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Lithium-Ion batteries will still be the power source of choice for notebooks in the foreseeable future

There have been battery recalls announced in the past few months involving names such as Dell, Lenovo, Apple, Toshiba, Matsushita/Panasonic, and Fujitsu. The seemingly weekly recall announcements have had many industry watchers and consumers asking for alternatives to current battery technology. But for all the talk of exploding batteries and with recalled units now topping the 7 million, the industry will be sticking with lithium-ion batteries for the foreseeable future.

As shocking as the number of recalls may seem, there have still been fewer than 50 incidents involving the faulty batteries. Also, companies like Hewlett-Packard have yet to announce recalls for its Sony-manufactured batteries and has no plans to do so. The company is confident in the safety of its battery packs and lithium-ion batteries as a whole.

Quite frankly, there really is no credible alternative to lithium-ion technology at the moment. For all the talk of fuel cell technology, which Toshiba recently had on display, the infrastructure to make such technology viable for consumers is not yet in place. eWeek reports:

Moreover, although the recalls have sparked moves by some in the PC industry to increase the care with which lithium-ion cells are manufactured—one group is working to establish universal cell manufacturing standards, for example—there appear to be few lithium-ion alternatives on the horizon at the moment that don't involve trade-offs in energy density, cost or both. Some options, such as zinc-silver batteries, use entirely different chemistries, while others reformulate lithium-ion designs by introducing new materials. Numerous manufacturers are also designing fuel cells, which convert hydrogen into electricity. But none are without challenges, ensuring that in the absence of a dark horse replacement candidate, lithium-ion or some version of the chemistry is likely to power notebooks for years to come.

So while we may not see an alternative to lithium-ion technology take over in the near future, there are other ways to squeeze more run time out of notebooks. The Mobile PC Extended Battery Life (EBL) Working Group is collaborating to ensure that business notebooks will be able to operate for eight hours on a charge by the year 2008. The group is working to develop 72-watt hour batteries, 3-watt 14" and 15" XGA LCD panels and dramatically reduce power requirements in processor/chipset designs to achieve this goal.

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RE: 24-hr laptop
By number999 on 10/10/2006 3:05:06 PM , Rating: 2
At present prices there is only about 25-30 years of uranium. Of course as prices go up the supply increases.

The majority of reactors in the world are light water reactors that have a tendency to absorb neutrons, that is the main reason for the enrichment process. Heavy water reactors like the CANDU can use regular Uranium as fuel as well as enriched fuel since heavy water doesn't absorb neutrons as much. The "waste" from a regular light water reactor can be ground up and used to fuel a heavy water reactor, at least for a little while. This is being done in South Korea.

The Uranium left is usually non-radioactive. It's the U turned to Plutonium that is the radioactive part as well as the other radioactive components like Strontium. The really dangerous stuff is the Plutonium which is highly poisonous and long lived. Other radioactive fuel cycles would be Thorium, which can be transmutated into radioactive Uranium, which is way more abundant than U-235.
Breeder reactors would be necessary but no country has really developed the technology extensively. The closest would the Phoenix and Super-Phoenix in France used to accelerate the break down of nuclear waste.

Gas cooled reactors provide an interesting technology because the most proposed coolant is He. When irradiated, the isotopes are short lived and the radiation is, I think, Beta radiation.

Should nuclear fuel be recycled? Yes but internationally, there is fear of nuclear proliferation with the material. Also no one wants nuclear material moving through where they live. Lastly the cost of recycling the material is prohibitive.

As for fanaticists calling themselves environmentalists. Well I like to think of myself too as an environmentalist and I'm no fanatic but look at the fore front of the movement. For years they have been banging their heads against the wall trying to get stuff to happen and nothing happened for years. They really don't have a lot of power but the power of their voices and in the majority of cases they really don't win. Society and corporations have worked around them. What's their reward? It's definitely not a lot of bucks.

Also, environmentalists are comprised of many different opinions. I believe the Sierra club and a couple of the original Greenpeace members support nuclear power. They too are pragmatic enough to realize that consumption is not going down and that we need to statisfy a large number of stakeholders if anything we do is to succeed.

"Folks that want porn can buy an Android phone." -- Steve Jobs
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