Of the next generation of battery technology - fuel cell
With the increasing lack of natural resources and increase the environmental awareness of people, dell laptop battery today's fuel cell development has been more attention and rapid development of fuel cell is a chemical energy directly to efficient, environmentally friendly and energy into the electrochemical device It is a green energy, energy conservation and environmental protection while addressing two major challenges the world dell inspiron 9400 battery, dell inspiron xps m170 battery, dell inspiron xps m1710 battery, so Western countries such as Japan, the United States and Europe have a fuel cell research and development program, China is also accelerating the process of fuel cell research, the development of fuel cells today nearly 200 years of history, which truly is a world wide attention in the 20th century, 50's, Dell Latitude D620 Battery, Dell 312-0386 Battery, Dell PC764 Battery, Dell TD175 Battery,from today, but also about 50 years, but fuel cell technology development is rapid.
Power gap calls for a new power technology
Portable electronic products in the global popularity of the increasing appearance of their products as well as the function of small light to the battery has become increasingly complicated and new challenges, and in addition to laptops, mobile phones and digital cameras, Dell TD175 Battery,other products, there are also similar to the power supply gap . Existing rechargeable battery technology has matured, but the lithium-ion rechargeable battery capacity is not much room for improvement (less than 5% per year), in meeting growing energy demand will be much more difficult. But in the next few years is expected inside the existing battery technology will not be able to meet the growing portable electronics products of the energy demand, new power technologies and products will be a huge market space and opportunities.
People's mobility more than ever before, and then expand the power of the gap. Notebook computer is the fastest growing areas, is expected shipments in 2006 to more than 50 million. Widespread adoption of Wi-Fi technology has actually cut off the shackles of Ethernet, and users will be the last hope is the path to remove the AC power cable, which is even more to promote a new battery technology.
The development of fuel cells
Because of its high energy conversion efficiency, clean and pollution-free, modular structural advantages and strong, fuel cells become the target of concern to the industry, to meet the immediate needs of the revolutionary power, fuel cells become a really strong player preparation. As early as 1839, British scientists made W Grove on the principle of generating hydrogen and oxygen reaction, which is the first hydrogen fuel cell (FC) model. So far fuel cells mainly four kinds of types,Dell PC764 Battery, they are as shown in table 1.
Table 1 Classification of fuel cells
The type of phosphate-type fuel cell (PAFC) into the carbonate-type fuel cell (MCFC) Solid Oxide Fuel Cell (SOFC) polymer ion-exchange membrane fuel cell (PEMFC)
Fuel gas, natural gas,Dell Latitude D620 Battery, Dell 312-0386 Battery, Dell PC764 Battery, Dell TD175 Battery, coal gas as early as alcohol, natural gas, coal gas as early as alcohol, natural gas, pure alcohol as early as H2
KLiCO aqueous phosphoric acid electrolyte salt dissolved ZrO 2-Y 2 O 3 (8YSZ) ions (Na ions) pa3285u-1brs battery, pa3285u-2brs battery, pa3284u-1brs battery, toshiba tecra a1 battery
Porous graphite anode (Pt catalyst) porous nickel (not to Pt catalyst) Ni-ZrO2 cermet (not to Pt catalyst) porous graphite or Ni (Pt catalyst)
Pt cathode catalysts with porous graphite + + Tefion porous NiO (Li-doped) Laxsri-Mn (Co) O 3 porous graphite or Ni (Pt catalyst)
More than four kinds of fuel cells have their own characteristics, but also their different technical barriers and the development direction, but as a member of the fuel cell, they have the same general character, for which, combined with the characteristics of various types of batteries, fuel cells are summarized in the research and development should focus on several aspects.
Electrolyte membrane: H + only allows through, but did not break down the fuel does not allow infiltration of the past. Therefore, to study the electrolyte membrane including the proton conductivity of the electrolyte membrane, gas and other fuels to reduce the infiltration capacity, and enhance the redox and hydrolytic stability, improve the mechanical strength and thermal stability, in order to improve the surface properties and is suitable for catalyst combination. In addition,Dell 312-0386 Battery, we must reduce costs and improve value for money.
Electrode: mostly due to fuel cell electrode as a gas electrode process, we must use a special electrode structure - porous gas diffusion electrode to improve battery life than the power.
Fuel: Study of fuel is the fuel of choice. At present, fuel cell applications, the main use of H 2 and CH 3 OH. Research on the replacement of fuel, fuel cells will enable the development of more sustainable.
System Architecture: System structure of the final results of the fuel cell. Because of the small fuel cell or micro fuel cell will be used in conjunction with the integrated circuit, so the development of system architecture is limited. How to carry out high-density fuel cell assembly, the realization of portable electronic devices in the application of fuel cells,Dell Latitude D620 Battery, Dell 312-0386 Battery, Dell PC764 Battery, Dell TD175 Battery, has become one of research directions.
Catalyst: A fuel cell system must be high efficiency and high specific energy. To obtain high efficiency and high specific energy, it is necessary to improve the gaseous fuel and oxidizer in the process of the electrode reaction, namely, research and development of efficient catalysts. Dell Latitude D620 Battery,At present, the use of other inexpensive and effective catalyst for the replacement of the precious metal catalyst to become one of the catalysts.