Blade with specific edges (aluminium) to peel with less energy (7)
I believe the answer is:
scalpel
'blade' is the definition.
(I have seen 'Surgical blade ' mean 'scalpel' so perhaps 'blade' could also mean 'scalpel')
'specific edges aluminium to peel with less energy' is the wordplay.
'specific edges aluminium' becomes 'scalp' (I can't justify this - if you can you should give a lot more credence to this answer).
'with less' indicates named letters should be taken away.
'energy' becomes 'P.E.' (P.E. is an example).
'peel' with 'pe' removed is 'el'.
'scalp'+'el'='SCALPEL'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for scalpel that I've seen before include "Operator may use this" , "Sharp blade" , "Medical knife" , "Surgeon's tool" , "Dissecting knife" .)