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  3. IBM research has announced a breakthrough in battery technology that it says could make lithium-ion batteries a thing of the pas

IBM research has announced a breakthrough in battery technology that it says could make lithium-ion batteries a thing of the pas

admin2022-01-20  62
问题     IBM research has announced a breakthrough in battery technology that it says could make lithium-ion batteries a thing of the past. The new technology can charge incredibly quickly, has low flammability, and contains no heavy metals, making it far more environmentally friendly than current battery technology.
    Battery performance complaints are nothing new: Lithium-ion batteries have long been one of the most frustrating parts of modern technology. They go bad, charge slowly, are prone to exploding, and are horrible for the environment. IBM’s new battery reportedly eliminates those exact headaches.
    IBM is keeping quiet about how its new battery is made, only saying that it’s made of "three new and different proprietary materials, which have never before been recorded as being combined in a battery."
    The three components, IBM said, can all be extracted from sea water, meaning the environmental damage from, and humanitarian cost of, mining heavy metals for batteries could be eliminated.
    Extracting battery components from sea water also reduces costs, IBM said, making this new battery not only better for the environment and people, but also potentially more affordable.
    Environmental friendliness isn’ t the only thing that IBM’ s new battery has going for it. According to IBM, tests of the new battery "proved it can be optimized to surpass the capabilities of lithium-ion batteries in a number of individual categories including lower costs, faster charging time, higher power and energy density, strong energy efficiency and low flammability."
    That faster charging time IBM mentioned is one of the standouts of its report on this battery breakthrough: It can reportedly reach an 80% charge in just five minutes, all without compromising discharge capacity.
    Along with that impressive recharge rate are several other performance improvements, IBM said: It can reach a power density of more than 10,000 watts per liter; It can reach an energy density of more than 800 watt hours per liter, which is comparable to modern lithium-ion batteries; It has an energy efficiency (defined by IBM as "the ratio of the energy to discharge the battery over the energy to charge the battery") of over 90%.
    IBM mentions that the battery can be configured in a number of different ways, making it ideal for multiple use cases from new energy infrastructure to electric vehicles.
    While IBM hasn’ t revealed whether its new battery technology has progressed beyond the testing phase, its blog post about the breakthrough uses promising language about its potential applications as a lithium-ion replacement.
Which of the following is NOT the disadvantage of lithium-ion batteries?
选项 A、They are easy to burn.
B、They cost long to discharge.
C、They are heavy to carry.
D、They do harm to the environment.
答案C
解析 细节题。根据题干定位至第一、二段，这两段从新电池技术的优点和现存锂离子电池的缺点两方面展开描述。根据文意。现存锂离子电池的缺点有：容易老化，充电变缓，易燃易炸，对环境污染极大。因此可排除A、B、D三项。需注意原文中的heavy metal指“重金属”，而非质量重的金属，C项“太重而难以携带”符合题意。
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