These frames, which also transmit current to and from the electrodes, are normally made of metal, and are therefore rigid.
这些电池的组成框架也起着在电极之间传输电流的作用,它们通常是由金属材料制成,因此硬度很高。
But the two researchers reckoned that suitably treated wood could do the job of conduction equally well while providing more yielding support for an electrode that was continually expanding and contracting as ions moved in and out of it.
但是两位研究者认为,对木材进行适当的处理后,木材也能同样起到这种传导的作用,同时,当离子从电极间穿梭时,还能够更好地增加电极的柔韧性,使之能够持续地扩张收缩。
To test this idea, they used slivers of wood from yellow pines.
为了测试这种想法,他们从黄松树干上取了些木条子。
First, they coated these with carbon nanotubes, to improve their conductivity.
首先,他们在这些木条子外面包上了碳纳米,以提高它们的导电性。
Then they applied a film of tin to each sliver.
然后,在每个木条子上面涂上了薄薄的锡。
This done, they immersed the slivers in an electrolyte containing sodium ions and put the resulting battery through 400 cycles of discharging and recharging.
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