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Novel agaric-derived olive-like yolk-shell structured MnO@C composites for superior lithium storage.

Unique hierarchical olive-like yolk-shell structured MnO@C composites were customized via an ingenious and effective biomass strategy. This structure, with internal void spaces, accommodated the volume variations of MnO, and the N-doped porous carbon shells ensured the rapid transport of Li+/electron species. When used as anodes for LIBs, ultrastable rate and cycling performances were obtained.