JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Ping Li,Zhe Cheng,Yingke Zhou,Enmin Xu,Luozhi Mo,Xiaohui Tian
Lithium batteries have been widely used in various fields, however, further research needs to be conducted to improve their stability and long-term storage performance for the highly active lithium metal anode. Herein, an organic–inorganic composite film composed of polypropylene carbonate (PPC), lithium bis(trifluoromethanesulphonyl)imide (LiTFSI) and Li 6.5 La 3 Zr 1.5 Nb 0.5 O 12 (LLZNO) is fabricated on the lithium foil surface by spin-coating technique to passivate the lithium anode and regulate the ion transport behavior. The Li/CF x battery with the optimized composite film coated lithium anode exhibits excellent discharge capacity (1006.6 mAh/g, 0.1C) and high-rate capability (639.4 mAh/g, 5C), much higher than those of the uncoated Li/CF x battery. The discharge specific capacity remains 521.7 mAh/g at 0.1C after stored at 55 °C for 60 days, corresponding to a monthly self-discharge of 1.87 %, while the battery without coating film has almost failed. Theoretical calculation, Raman mapping and Kelvin probe force microscopy (KPFM) measurements demonstrate that the stable and ion-conductive composite film effectively increases ion channels, regulates ion migration and passivates the Li anode from the corrosion of liquid electrolyte during discharge and storage. Constructing a rational organic–inorganic composite film with high mechanical stability and ionic conductivity on the Li anode surface is a facile and cost-effective strategy to enhance the high-rate and long-term storage performance of Li/CF x battery.
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
PubMed
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 40
·12518-12522
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IF 6.641
Yongqi Yang,Jianyu Xu,Yi Li,Guanghui Gao
Rewritable paper exhibits the potential to replace conventional paper due to its reusable properties. However, compared to conventional paper, rewritable paper can fade, making it impossible to store information stably for a long time in a daily environment, which limits its application. Here, a series of photochromic gelatin/polyvinyl alcohol (PVA) composited films containing polyoxometalate were prepared. The addition of PVA had a significant effect on the mechanical, transparent, photochromic and fading properties of the film. The addition of PVA significantly inhibited the fading process of the film after photochromism. This was due to the increase of crosslink density in the film and the existence of hydrogen bonding between PVA and inorganic photochromic ammonium molybdate. Despite this, the film was able to achieve complete fading in 1.5 days in a humid environment and the fading time could be further accelerated to 2 h by heating. This film could display information stably over a long time while being rewritable. It was expected that this simple and effective design strategy is conducive to the development of a new generation of rewritable paper.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-13
·
IF 14.7
Yang Sheng,Shi Hong-Yi,Liu Jia,Lai Yang-Yan,Bayer Özgür,Fan Li-Wu
Seasonal storage of solar thermal energy through supercooled phase change materials (PCM) offers a promising solution for decarbonizing space and water heating in winter. Despite the high energy density and adaptability, natural PCMs often lack the necessary supercooling for stable, long-term storage. Leveraging erythritol, a sustainable mid-temperature PCM with high latent heat, we introduce a straightforward method to stabilize its supercooling by incorporating carrageenan (CG), a bio-derived food thickener. By improving the solid-liquid interfacial energy with the addition of CG the latent heat of erythritol can be effectively locked at a very low temperature. We show that the composite PCM can sustain an ultrastable supercooled state below −30 °C, which guarantees no accidental loss of the latent heat in severe cold regions on Earth. We further demonstrate that the common ultrasonication method can be used as the key to unlocking the latent heat stored in the CG-thickened erythritol, showing its great potential to serve as a high-performance, eco-friendly PCM for long-term seasonal solar energy storage.
研究领域:
可再生能源
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材料科学
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环境科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Sijia Mu,Tingting Qian,Zhiming Li,Puxuan Zhao,Yanxin Tao,Hao Chang,Fengli Qu
Tumor-derived exosomes are gaining recognition as a promising cancer vaccine for immunotherapies due to their abundant tumor antigens and their role as endogenous carriers for antigen delivery. However, challenges including unstable membrane structures and compromised protein integrity during long-term storage, as well as the absence of effective delivery methods, restrict their clinical applications. Herein, we introduce an exosomes-loaded sugar microneedle (EXO-SMN) patch that not only allows for the long-term storage of exosomes but also facilitates intradermal delivery to enhance immunotherapies. By employing a two-casting micro-molding method, the EXO-SMN patch is composed of an array of tips simply made from trehalose, with a polyvinylpyrrolidone backing. The EXO-SMN patch demonstrates the capability to effectively protect the loaded exosomes, maintaining their membrane structure and protein integrity even after being stored at room temperature for at least one month. Additionally, the EXO-SMN patch possesses strong mechanical properties for skin penetration, facilitating the rapid release of exosomes into the skin within 120 s, and prolonging exosome retention in both skin and lymph nodes compared to intravenous (IV) or subcutaneous (SC) injections. Intradermal vaccination of tumor-derived exosomes via the EXO-SMN patch elicited higher antigen-specific immune responses and resulted in slower tumor growth compared to IV or SC injection. Given its easy to use and reliability, the proposed EXO-SMN patch could eventually facilitate the storage and delivery of exosomes in various biomedical applications.
研究领域:
癌症研究
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生物医学工程
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免疫学
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药学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 22
·10031-10039
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IF 3.591
Qiwen Chen,Dandan Chu,Li Yan,Haichen Lai,Xue-Qiang Chu,Danhua Ge,Xiaojun Chen
Metal–organic frameworks (MOFs) as porous materials have significantly improved catalytic properties because of their rich active sites and large surface area. Herein, we develop a facile and efficient diffusion-controlled strategy to prepare ZIF-67 hollow nanoprisms (ZIF-67 HNPs) for a non-enzymatic glucose sensor. The interparticle pores of the hollow structure can afford fast diffusion pathway for guest molecules to move in and out of the MOF crystals. Such nanostructured MOF-based sensors exhibit good electrocatalytic activity towards glucose oxidation in an alkaline solution with a high sensitivity of 445.7 μA mM−1 cm−2, a low detection limit of 0.96 μM (S/N = 3) and a upper limit of 42.1 mM, and can be used to directly determine blood glucose. Moreover, it achieves well-pleasing results in the non-enzymatic analysis of glucose in real human blood serum samples. In addition, the as-prepared sensor also displays satisfactory reproducibility, selectivity and long-term storage stability. This study focuses on a facile strategy to design the in situ growth of hollow MOF nanomaterials as efficient and stable electrocatalysts, shedding light on the development of non-enzymatic sensors for monitoring glucose with transition metal-based hollow MOF catalysts.
研究领域:
材料科学
·
分析化学
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纳米技术
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电化学
✓ 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）