基于WO_(3)-NiO体系的电致变色(EC)玻璃具有优异的可见与红外的主动调控特性和节能效果,在建筑、新能源汽车等产业的应用得到越来越多的关注。生产效率与制造成本等因素的限制,使得大面积WO_(3)-NiO电致变色玻璃未规模化地投入市场。相...基于WO_(3)-NiO体系的电致变色(EC)玻璃具有优异的可见与红外的主动调控特性和节能效果,在建筑、新能源汽车等产业的应用得到越来越多的关注。生产效率与制造成本等因素的限制,使得大面积WO_(3)-NiO电致变色玻璃未规模化地投入市场。相比于在单一玻璃表面采用膜层堆栈方式制备多层膜结构的电致变色器件,以高性能锂离子胶膜为中间层,将磁控溅射沉积的Glass/TCO/WO_(3)以及Glass/TCO/NiO通过层压的方式组装成夹层式器件是一种可行地实现电致变色玻璃大面积、低成本规模化生产的技术手段,正逐渐成为器件制备技术的主流。然而,面向于大面积夹层式WO_(3)-NiO电致变色玻璃的低成本制造和新的应用需求,仍有必要开展从材料到器件的体系化研究。在材料端,开发兼容现有镀膜产线的高质量EC氧化物陶瓷靶材制备技术,高性能WO、NiO薄膜成分、结构、性能与色彩的调控技术,具备高离子电导率、高粘结强度、高热稳定、高透明且易于实现大面积规模化生产的锂离子胶膜材料及其制备技术等。在器件端,开发与现有玻璃产业兼容的大尺寸器件的层压工艺,弧型器件的制备技术,具备更高效节能且能呈现中性着褪色的器件技术等。针对上述挑战,综述了国内外相关研究团队在上述领域的研究进展,结果表明,可以制备出满足高性能电致变色薄膜沉积的EC氧化物陶瓷靶材,通过调节磁控溅射工艺参数可以有效实现对薄膜成份、结构以及性能调控,开发出满足层压工艺的、具有高离子电导率(1.51×10^(-4)S·cm^(-1))的固态聚合物电解质,最终利用商用高压釜实现30 cm×30 cm WO_(3)-NiO电致变色器件高质量制备。展开更多
Poly（3,4-ethylenedioxythiophene）：poly（styrenesulfonate）（PEDOT：PSS） is usually sandwiched between indium tin oxide（ITO） and a functional polymer in order to improve the performance of the device. However, bec...Poly（3,4-ethylenedioxythiophene）：poly（styrenesulfonate）（PEDOT：PSS） is usually sandwiched between indium tin oxide（ITO） and a functional polymer in order to improve the performance of the device. However, because of the strong acidic nature of PEDOT：PSS, the instability of the ITO/PEDOT：PSS interface is also observed. The mechanism of degradation of the device remains is unclear and needs to be further studied. In this article, we investigate the in-situ electrochromism of PEDOT：PSS to disclose the cause of the degradation. X-ray photoelectron spectroscopy（XPS） was used to characterize the PEDOT：PSS films, as well as the PEDOT：PSS plus polyethylene glycol（PEG） films with and without indium ions. The electrochromic devices（ECD） based on PEDOT：PSS and PEG with and without indium ions are carried out by in-situ micro-Raman and laser reflective measurement（LRM）. For comparison, ECD based on PEDOT：PSS and PEG films with LiCl, KCl, NaCl or InCl_3 are also investigated by LRM. The results show that PEDOT：PSS is further reduced when negatively biased, and oxidized when positively biased. This could identify that PEDOT：PSS with indium ions from PEDOT：PSS etching ITO will lose dopants when negatively biased. The LRM shows that the device with indium ions has a stronger effect on the reduction property of PEDOT：PSS-PEG film than the device without indium ions. The contrast of the former device is 44%, that of the latter device is about 3%. The LRM also shows that the contrasts of the device based on PEDOT：PSS＋PEG with LiCl, KCl, NaCl, InCl_3 are 30%, 27%, 15%, and 18%, respectively.展开更多
