Choose yttrium component finally in part for battery fluid (11)
I believe the answer is:
electrolyte
'battery fluid' is the definition.
The answer and definition can be both substances as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'choose yttrium component finally in part' is the wordplay.
I cannot quite understand how this works, but
'choose' could be 'elect' (electing is a kind of choosing) and 'elect' is located in the answer.
'yttrium' could be 'y' (chemical symbol) and 'y' is found within the answer.
'part' could be 'te' (te is a kind of part) and 'te' is found within the answer.
This explanation may well be incorrect...
'for' is the link.
Can you help me to learn more?
(Other definitions for electrolyte that I've seen before include "Liquid or gel containing ions - EEC telly rot (anag)" , "Fluid in a battery" , "Liquid or gel in a battery" , "conductor" .)