Hi,
I am not sure what country your located in, but many of the western countries offer grants for startups who have something innovative. You do not have to return the grant in many cases, and they don't take equity, but there are some limitations: for example you can only use the money to pay for services from people in your country and you can't use it to pay your own salary (but each grant differs).
You should search for grants in your own country, or take on a co-founder in a country that offers such grants (if relevant).
You're welcome to let me know which country you're located in and provide a few more details and then I can see if I can help further.
Good luck
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