【直播】国际交流合作系列会议之新能源材料专题(六)

直播信息

活动名称

国际交流合作系列会议之——新能源材料专题(六) 

活动时间

2022年5月13日（周五）14:30-18:30

主办方

西安建筑科技大学

直播二维码

近年来，国际学术会议日益成为人才培养、学术交流、科学研究、技术创新、合作交流的重要平台。“国际交流合作系列会议之新能源材料专题”旨在举办专业性强、学术价值高、学科领域广的国际学术会议。国际交流合作系列会议依托西安建筑科技大学国际交流合作处/港澳台办公室的引智基地项目为依托，由西安建筑科技大学云斯宁教授主持。会议邀请不同领域的专家学者进行学术交流，促进新能源领域的相关学科发展，为开展深入而富有实效的学术交流合作提供有力支持，为相关领域的国际化人才培养提供更多的交流途径和平台。

Invited Speaker 1:

Managing Editor,

Whitney Xu

OAE Publishing Inc., Energy Materials

Title: Introduction of a New Journal--Energy Materials

Time: 2022.05.13, Friday afternoon;

PM 2:30-2:35 (Beijing Time)

Invited Speaker 2:

Prof. Feng Yan；

Soochow University, China

Title: Poly(ionic liquid)-based Electrolytes for Energy Devices

PM 2:35-3:35 (Beijing Time);

40-50 mins+ 10 mins discussion.

报告题目：聚离子液体电解质与能源器件

报告摘要：随着新能源交通工具，便携式电子产品的飞速发展，燃料电池、锂离子电池及超级电容器等能源器件已经引起越来越多的关注，极具有应用前景。但迄今为止，作为电池的核心组件之一，电解质材料的热稳定性、电化学稳定性没有得到很好的解决，使得电池仍然存在电化学窗口较窄和易燃易爆等安全问题，限制了其寿命与实际应用。离子液体具有低挥发度、高电导率，以及电化学窗口宽等优点，成为耐高压，高安全性电解质材料的理想选择，在能源器件领域具备非常好的应用前景，并在液态、(准)固态电解质及粘结剂领域并展现出了巨大的应用潜力。本报告将介绍(聚)离子液体电解质材料在能源器件中的应用进展。

Invited Speaker 3:

Prof. Peng Wang

Zhejiang University University, China;

Title: Dye-Sensitized Solar Cells: the Present Status, Challenges, and Future Chances

PM 3:35-4:35 (Beijing Time);

40-50 mins+ 10 mins discussion.

Title of the Participation：Dye-Sensitized Solar Cells: the Present Status, Challenges, and Future Chances

Abstract：Dye-sensitized solar cells (DSCs) have been attracting a large amount of research interest in view of the extreme potential of converting solar and artificial light to electricity at low cost, and have reached a power conversion efficiency (PCE) record of 14.5% measured under the simulated AM1.5G sunlight. This glorious accomplishment embodies over 10 years intense studies on metal-free organic dyes, single-electron redox shuttles, molecular-scale interface engineering, and device physics. Predictably, the development of more powerful metal-free organic dyes could well address the economic efficiency of a DSC, on primary account of copious raw materials and versatile synthetic methodologies. To further raise the PCE of a DSC, the realization of harvesting photons in the infrared region of the solar emission spectrum will be of paramount importance in the future explorations, mainly via narrowing the optical energy gap of a dye molecule. However, a reduction of HOMO/LUMO energy gap of a dye molecule is certainly concomitant with either a stabilized LUMO energy level or a destabilized HOMO energy level, or even both. These energetic changes are very much possible to exert unfavorable influences on the yields of generating long-lived charge carriers and thus lower external quantum efficiencies (EQEs), although many published papers claimed ultrafast electron injection kinetics or even femtosecond kinetics. Recent studies by several international groups have also indeed questioned these observations. While the widely used femtosecond transient visible/near infrared absorption measurements are not easy to make clear the dynamic picture, femtosecond broadband photoluminescence experiments do suggest that the electron injection kinetics are not so fast as previously thought. This issue could be better clarified in future studies by ultrafast vibrational spectroscopy techniques to unveil the kinetic picture and pave the way for coming materials development. Additionally, the open-circuit photovoltage of a DSC is notably dominated by the thickness and pinhole defect of self-organized dye layers, lying spatially at the boundary of electron-transporting titania and hole-transporting redox electrolyte. In this talk, I will select several examples from our studies to address these issues.

Invited Speaker 4:

Prof. Yuan Lin 

Institute of Chemistry, CAS, China

Title: Principle and Prospect of Dye-Sensitized Solar Cells

PM 4:35-5:35 (Beijing Time);

40-50 mins+ 10 mins discussion.

报告题目：染料敏化太阳能原理及展望

报告摘要：太阳能是容量最大的可再生能源，只要得用其中万分之一就可满足现有人类能源需求。太阳能电池发电是重要的应用方式。上世纪末硅太阳能电池的价格在每瓦40元左右，并且由于需求旺盛价格还有上升的趋势。就在此时染料敏化太阳能电池应运而生。一方面其新颖的结构、简便的制作工艺、低廉的成本和较高的光电转换效率对相关产业具有吸收力，根据材料成本估算，染料敏化电池的价格可以低至每瓦5元左右；另一方面，染料敏化太阳能电池是一种有机-无机复合太阳能电池，其不同于传统太阳能电池的独特的工作原理和高的光电转换效率，也吸引了世界上各国科学家的目光，来探索其内在的机理，并尝试提高其光电转换效率。应用和理论两方面的推力使得染料敏化太阳能电池自诞生起就受到广泛关注，并投入了大量人力、物力进行相关研究。

染料敏化电池涉及了无机纳晶半导体、有机染料、电解质、氧化还原对、催化对电极等很多相关的研究方向。近三十年来对染料敏化太阳能电池的探索获得了大量的科研成果，开发出大量宽光谱有机染料料，新结构纳米半导体材料，高性能氧化还原电对及高催化活性对电极，这些研究成果对于光化学、电化学、电催化等领域的研究都有很大促进，并催生了量子点敏化电池和钙钛矿太阳能电池的诞生。

扩展阅读

 

编辑：黄琦

蔻享学术平台，国内领先的一站式科学资源共享平台，依托国内外一流科研院所、高等院校和企业的科研力量，聚焦前沿科学，以优化科研创新环境、传播和服务科学、促进学科交叉融合为宗旨，打造优质学术资源的共享数据平台。

版权说明：未经授权严禁任何形式的媒体转载和摘编，并且严禁转载至微信以外的平台！

---

原创文章首发于蔻享学术，仅代表作者观点，不代表蔻享学术立场。

转载请在『蔻享学术』公众号后台留言。

点击阅读原文～发现惊喜！