Not according to an interview by the creator of Pikachu, Atsuko Nishida:
“Since it was an Electric-type Pokémon, I thought ‘pika‘ [the expression of light flashing in Japanese].
https://web.archive.org/web/20211108083831/https://www.pokemon.com/us/pokemon-news/creator-profile-the-creators-of-pikachu/
Not according to an interview by the creator of Pikachu, Atsuko Nishida:
https://web.archive.org/web/20211108083831/https://www.pokemon.com/us/pokemon-news/creator-profile-the-creators-of-pikachu/