nLab skew-commutative algebra

A skew-commutative algebra is a graded algebra $A$ (with the product often written as $\wedge$) such that

• $x \wedge y = (-1)^{pq}\, y \wedge x$ whenever $x$ is in grade $p$ and $y$ is in grade $q$.

Actually, there is a twisted tensor product on the category $Gr Mod$ of graded modules such that a skew-commutative algebra is really a commutative algebra (that is an abelian monoid object) in $Gr Mod$, but I forget how that goes.