Polymer lithium secondary battery of the present and future

Advancement of technology, cell phones, notebook computers and other electronic information products has become an indispensable part of life. In the new generation of information on the design of electronic products are currently facing "light, thin, short, small" trend, so the power supply is a pressing problem. Therefore, the function of small secondary NIKON EN-EL10 Battery has been decided with the characteristics of a new generation of wireless communications and notebook computers, portable electronics market, a key factor of competitive advantage.

Currently on the market used mainly nickel-metal hydride rechargeable batteries (Ni-MH) and lithium-ion (Li-ion) two, and with the generation of portable electronic products more widely, increasing market demand more, these cells also increases the demand. The lithium CANON LP-E10 battery secondary battery, for example, the global market in 1997, total sales reached NT $ 50 billion, and the continued rapid growth in.

Seeing the majority of the market, the major battery companies in this market segment in order to gain a leading position, it is committed to developing higher energy density, can be small and thin, lightweight, high security and low-cost, next-generation New secondary battery system. In many of the new batteries, rechargeable lithium polymer (Li-polymer) battery as with the above-mentioned advantages, it is strongly developed by various manufacturers target.

The main structure of the battery generally includes a cathode, anode and isolation paper three elements. The so-called polymer lithium secondary Sony VGP-BPS9/S Battery is that the three main structures in the medium to have a one or more polymer materials used as the main battery system. In the current development of polymer lithium secondary battery systems, polymer materials are used in the cathode and electrolyte values. Cathode materials include conductive polymers, organic sulfur compounds, or lithium ion secondary battery is generally used in inorganic compounds. You can use the solid electrolyte or gel-state polymer electrolyte, or organic electrolyte; cathode is usually carbon-lithium metal or lithium intercalation compounds.

If you take lithium polymer secondary IBM THINKPAD A31 Battery with lithium-ion secondary market now point the pool to do more, you can find both in polymer lithium secondary battery shape, charge and discharge, reliability and environmental issues so that there is considerable development. In shape, the polymer can lithium secondary battery with thin, then it can be any size and any shape of a number of other advantages, it can meet the demand, made of any shape and capacity of the battery. In the charge-discharge characteristics, the polymer lithium-polymer secondary battery can be used as cathode material and lithium metal anode, its weight will be lower than the current energy density of lithium ion secondary battery to 50% or more. In the trust property is concerned, because the polymer electrolyte lithium secondary battery using polymer materials, no leakage and combustion safety concerns about explosions.

As the polymer lithium Mini 9 battery secondary batteries have many advantages, many companies have now launched the commercialization of polymer lithium secondary batteries, including Japan's Hitachi Maxell, Yuasa, Toshiba, United States, Ultralife, Moltech and Canada Electrofuel other companies, but the emphasis is in its ultra-thin features. In general, the thickness of polymer lithium secondary battery is about 2 ~ 4mm, and the current lithium-ion secondary battery is a minimum thickness of 6mm, can be reduced by at least 50% of the thickness, thus providing manufacturers design products a large flexible space.

Polymer lithium secondary battery of the future technology outlook, Japan's Hitachi Maxell Division of Plant Industry, Mr. Gu Qingxiong held in August 1998 the 8th back to the Fine Process Technology Conference to propose the following:

1 battery of large and thick-

Polymer lithium secondary dell xps m1730 battery can be used tortuous, winding stack or other methods to improve the capacity of the battery. Polymer lithium secondary battery can now reach a minimum thickness of about 0.5mm, to A5 size (150x200), for example, if the increased thickness of 4mm, the battery capacity can reach 2.5 ~ 3Ah the practical level. Polymer lithium secondary batteries because of the small size, the length and width of the battery can with the need to change, so engineers can actually available with the product space to design the battery, and get the required power characteristics.

2.Biploar battery

Sony notebook battery electrodes can be used side by side the way to increase the battery voltage, but the currently available liquid electrolyte batteries, because the problems it will cause short circuit is completely impossible. But for polymer lithium secondary batteries, because it is a solid electrolyte system, so you can use this way to reduce Toshiba notebook battery size and container costs. If you can use this technique and previously mentioned large-scale, thick-oriented co-operation.