Stock Based Compensation (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stock based compensation expenses	$ 295,356	$ 486,396	$ 721,200	$ 607,622
Research and development [Member]
Stock based compensation expenses	43,605		43,605
General and administrative [Member]
Stock based compensation expenses	$ 251,751	$ 486,396	$ 677,595	$ 607,622