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Fe-based frameworks in situ derived 3D Ni-Co-Fe nanocage TMO anode for LIB batteries
Ist Teil von
Ionics, 2022-12, Vol.28 (12), p.5489-5498
Ort / Verlag
Berlin/Heidelberg: Springer Berlin Heidelberg
Erscheinungsjahr
2022
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The research of transition metal oxides (TMOs) as anodes for next-generation LIBs have been attracting increasing attention. In this paper, the 3D Ni-Co-Fe TMOs with porous hollow nanostructures were synthesized by facile solution precipitation and modified temperature zone calcination method. As anode for LIBs, in comparison to Co
3
O
4
/Fe
3
O
4
, NiO/Co
3
O
4
/Fe
3
O
4
has an outstanding rating and cycling performance with a specific capacity of 1052 mAh g
−1
. The discharge capacity at a current density of 0.5 A g
−1
is 512 mAh g
−1
, which is 2.5 times that of Co
3
O
4
/Fe
3
O
4
. After 400 cycles, the NiO/Co
3
O
4
/Fe
3
O
4
electrode still maintain its specific capacity at 560 mAh g
−1
, which is 1.57 times that of the Co
3
O
4
/Fe
3
O
4
. The 3D ternary Ni-Co-Fe TMOs also have high Coulombic efficiency and excellent electrochemical performances, which can be attributed to the synergistic interaction between the ternary Ni-Co-Fe heterostructure and the 3D distinct hollow porous nanocage structures, which have high carrier transportation efficiency and low interface barriers.