the.com/electrochemistry

means The branch of chemistry that studies how chemical reactions can generate electricity, and how electricity can drive chemical reactions.

from A straightforward compound of 'electro-' (from Greek 'ēlektron,' meaning amber, the stuff ancient Greeks rubbed to raise a static charge) and 'chemistry' (tracing back through alchemy to Arabic 'al-kīmiyā'). The field itself got its real start when Alessandro Volta and Luigi Galvani argued over frog legs and metal probes in the late 1700s, discovering that chemical reactions could push electrons around in a controllable way — the word simply stitched together the two sciences that had just collided.