An amorphous,colorless,and highly transparent star network polymer with a pentaerythritol core linking four PEG-block polymeric arms was synthesized from the poly(ethylene glycol)(PEG),pentaerythritol,and dichlorometh...An amorphous,colorless,and highly transparent star network polymer with a pentaerythritol core linking four PEG-block polymeric arms was synthesized from the poly(ethylene glycol)(PEG),pentaerythritol,and dichloromethane by Williamson reaction.FTIR and ~1H-NMR measurement demonstrated that the polymer repeating units were C[CH_2-OCH_2O-(CH_2CH_2O)_m-CH_2O-(CH_2CH_2O)_n-CH_2O]_4.The polymer host held well mechanical properties for pentaerythritol cross-linking.The gel polymer electrolytes based on Lithium pe...展开更多
通过控制无机陶瓷填料在电解质中的比例,制备出了有机/无机复合凝胶态电解质膜,用场发射扫描电镜和电化学工作站对其微观结构以及离子电导率进行了表征。结果表明,聚偏氟乙烯(PVDF)与二氧化硅(SiO_2)的质量比为92:8时,所制备的复合凝胶...通过控制无机陶瓷填料在电解质中的比例,制备出了有机/无机复合凝胶态电解质膜,用场发射扫描电镜和电化学工作站对其微观结构以及离子电导率进行了表征。结果表明,聚偏氟乙烯(PVDF)与二氧化硅(SiO_2)的质量比为92:8时,所制备的复合凝胶态电解质膜结构较好,电导率达到最大,为2.4 m S·cm^(-1)。将所制备的有机/无机复合凝胶态电解质膜结合喷涂法制备的钼掺杂WO_3电致变色薄膜组装成电致变色器件,对其性能进行了研究。结果表明PVDF:SiO_2=92:8的复合凝胶态电解质所组装的电致变色器件展现出优异的电致变色性能。展开更多
采用循环扫描伏安法在导电聚酯薄膜上聚合出聚苯胺(PAN)膜,考察了 PAN 膜的聚合过程及其表现出的电致变色行为;设计并制备了基于 PAN 膜的反射型柔性电致变色器件,考察了该器件反射光谱的电压响应特性。结果表明,电聚合过程中,在-0.2～2...采用循环扫描伏安法在导电聚酯薄膜上聚合出聚苯胺(PAN)膜,考察了 PAN 膜的聚合过程及其表现出的电致变色行为;设计并制备了基于 PAN 膜的反射型柔性电致变色器件,考察了该器件反射光谱的电压响应特性。结果表明,电聚合过程中,在-0.2～2.0V 电压范围内,PAN 膜的颜色在黄绿-绿-深蓝之间循环变化;在-0.4V～1.8V 电压范围内,研制的基于 PAN 膜的反射型柔性电致变色器件的反射率及其峰值随着外加电压的改变而变化,表现出较好的电压响应特性。展开更多
文摘基于WO_(3)-NiO体系的电致变色(EC)玻璃具有优异的可见与红外的主动调控特性和节能效果,在建筑、新能源汽车等产业的应用得到越来越多的关注。生产效率与制造成本等因素的限制,使得大面积WO_(3)-NiO电致变色玻璃未规模化地投入市场。相比于在单一玻璃表面采用膜层堆栈方式制备多层膜结构的电致变色器件,以高性能锂离子胶膜为中间层,将磁控溅射沉积的Glass/TCO/WO_(3)以及Glass/TCO/NiO通过层压的方式组装成夹层式器件是一种可行地实现电致变色玻璃大面积、低成本规模化生产的技术手段,正逐渐成为器件制备技术的主流。然而,面向于大面积夹层式WO_(3)-NiO电致变色玻璃的低成本制造和新的应用需求,仍有必要开展从材料到器件的体系化研究。在材料端,开发兼容现有镀膜产线的高质量EC氧化物陶瓷靶材制备技术,高性能WO、NiO薄膜成分、结构、性能与色彩的调控技术,具备高离子电导率、高粘结强度、高热稳定、高透明且易于实现大面积规模化生产的锂离子胶膜材料及其制备技术等。在器件端,开发与现有玻璃产业兼容的大尺寸器件的层压工艺,弧型器件的制备技术,具备更高效节能且能呈现中性着褪色的器件技术等。针对上述挑战,综述了国内外相关研究团队在上述领域的研究进展,结果表明,可以制备出满足高性能电致变色薄膜沉积的EC氧化物陶瓷靶材,通过调节磁控溅射工艺参数可以有效实现对薄膜成份、结构以及性能调控,开发出满足层压工艺的、具有高离子电导率(1.51×10^(-4)S·cm^(-1))的固态聚合物电解质,最终利用商用高压釜实现30 cm×30 cm WO_(3)-NiO电致变色器件高质量制备。
基金Project supported by the National High Technology Research and Development Program of China(Grant No.2015AA034201)the Chinese Universities Scientific Fund(Grant No.2015LX002)
