Edge dislocation surface modification: A new and efficient strategy for realizing outstanding lithium storage performance

Transition metal oxides, Co₃O₄, have attracted considerable interest as promising anode materials for lithium-ion batteries (LIBs) due to their high energy densities. It is necessary, however, to resolve the foremost issue regarding the large volume changes during the charge/discharge process. Herein, a novel strategy - edge dislocation modifying special {011} facets (DM011) towards circumventing the issue - is now engineered. The unique formation mechanism of DM011 is presented via stacking fault inducing and topotactic conversion of precursor Co(OH)₂. The synergistic effect of edge dislocation and facets is observed, providing a favorable buffer zone, realizing unprecedented electrochemical behavior with high specific capacity, excellent cycling stability, and superior high-rate capability (1142mAhg^-1 at 1000mAg^-1 after 200 cycles).