Common stock (Details Narrative) - USD ($)				1 Months Ended					12 Months Ended
	Feb. 08, 2021	Jul. 07, 2020	Apr. 09, 2020	Jul. 31, 2020	Jun. 30, 2020	May 29, 2020	Feb. 29, 2020	Feb. 14, 2020	Dec. 31, 2021	Dec. 31, 2020
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)								$ 0.20
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)								20,833,334
Class of Warrant or Right, Issued During Period (in shares)								20,833,334
Class of Warrant or Right, Issued During Period, Value								$ 794,345
Class of Warrant or Right, Period Exerciseable (Month)								6 months
Issuance of Common Shares and Warrants, Direct Costs of Issuance		$ 2,268,215	$ 582,977			$ 1,908,202	$ 348,220
Stock Issued During Period, Shares, Exercise of Warrants and Pre-funded Warrants (in shares)				24,984,492	12,162,492
Proceeds from Issuance of Common Stock									$ 199,525,000	$ 56,496,283
Stock Issued During Period, Value, New Issues									11,810	$ 0
Common Stocks [Member]
Issuance of Common Shares and Warrants, Direct Costs of Issuance		1,224,218	428,283			1,088,876	238,217		$ (14,280,914)
Stock Issued During Period, Value, New Issues	$ 199,525,000
Additional Paid-in Capital [Member]
Issuance of Common Shares and Warrants, Direct Costs of Issuance		1,043,997	154,694			$ 819,327	110,003
Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)						121,163,333
Proceeds from Issuance of Common Stock			2,942,248
Proceeds from Issuance or Sale of Equity, Total		29,997,500	$ 4,000,000			$ 19,998,783
Stock Issued During Period, Value, New Issues		$ 16,290,941				$ 11,336,422
Offering Price (in dollars per share)			$ 0.12
Shares Issued, Number of Warrants Per Share (in shares)			$ 0.5
Stock and Warrants Issued During Period, Shares, New Issues (in shares)			33,333,334
The Common Shares Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	91,315,790
Proceeds from Issuance of Common Stock	$ 199,525,000
Shares Issued, Price Per Share (in dollars per share)	$ 1.90
Registered Direct Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)								20,833,334
Proceeds from Issuance or Sale of Equity, Total								$ 2,500,000
Stock Issued During Period, Value, New Issues								$ 1,705,655
Shares Issued, Price Per Share (in dollars per share)								$ 0.12
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues (in shares)	13,697,368
Public Offering with One Common Share and One Series C Warrant [Member]
Offering Price (in dollars per share)						$ 0.15
Series D Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.1599
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		187,500,000
Class of Warrant or Right, Issued During Period (in shares)		25,000,000
Proceeds from Issuance of Warrants		$ 11,376,575
Stock Issued During Period, Shares, New Issues (in shares)		162,500,000
Placement Agent Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 0.15					$ 0.15
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			1,666,667					1,041,667
Class of Warrant or Right, Issued During Period (in shares)			1,666,667					1,041,667
Adjustments to Equity, Warrant Issued			$ 161,714				12,162,492
Placement Agent Warrants [Member] | Common Stocks [Member]
Adjustments to Equity, Warrant Issued			118,951				35,816
Placement Agent Warrants [Member] | Additional Paid-in Capital [Member]
Adjustments to Equity, Warrant Issued			$ 42,763				$ 16,680
Series B Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 0.15
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			16,666,667
Class of Warrant or Right, Issued During Period (in shares)			16,666,667
Proceeds from Issuance of Warrants			$ 1,057,752
Series C Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)						$ 0.15
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)						133,333,333
Class of Warrant or Right, Issued During Period (in shares)						133,333,333
Proceeds from Issuance of Warrants						$ 7,582,072
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)						1
Pre-funded Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.0001				$ 0.0001
Class of Warrant or Right, Issued During Period (in shares)						12,170,000
Proceeds from Issuance of Warrants		$ 2,329,983				$ 1,080,289
Public Offering with One Pre-funded Warrant and One Series C Warrant [Member]
Offering Price (in dollars per share)						$ 0.1499