Captured by the high energy density and eco-friendly
properties,
secondary energy-storage systems have attracted a great deal of attention.
For meeting with the demand of advanced systems with both cycling
stability and high capacity, a series of tailoring methods have been
used. Electrode materials, as the main components of a full cell,
play importance roles in capacity contribution. Thus, exploring suitable
materials has been deemed to be vital for the development of energy-storage
systems. Recently, compared to the traditional carbon-based materials,
the considerable electrochemical properties of metal-based samples
have been observed. Alternatively, nickel-based materials displayed
resource abundance, environmental-friendliness, and high theoretical
specific capacity, while the rich exploring activities have been scarily
summarized. In this review, the energy-storage performances of nickel-based
materials, such as NiO, NiSe/NiSe2, NiS/NiS2/Ni3S2, Ni2P, Ni3N, and
Ni(OH)2, are summarized in detail. For some materials with
innovative structures, their merits and characteristics were discussed
elaborately through four points: (1) the controlling of nanostructures,
(2) the complexing of carbon materials, (3) the doping of heteroatoms,
and (4) the designing of heterostructures. Significantly, the challenges
and prospects of nickel-based materials for secondary battery systems
are discussed. This work is expected to offer significant summarization
and prospects about physical–chemical designing for nickel-based
samples.