Figure 20.

(a) High-rate capacity and cycle stability of anode made from NiO/Co₃O₄ nanotubes encapsulated with reduced graphene oxide wall [193]. Copyright 2020, American Chemical Society. (b) The unique coral-like CoTiO₃/Co₃O₄/TiO₂ hybrid nanobelts structures anode benefits the lithium ions transformation and provides excellent support for the specific capacity [194]. Copyright 2019, Wiley. (c) TiNb₂₄O₆₂ porous nanowires have lots of oxygen vacancies providing more pseudo-capacity behavior activity for the anode [198]. Copyright 2021, Elsevier.