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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  59
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.
The following are the improvements of the new batteries EXCEPT that________.
选项 A、the efficiencies of charging and discharging are largely upgraded
B、they are recyclable
C、the components don’t contaminate the environment
D、the costs are lower
答案B
解析 细节题。根据文意可知，新电池的优点分别有：成本更低，充电更快，功率、能效和能量密度更高，易燃性更低，且环保。因此A项“多种性能得以提升”、C项“其原料不会污染环境”和D项“成本变低”符合文意，故排除。B项“新电池是可回收利用的”原文并未提及，符合题意。
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