搜索结果: 136-150 共查到“国际动态 电化学工程”相关记录303条 . 查询时间(0.702 秒)
Dendrites, whiskers of lithium that grow inside batteries and can cause fires like those in the Samsung Galaxy Note 7, are the bane of next-generation lithium batteries.While they usually spread under...
New electrical energy storage material shows its power
New electrical energy storage material power
2016/9/12
A powerful new material developed by Northwestern University chemist William Dichtel and his research team could one day speed up the charging process of electric cars and help increase their driving ...
Making a Solar Energy Conversion Breakthrough With Help From a Ferroelectrics Pioneer
Solar Energy Conversion Ferroelectrics Pioneer
2016/8/11
Designers of solar cells may soon be setting their sights higher, as a discovery by a team of researchers has revealed a class of materials that could be better at converting sunlight into energy than...
新技术可明察电池充电时内部粒子运动
新技术 电池充电 内部粒子运动
2016/8/8
电池性能的好坏对电子设备来说至关重要。充电时间短、持续时间长,是所有人对目前广泛使用的锂离子电池的期望。最近,美国能源部劳伦斯伯克利国家实验室和斯坦福大学等机构的研究人员合作,开发出一种新的X射线显微镜(STXM)技术,可细致地观察锂离子电池充放电过程中的粒子活动情况,这或有助于开发出性能更强大的锂离子电池。
Researchers at the University of California, Riverside have created a new silicon-tin nanocomposite anode that could lead to lithium-ion batteries that can be charged and discharged more times before ...
美国成立机构研发电动汽车电池新技术
美国成立机构 电动汽车电池新技术
2016/8/3
美国多家国家实验室和大学近日共同组建一个名为“电池500”的研究中心,着力研发可以延长电动汽车行驶里程、降低电动汽车造价的新型锂电池技术。日前,美国联邦政府公布了关于加快普及电动汽车的计划,通过政府与私营部门合作,推广电动汽车和加强充电基础设施建设,以应对气候变化、增加清洁能源使用并减少对石油的依赖。成立“电池500”、研发高性能电池就是该计划的一部分。美国能源部将在今后5年里每年为这个机构提供1...
新型电池纤维素隔离膜问世
新型电池纤维素隔离膜 韩国蔚山国立科技学院
2016/7/26
为防止电池漏电短路,通常要在电池两极间涂一层多孔薄膜进行隔离。最近,韩国蔚山国立科技学院研究人员设计了一种纤维素纳米垫(c-mat)隔离膜,在一层较厚的大孔聚合物上加了一层薄薄的多孔纤维素,有效解决了传统电极隔离膜难以兼顾防漏电与离子高效传输的矛盾。
New lithium-oxygen battery greatly improves energy efficiency,longevity
New lithium-oxygen battery energy efficiency longevity
2016/8/1
Lithium-air batteries are considered highly promising technologies for electric cars and portable electronic devices because of their potential for delivering a high energy output in proportion to the...
不让太阳能电池内的能量以热的形式散失 热光伏设备或使光电转换率突破极限
太阳能电池 光电转换率
2016/5/27
据美国麻省理工学院官网消息,该校科学家首次证明,使用太阳热光伏设备(STPVs),太阳能电池的光电转化效率有望突破理论限制。最新研究的基本原理很简单:不让太阳能电池内无法使用的能量以热的形式散失,所有能量和热首先被一个中间元件吸收,让元件达到能释放热辐射的温度。通过调谐添加层的材料和构造,辐射能以合适波长的光释放出来,而这一波长的光刚好能被太阳能电池捕获,从而提高系统的光电转化效率并降低太阳能电池...
用萘能开发出锂电池负极材料
萘 锂电池负极材料
2016/5/27
日本东北大学和东京大学的一个联合研究小组首次用家用防虫剂原料——大环状有机分子萘,开发出一种全固体锂离子电池的负电极材料。用这种新材料(CNAP)制成的负极电容量比石墨电极高两倍,且经过65次冲放电后仍能保持原来的大容量状态。
This “nanocavity” may improve ultrathin solar panels,video cameras and other optoelectronic devices
nanocavity ultrathin solar panels video cameras other optoelectronic devices
2016/5/19
The future of movies and manufacturing may be in 3-D, but electronics and photonics are going 2-D; specifically, two-dimensional semiconducting materials.
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Under Pressure:New technique could make large,flexible solar panels more feasible
Under Pressure flexible solar panels
2016/5/19
A new, high-pressure technique may allow the production of huge sheets of thin-film silicon semiconductors at low temperatures in simple reactors at a fraction of the size and cost of current technolo...
Kansas State University engineer builds paperlike battery electrode with glass-ceramic
Kansas State University engineer paperlike battery electrode glass-ceramic
2016/4/13
A paperlike battery electrode developed by a Kansas State University engineer may improve tools for space exploration or unmanned aerial vehicles. Gurpreet Singh, associate professor of mechanica...
迄今最轻薄太阳能电池问世厚度仅为普通光伏电池千分之一
太阳能 电池
2016/3/7
帽子、窗户、白纸、气球,倘若它们都能发电,那会怎样?美国麻省理工学院的科学家开发出一种超轻、超薄的柔性太阳能电池,能附着在许多物体之上。即便是“躺”在一个肥皂泡上也不会让泡泡变形。该材料潜力巨大,对重量较为敏感的应用,如航天器或高空探测气球等有重要价值,有望为太阳能电池应用开创出许多全新领域。
麻省理工学院称,这种太阳能电池主要由基底和涂层两部分组成,厚度仅为2微米,相当于人类头发直径的五十分之...
An interdisciplinary team of scientists has worked out a way to make electric vehicles that only are not only carbon neutral but carbon negative, capable of actually reducing the amount of atmospheric...