文摘Poly（3,4-ethylenedioxythiophene）：poly（styrenesulfonate）（PEDOT：PSS） is usually sandwiched between indium tin oxide（ITO） and a functional polymer in order to improve the performance of the device. However, because of the strong acidic nature of PEDOT：PSS, the instability of the ITO/PEDOT：PSS interface is also observed. The mechanism of degradation of the device remains is unclear and needs to be further studied. In this article, we investigate the in-situ electrochromism of PEDOT：PSS to disclose the cause of the degradation. X-ray photoelectron spectroscopy（XPS） was used to characterize the PEDOT：PSS films, as well as the PEDOT：PSS plus polyethylene glycol（PEG） films with and without indium ions. The electrochromic devices（ECD） based on PEDOT：PSS and PEG with and without indium ions are carried out by in-situ micro-Raman and laser reflective measurement（LRM）. For comparison, ECD based on PEDOT：PSS and PEG films with LiCl, KCl, NaCl or InCl_3 are also investigated by LRM. The results show that PEDOT：PSS is further reduced when negatively biased, and oxidized when positively biased. This could identify that PEDOT：PSS with indium ions from PEDOT：PSS etching ITO will lose dopants when negatively biased. The LRM shows that the device with indium ions has a stronger effect on the reduction property of PEDOT：PSS-PEG film than the device without indium ions. The contrast of the former device is 44%, that of the latter device is about 3%. The LRM also shows that the contrasts of the device based on PEDOT：PSS＋PEG with LiCl, KCl, NaCl, InCl_3 are 30%, 27%, 15%, and 18%, respectively.
文摘An amorphous,colorless,and highly transparent star network polymer with a pentaerythritol core linking four PEG-block polymeric arms was synthesized from the poly(ethylene glycol)(PEG),pentaerythritol,and dichloromethane by Williamson reaction.FTIR and ~1H-NMR measurement demonstrated that the polymer repeating units were C[CH_2-OCH_2O-(CH_2CH_2O)_m-CH_2O-(CH_2CH_2O)_n-CH_2O]_4.The polymer host held well mechanical properties for pentaerythritol cross-linking.The gel polymer electrolytes based on Lithium pe...
文摘通过控制无机陶瓷填料在电解质中的比例,制备出了有机/无机复合凝胶态电解质膜,用场发射扫描电镜和电化学工作站对其微观结构以及离子电导率进行了表征。结果表明,聚偏氟乙烯(PVDF)与二氧化硅(SiO_2)的质量比为92:8时,所制备的复合凝胶态电解质膜结构较好,电导率达到最大,为2.4 m S·cm^(-1)。将所制备的有机/无机复合凝胶态电解质膜结合喷涂法制备的钼掺杂WO_3电致变色薄膜组装成电致变色器件,对其性能进行了研究。结果表明PVDF:SiO_2=92:8的复合凝胶态电解质所组装的电致变色器件展现出优异的电致变色性能。
文摘采用循环扫描伏安法在导电聚酯薄膜上聚合出聚苯胺(PAN)膜,考察了 PAN 膜的聚合过程及其表现出的电致变色行为;设计并制备了基于 PAN 膜的反射型柔性电致变色器件,考察了该器件反射光谱的电压响应特性。结果表明,电聚合过程中,在-0.2～2.0V 电压范围内,PAN 膜的颜色在黄绿-绿-深蓝之间循环变化;在-0.4V～1.8V 电压范围内,研制的基于 PAN 膜的反射型柔性电致变色器件的反射率及其峰值随着外加电压的改变而变化,表现出较好的电压响应特性。
