UNAUDITED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parentheticals)	2 Months Ended
Mar. 31, 2021 shares
Class B Common Stock
Number of shares to be forfeited if overallotment option is not exercised	1,312,500

Number of shares to be forfeited if overallotment option is not exercised.

No definition available.

Name:	dcrc_NumberOfSharesToBeForfeitedIfOverAllotmentOptionIsNotExercised
Namespace Prefix:	dcrc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration