Encapsulating MnO nanoparticles within foam-like carbon nanosheet matrix for fast and durable lithium storage

Foam-like carbon nanosheets embedded with MnO nanoparticles were designed and constructed through a confined phase transition process, which possesses abundant internal voids, multi-point core-shell contact, and 3D conductive framework, and exhibit superior rate capacity (383 mAh g−1 at 15 A g−1), as well as outstanding cycling performance (1212 mAh g−1 after 1000 cycles at 2 A g−1).317