To get an idea of why nanoparticles, filling the same space as typically larger particles, have a much greater surface (active) area, imagine if you were measuring a specific section of a coastline.
One way to do this would be to drive down a paved road that parallels the beach, which in this case measures exactly one mile.
But suppose that you had an accurate pedometer (which measures the distance you walk) and you walked along the edge of this section of the beach, curving in and out as you followed the beach contours -- this way you\'d measure a distance that is longer than the one mile measured along the straight road.
Similarly, if you could follow the outline of each grain of sand at the edge of the beach, the vastly greater number of turns and twists along the outside of these particles would measure yet a FAR greater distance.
This is why using nanoparticles in the battery, or for many other uses, provides a far larger reactive surface area than larger......
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