Li Ali,Ruan Lvquan,Gao Yan,Zhang Yiyi,Zhang Xianhao,Chen Tengfei,Qiao Yu
With the rapid advancement of flexible and wearable electronics, there is an increasing demand for conductive inks that are low-cost, low-temperature processable, and high-performance. In this study, a particle-free conductive silver ink with a low silver content (22 wt%) was developed using silver acetate as the precursor. The influence of curing conditions on the performance of printed silver electrodes was systematically examined. The ink exhibits excellent low-temperature sintering capability, achieving high electrical conductivity with a resistivity as low as 4.8 × 10 –6 Ω m at temperatures below 100 °C, showing similar properties to those of high-temperature-processed commercial inks. Characterization techniques, including four-point probe measurements, scanning electron microscopy, and X-ray diffraction, revealed that the electrical conductivity of the silver electrodes is highly dependent on annealing temperature and dwell time. At 100 °C for 20 min, silver ions were reduced into continuous conductive networks, achieving a resistivity that, while higher than bulk silver, remains sufficiently low to meet the requirements of low-temperature electronic applications. Extending the annealing duration to 30 min further reduces the resistivity to 4.45 × 10 –6 Ω m. These findings provide both theoretical insights and practical reference for the low-cost manufacturing of flexible electronic applications, including wearable sensors, printed circuits, and bendable displays.
Jiqing Dong,Ran Ping,Xun Dai,Dongchao Wang,Fusheng Liu,Shanshan Du,Mengshuai Liu
The combination of pyrrolidine-2,5-dione-derived ionic liquids with silver acetate (AgOAc) were developed as binary catalysts for conversion of simulated flue gas CO 2 and propargylic alcohols to α-alkylidene cyclic carbonates . By tuning different catalyst components, the [HTMG][Pyrro]/AgOAc system was confirmed to be the most efficient and exhibited an excellent synergistic action in facilitating the carboxylic cyclization under room temperature and solvent-free conditions. The influence of reaction parameters on carboxylic cyclization of CO 2 with 2-methylbut-3-yn-2-ol were optimized. Under the determined conditions, the [HTMG][Pyrro]/AgOAc system was stable enough to show durable high activity in eight recycles, and also versatile in carboxylic cyclization of flue gas CO 2 with other propargylic alcohols. Moreover, a thorough comparison of [HTMG][Pyrro]/AgOAc with the reported catalysts was provided and evaluated, the results suggested that the developed catalytic system has significant advantages in practical application. Finally, the mechanistic details for the conversion of CO 2 into α-alkylidene cyclic carbonates catalyzed by [HTMG][Pyrro]/AgOAc was also elucidated on the basis of reactants activation.
危险品化学品经营许可证（带存储）