Now, it seems, adding some water to the electrolyte of a silicon-air battery could increase its discharge rate by a massive 40 percent. Researchers from Israel Institute of Technology report that the addition of 15 percent water by volume leads to an increase of 40 percent in the silicon-air battery's discharge capacity. However, if the water content exceeds 20 percent by volume, the cell's capacity decreases dramatically. What this study apparently shows is that silicon-air battery technology is ideal for humid environments, where the cell's performance improves instead of decline as some other air-based batteries supposedly do.
[Source: Green Car Congress]