搜索结果: 301-315 共查到“国际动态 化学工程”相关记录662条 . 查询时间(2.421 秒)
便携式微生物反应器可按需制药
便携式微生物反应器 按需 制药
2016/8/4
据美国麻省理工学院（MIT）网站最近消息，该校研究团队在国防部先进研究项目局（DARPA）资助下，开发出一种便携式微生物反应器，能按需产出多种生物药品，为个性化药物生产提供了一种可行的途径。生物制药通常是在大规模、集中化的发酵工厂进行，然后再运往各个医疗机构。在战场和偏远地区，要迅速获得病人所需药物有很大困难。MIT电子学研究实验室合成生物学集团负责人蒂姆·陆说，如果每个人都需要自己的药物生产线是...
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
2016/7/25
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...
Rice’s ‘antenna-reactor’ catalysts offer best of both worlds
Rice’s antenna-reactor catalysts both worlds
2016/7/18
Each year, chemical producers spend billions of dollars on metal catalysts, materials that spur or speed up chemical reactions. Catalysts are used to produce trillions of dollars worth of ch...
Researchers improve catalyst efficiency for clean industries
Researchers catalyst efficiency clean industries
2016/7/7
Researchers have developed a way to use less platinum in chemical reactions commonly used in the clean energy, green chemicals and automotive industries, according to a paper published this week in Sc...
Converting the greenhouse gas carbon dioxide into a useful chemical would be highly desirable. However, the catalysts available to date have not been efficient enough.Researchers have discovered a cat...
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。
Appalachian Coal Ash Richest in Rare Earth Elements
Appalachian Coal Ash Rare Earth Elements
2016/5/27
A study of the content of rare earth elements in U.S. coal ashes shows that coal mined from the Appalachian Mountains could be the proverbial golden goose for hard-to-find materials critical to clean ...
This “nanocavity” may improve ultrathin solar panels,video cameras and other optoelectronic devices
nanocavity ultrathin solar panels video cameras other optoelectronic devices
2016/5/13
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
2016/5/13
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...
Catalyst could make production of key chemical more eco-friendly
Catalyst key chemical eco-friendly
2016/4/7
The world has more carbon dioxide than it needs, and a team of Brown University chemists has come up with a potential way to put some of it to good use.The researchers developed a new composite cataly...
Kansas State University engineer builds paperlike battery electrode with glass-ceramic
Kansas State University engineer paperlike battery electrode glass-ceramic
2016/3/31
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...