Two birds with one stone: cobalt/silicon species encapsulated in MOF-derived nitrogen-doped carbon as an integrated electrode for next-generation symmetric pseudocapacitors with energy density over 100 W h kg−1

Abstract

The concept of “two birds with one stone” is employed to fabricate a symmetric pseudocapacitor. The Si/Co with optimized content in the MOF-derived N-doped carbon-based electrode can work at an ultra-large potential window of −1.0 to 0.4 V.