Journal of Energy Storage
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2023
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IF 9.4
Liyu Zhang,Xuelai Zhang,Weisan Hua,Zhibo Chen
Phase change microcapsules (MPCM) have significant advantages, such as fast thermal response and low leakage rate, which can be widely used in construction, textile, and electric power fields. However, the existing microcapsule preparation process has high costs and complicated steps, which limits its popularization and application. This paper reports a de-organic reform of the in-situ polymerization method for the fabrication of MPCM. The aqueous phase (solvent) consisted of pure deionized water and surfactant instead of conventional partial or pure organic solvents such as ethanol and acetamide. Taking the type and content of surfactant, homogenization speed, solvent ratio and core-shell ratio as the research variables, the optimal fabrication scheme of silicon-based MPCM in an alkaline environment was confirmed. The results showed that the Pa@SiO 2 microcapsules prepared by pure inorganic solvents had great shape stability to prevent phase change material leakage and great temperature regulation performance when appropriate amount of hexadecyl trimethyl ammonium bromide was the surfactant and 3-Aminopropyltriethoxysilane was the silane coupling agent . More importantly, it has high heat storage capacity of 191.5 J/g due to its excellent encapsulation ratio of 76.4 %. Therefore, the fabrication method without organic solvent can simplify the fabrication process and greatly reduce the fabrication cost while ensuring excellent thermal properties of microcapsules, especially the outstanding heat storage capacity, which shows great application prospects in terms of microcapsule large-scale production.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
RADIOCHIMICA ACTA
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2023
·Vol. 111
·期 12
·909-918
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IF 1.8
Lingting Xia,Han Wu,Jing Gao,Tianzhen Ye,Long Qiu,Feize Li,Tu Lan,Jijun Yang,Jiali Liao,Ning Liu,Yuanyou Yang
In this work, a gallium–nickel alloy target with a weight percentage ratio of 7:3 was successfully prepared on Cu substrate in a chloride system at room temperature. A novel organic-solvent-free separation procedure based on two columns for extracting 68 Ge from irradiated Ga–Ni alloy target with high radionuclidic purity (99.99 %) was developed. By this separation procedure, the recovery of 68 Ge is 95 ± 5 % and the yield of 68 Ge via the nuclear reaction nat Ga(p, x n) 68 Ge was measured to be 0.27 ± 0.02 MBq/μA h.
研究领域:
核医学
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放射化学
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DOI
高影响因子
Advanced Energy Materials
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2025
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IF 26
Yuxuan Zhang,Junyu Chen,Xuedong Zhang,Baiyu Guo,Zhihao Yan,Yali Liang,Yumeng Sun,Long Xie,Xin He,Hongxia Gu,Jianyu Huang,Qiao Huang
Conversion-type metal fluorides (MFs) cathodes are promising candidates for high-energy lithium–ion batteries. However, their cycling performance is limited due to the decomposition of organic solvent electrolytes at the cathode/electrolyte interface and the dissolution of active materials during cycling, especially at elevated temperatures (above 60 °C). To address these challenges, a thermally stable, organic solvent-free electrolyte (OSFE) composed of three low melting alkali perfluorinated sulfonimide salts is developed, which helps to minimize the undesirable solvent decomposition. Additionally, chemical vapor deposition technology is employed to apply a conformal carbon coating to a representative MF, NiF 2 , effectively preventing the dissolution of active materials. The synergistic effect of OSFE and carbon coating enables a previously uncyclable NiF 2 cathode, which exhibits a high reversible discharge capacity of 450 mAh g −1 after 160 cycles at 80 °C. Moreover, by incorporating 10 wt.% Li 10 GeP 2 S 12 (LGPS) into the OSFE, the cycle number of NiF 2 is extended to 300 cycles, maintaining an impressive discharge capacity of 350 mAh g −1 at 60 °C. These advancements highlight the potential for successful operation of MFs at elevated temperatures using OSFE, paving the way for their practical applications and future commercialization.
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
GREEN CHEMISTRY
·
2021
·Vol. 23
·期 4
·1782-1793
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IF 10.182
Hang Mei,Huajing Liu,Qianqian Shang,Ying Dong,Stig Pedersen-Bjergaard,Chuixiu Huang,Xiantao Shen
In this work, a green, stable and versatile organic-solvent-free electromembrane extraction (EME) system based on semi-interpenetrating polymer networks (semi-IPN) is proposed for the extraction and enrichment of both basic and acidic drugs from human urine. Because of its non-toxicity and high affinity in target separation, semi-solid polypropylene glycol (PPG) was selected as a component for the synthesis of semi-IPN networks via an ultrasonic-assisted blending (UAB) method. Using the homogeneous semi-IPN membrane as the supported liquid membrane (SLM), the organic-solvent-free EME system was obtained. Under the optimized conditions, the organic-solvent-free EME system showed high recovery efficiency for both basic analytes (70–97%) and acidic analytes (86–100%). Moreover, the organic-solvent-free EME set-up could be reused in eight successive extraction batches without an obvious decrease in extraction efficiency. In addition, the EME system could be conveniently stored at ambient temperature for a long time, which will greatly promote the commercialization of EME. We believe this study provides new insights and attempts in the development of green sample preparation approaches.
研究领域:
分析化学
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环境科学
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医学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）