Phone Charger Without Outlet

Greetings. In the world where the use of a phone is much more present, people are always suffering from having low battery during the middle of the day. I currently have a great idea for an invention that allows the person to charge a phone even without access to an outlet merely through the heat of the body. Currently, I need around $10,000 in order to create this prototype and to start producing this gadget. Please contact me further for more information about this invention. Thank you.