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(57) Abstract: A wholly aromatic polyamide that undergoes less deterioration even when a high voltage is applied, a wholly aromatic polyamide porous film using the same, and a non-aqueous electrolyte containing the wholly aromatic polyamide porous film Provided are a secondary battery separator and a non-aqueous electrolyte secondary battery including the separator. [1] A HOMO value of a wholly aromatic polyamide obtained by molecular orbital method calculation for all nitrogen atoms of a molecular model of the wholly aromatic polyamide is -8.5. A wholly aromatic polyamide having an eV or less. [2] A wholly aromatic polyamide porous film comprising the wholly aromatic polyamide of the above [1]. [3] A non-aqueous electrolyte secondary battery separator comprising the wholly aromatic polyamide porous film of [2]. [4] A non-aqueous electrolyte secondary battery including the non-aqueous electrolyte battery separator of [3]. |