ 10 A g −1 ) during the working voltage of 0.2–3.2 V. Meanwhile, K 4 TP||PTCDI-DAQ OPIBs fulfill the superlong lifespan with a stable discharge capacity of 62 mAh g −1 cathode after 10 000 cycles and 40 mAh g −1 cathode after 30 000 cycles (3 A g −1 ). The integrated performance of PTCDI-DAQ can currently defeat any cathode reported in K-ion half/full cells.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·
IF 13.3
Jianhui Zeng,Ting Liang,Jingjing Zhang,Daoqing Liu,Shiang Li,Xinhui Lu,Meng Han,Yimin Yao,Jian-Bin Xu,Rong Sun,Liejun Li
Attaining elevated thermal conductivity in organic materials stands as a coveted objective, particularly within electronic packaging, thermal interface materials, and organic matrix heat exchangers. These applications have reignited interest in researching thermally conductive organic materials. The understanding of thermal transport mechanisms in these organic materials is currently constrained. This study concentrates on N , N' -dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C 8 ), an organic conjugated crystal. A correlation between elevated thermal conductivity and augmented Young's modulus is substantiated through meticulous experimentation. Achievement via employing the physical vapor transport method, capitalizing on the robust C═C covalent linkages running through the organic matrix chain, bolstered by π–π stacking and noncovalent affiliations that intertwine the chains. The coexistence of these dynamic interactions, alongside the perpendicular alignment of PTCDI-C 8 molecules, is confirmed through structural analysis. PTCDI-C 8 thin film exhibits an out-of-plane thermal conductivity of 3.1 ± 0.1 W m −1 K −1 , as determined by time-domain thermoreflectance. This outpaces conventional organic materials by an order of magnitude. Nanoindentation tests and molecular dynamics simulations elucidate how molecular orientation and intermolecular forces within PTCDI-C 8 molecules drive the film's high Young's modulus, contributing to its elevated thermal conductivity. This study's progress offers theoretical guidance for designing high thermal conductivity organic materials, expanding their applications and performance potential.
研究领域:
材料科学
·
热传导研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yuying Xu,Junjie Shi,Anyu Zhang,Minglong He,Qing Wu,Hailin Lu,Zhiwei Chen,Li Wen,Yang Yue,Siliang Wang
Aqueous zinc ion microbatteries (AZIMBs) are promising due to its safety and economy. However, the relatively high redox potential (−0.76 V vs. SHE) limitation of zinc metal seriously reduces the voltage of AZIMBs. In contrast, potassium metal has a very low redox potential (−2.93 V vs. SHE), which can provide higher voltage. Thus, we develop the first aqueous potassium ion microbatteries (APIMBs). Since potassium metal is unstable in aqueous electrolytes, we used 3,4,9,10-perylene tetracarboxylic diimide (PTCDI). To improve the stability of traditional perylene anode, the electrostatic self-assembly strategy is used to synthetic PTCDI/MXene anode with ultra-high cycle life (79.94 % capacity retention after 10,000 Galvanostatic Charge-Discharge (GCD) cycles at 10.0 A g −1 ) and low redox potential (−1.20 V vs. Ag/AgCl). The KFeMnHCF cathode with high capacity and voltage is selected to build ultra-high-voltage APIMBs with a voltage up to 2.6 V, excellent energy density (202.81 μWh cm −2 ), power density (7.99 mW cm −2 ), cycle life (89.17 % after 2500 GCD cycles at 5.0 mA cm −2 ), and flexibility (95.13 % under 180°). This work provides a promising direction for developing potassium storage materials and APIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Lu Zheng,Hua Wang,Peng Zuo,Yueling Liu,Huiying Xu,Bang-Ce Ye
Exosomes are lipid bilayer extracellular vesicles secreted by various types of cells and inherit abundant molecular information from parental cells. Tumor-derived exosomes have been widely recognized as noninvasive biomarkers for early cancer diagnosis and surveillance, but the separation of intact exosomes and detection of exosomal proteins remain challenging. Herein, we proposed a microfluidic chip for specific exosome isolation, integrated with sensitive quantification by a novel PTCDI–aptamer signal switch strategy. To enhance the capture efficiency, an alternating drop-shaped micropillar array was designed to assist the capture of tumor-derived exosomes by Tim4-modified magnetic beads (Tim4 beads) on the chip. Following capture, a chelating agent can easily elute intact exosomes which were further used for profiling exosomal surface proteins by the multiplexed fluorescence turn-on approach. Profiting from the efficient on-chip enrichment of the Tim4 beads and superior fluorescence signal transduction strategy, the detection limit of the analysis platform for HepG2 exosomes is as low as 8.69 × 103 particles/mL with a wide linear range spanning 6 orders of magnitude. Meanwhile, the proposed platform could recognize subtle changes in protein levels on the exosomal surface from various cell lines. More importantly, this strategy is successfully applied to analyze exosomes in human serum to distinguish liver cancer patients from healthy individuals. Combined analysis of different types of biomarkers on the exosomal membrane surface can greatly improve the accuracy of cancer type identification and disease monitoring. We hope that this convenient, rapid, and sensitive platform may become a powerful tool in the field of exosome analysis and early cancer screening.
研究领域:
生物医学工程
·
癌症生物学
·
分子诊断
·
微流控技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-11
·
IF 17.694
Zhang Zishuai,Zhu Yilong,Yu Miao,Jiao Yan,Huang Yan
Rechargeable aqueous metal||I 2 electrochemical energy storage systems are a cost-effective alternative to conventional transition-metal-based batteries for grid energy storage. However, the growth of unfavorable metallic deposition and the irreversible formation of electrochemically inactive by-products at the negative electrode during cycling hinder their development. To circumvent these drawbacks, herein we propose 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) as negative electrode active material and a saturated mixed KCl/I 2 aqueous electrolyte solution. The use of these components allows for exploiting two sequential reversible electrochemical reactions in a single cell. Indeed, when they are tested in combination with an active carbon-enveloped I 2 electrode in a glass cell configuration, we report an initial specific discharge capacity of 900 mAh g −1 (electrode mass of iodine only) and an average cell discharge voltage of 1.25 V at 40 A g −1 and 25 \(\pm\) 1 °C. Finally, we also report the assembly and testing of a PTCDI|KCl-I 2 |carbon paper multilayer pouch cell prototype with a discharge capacity retention of about 70% after 900 cycles at 80 mA and 25 \(\pm\) 1 °C.
研究领域:
电化学
·
能源存储
·
电池技术
·
材料科学
✓ 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）