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US RPI developed carbon nanotubes

New York State Technological University – Kokak klic-5001, Kokak klic-7001 Rensselaer Polytechnic Institute (RPI) announced the development of cellulose and carbon nanotubes by the electric double layer capacitors, as well as the composition of Li-ion battery (in English published data). The thickness of these components is only tens of μm, the thickness of a human hair can be like a paper-bending. RPI researchers that "the future can take advantage of Roll to Roll printing technology manufactured batteries." Technical details will be August 21, 2007 published in the academic journal "Proceedings of the National Academy of Sciences" published.

RPI development of the following results: (1) developed to enable multi-layer carbon nanotubes (MWNT: multi-walled nanotubes) in order to form a brush shape as the main components of cellulose, cellulose membrane; (2) the use of two cellulose membranes made of electric double layer capacitors; (3) using a cellulose membrane and lithium electrode made of lithium batteries.

Cellulose membrane as porous membranes, use of the former need to penetrate up to 25% of the weight ratio of ionic liquids, etc. (RTIL: room-temperature ionic liquid) – [Bmin] [Cl] (1-butyl ,3-methylimidazolium chloride). RPI will be two of the film laminate, so that MWNT brush outwards, and then in the lateral formation of titanium (Ti / Au) film as an electrode, made of electric double layer capacitors. On the other hand, lithium batteries is to give a film together with the lithium Kokak klic-7004, Kokak cr-v3, canon bp-511 electrode paste in the middle clip into lithium hexafluorophosphate (LiPF6) ionic liquid electrolyte instead of the outer aluminum foil electrodes attached. Two kinds of components, manufacturing methods were not open.

Electric double layer capacitor used in [Bmin] [Cl] ionic liquid has not volatile and so can be in a larger temperature range stability. Such ionic liquids through cellulose membrane pore diameter of 50 ± 5nm contact with the charge.

In the frozen bank and in vivo work can

The performance of electric double layer capacitor is as follows: electrostatic capacity of 22F / g, maximum operating voltage of 2.3V, the energy density of about 13Wh/kg, capacity of the existing electric double layer capacitor level. The weight per unit area of only 15mg/cm2, very light, and because [Bmin] [Cl] does not contain moisture, so the device operating temperature range is very large, reaching -77 ~ +150 ℃. The device, when the temperature dropped to -196 ℃ Although it is impossible as a capacitor, but the temperature rise after full recovery. RPI is now confirmed that the components in repeated charge and discharge over 100 times, they could still maintain good features.

RPI said that apart from ionic liquids, the use of the component potassium canon nb-2l, canon nb-2lh, canon nb-4l hydroxide (KOH) aqueous solution and human blood, sweat, urine and other body fluids as the electrolyte to achieve the same performance of the work. Therefore, the body is also expected to work as a pacemaker and other equipment with batteries.

Capacitor and rechargeable batteries for hybrid components are also expected to realize

Lithium battery charging voltage up to 3.6V, in order to 10mA / g for a fixed output power of discharge. Battery capacity in the first charging up to 430mAh / g, but the 2nd charge will be reduced to 110mAh / g below.

In the future, RPI plans to build integrated electric double layer capacitors and lithium batteries for hybrid components. The component is estimated to be, "which can play both characteristics of the capacitor and rechargeable batteries fully mixed" (RPI).

Create the world’s largest production base of cathode materials for rechargeable batteries

Jiangmen City U Industrial Co., Ltd. a leading business to nickel-cadmium, nickel metal hydride and lithium ion rechargeable batteries provide more variety of areas of cell materials. Registered capital of 500 million U.S. dollars, a total investment of 1,000 million U.S. dollars. Company’s leading product of casio np-20, casio np-100, minolta np-600 spherical Ni (OH) g product R & D and production and sales volume of China’s first home, second in the world currently has about 50% of domestic market share. Excellent since the establishment of a long industrial average monthly pre-tax sales of more than 30 million yuan.

The company belongs to the State Torch Plan New Material Industry Base in Jiangmen base backbone enterprises, has been focusing on scientific and technological progress in the role of enterprise development, adhere to technology leadership strategy, the industry has always been on the same advanced level of research funding each year invested more than 18 million yuan. Company’s commitment to four Torch Plan in Guangdong Province, industrial research and major special projects undertaken by both the subject of international advanced level. Long U company to participate in the field of secondary battery business is a global leader, currently owns the only cover the domestic nickel-cobalt balls bulk industrial capacity, including follow-cobalt (Ⅲ) products on behalf of Ni-MH, Ni-Cd secondary battery cathode material Division of the highest international standards; company’s products for many years has been in short supply situation, and guide the battery industry’s technological progress and industrial upgrading, and is expected in two to three years, the world’s largest production base of cathode material for rechargeable Sony np-f970, Sony np-bg1 batteries.

Chunlan high-energy battery technology to achieve new breakthroughs in

Relying on the newly formed Jiangsu (Taizhou) Clean Energy Research Institute, recently, Chunlan in power nickel-hydrogen battery electrolyte research breakthrough. It is reported that this is an environmentally friendly, low cost, safe and efficient nickel-metal hydride battery electrolyte, electrochemical energy storage and energy conversion has an important role.

Related information, high-power, high-energy battery energy storage and conversion is a very complex electrochemical process, which requires not only an advanced new types of technology, equipment and materials, but also need to have a wide field of scientific research personnel, interdisciplinary knowledge, as It requires a variety of knowledge convergence and multiple experiments can be achieved breakthrough progress.

Battery experts said that a number of tests proved that Chunlan developed the electrolyte applied to the power of this new nickel-metal hydride batteries, the battery has a better charge-discharge cycle characteristics, the battery anode material is less corrosive, there is no clear pink nikon en-el3, nikon en-el4 , nikon en-el4a, and its energy storage type power than ordinary Ni-MH battery with more than 25%, the conversion efficiency of more than 10% higher, and there is no harm to the environment.

It is understood that Chunlan from 1993 began to implement the new energy plan, Energy Engineering Center was established in 1997, in-depth study of nickel-metal hydride battery and its basic technology; in 2002, creating the first one with independent intellectual property rights of domestic power nickel-metal hydride battery; 2003 years of commitment to the State "15" 863 major projects planned high-speed maglev train, "Ni-MH battery applied research" subjects; 2004 commitment to the State Development and Reform Commission Enterprise Technology Center innovation capacity-building projects "Nickel hydrogen power research and development capacity-building" tasks; 2005 the first in China for auto-motive power assembly design concept, has formed a patent 32, enterprise standard 5; 2006 commitment to national "Eleventh Five-Year" Plan 863 energy-saving and new energy vehicles on major projects, "hybrid electric vehicle nickel metal hydride Power supply system development and large-scale applications "subject; in 2007, within its Enterprise Institute set up in Jiangsu (Taizhou) Clean Energy Research Institute – energy storage and conversion applications engineering technology research center. At present, Chunlan in power Ni-MH battery (group) and its power management system is already in the domestic olympus li-10b, olympus li-12b, samsung sb-lsm160 leading position.

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