As one of the major
problems facing lithium ion batteries, sluggish
charge transfer often induces undesirable large resistance, overpotential,
and round trip inefficiency of batteries during recharge. The need
to improve charge transport kinetics is motivating research into directions
that would rely on high quality heterostructure designs, since it
is reported that the synergistic effects and as-formed inbuilt electric
fields of heterostructures could facilitate charge transport across
the heterostructure, as well as enforce interactions between the active
phases. Heteromanipulation holds great promise for realizing efficient
interconnects between charge transport kinetics and heterostructure
designs. However, most previous studies delineate ensemble measurements
of a given static heteroelectrode, which do not permit isolating and
dissecting the effects of heterostructural manipulation on electrochemical
performances individually. Here, by choosing conversion type electrodes
as an example and comparing series samples which were collected in
the evolution of heterostructures, the effects of heterostructure
manipulation toward modifying overpotential and lithium storage capability
have been systematically investigated. The results demonstrate that
structural features (e.g., robust skeleton, smaller grain sizes, and
high quality hybridity) play an important role in engendering faster
charge transfer and narrowing overpotential than that at the level
of micrometer scales.