Ultra-small Fe3O4 nanocrystals decorated on 2D graphene nanosheets with excellent cycling stability as anode materials for lithium ion batteries

Design of highly porous Fe3O4@reduced graphene oxide via a facile PMAA-induced assembly

“…More importantly, it is possible to control the dispersion state of PMAA-stabilized Fe 3 O 4 @GO sheets in water by changing the pH, due to the high pH response of PMAA; we emphasize this simple strategy can be employed in the design of high-performance electrode materials for LIB application. Previous studies of developing a desired Fe 3 O 4 @graphene electrode mainly focused on seeking novel synthesis reactions of a Fe 3 O 4 @graphene nanocomposite, [19][20][21][22] controlling the size of Fe 3 O 4 nanoparticles, [23][24][25] and optimizing structural design of the composites mostly by sacricial template methods. 18,26,27 However, self-assembly of Fe 3 O 4 @graphene has received little attention, especially using a pH-responsive polymer as the assembly agent.…”

Electrochemical Performance of Borate‐Doped Nickel Sulfide: Enhancement of the Bifunctional Activity for Total Water Splitting

“…(b) Compositing with a large surface area conducting substrate (e. g. graphene or carbon nanotubes) to increase the catalyst specific surface area and electronic conductivity. [14] For example, reduced graphene oxide can be used to anchor the catalyst and grow the latter into a 2D material with more exposed active sites. [15] (c) Doping with foreign elements or functional groups to modify the electronic structure of the transition metal and consequently its catalytic properties.…”

Fe3O4@polyaniline yolk-shell micro/nanospheres as bifunctional materials for lithium storage and electromagnetic wave absorption

“…Those nanostructures not only offer extra active sites for lithium storage, but also facilitate the rapid and efficient transportation for mass and ion/electron, and accommodate the localized strain generation during continuous cycling. Combining the anodes with conducting mediums, such as carbon nanotube/fiber, graphene, or conducting polymers, is another effective method to improve the battery performance [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. Those nanocomposites can prevent the electrode cracking and improve the electrode kinetics through conductivity enhancement.…”