TY - JOUR
T1 - Defect Emission Energy and Particle Size Effects in Fe:ZnO Nanospheres Used in Li-Ion Batteries as Anode
AU - Sarf, Fatma
AU - Kızıl, Hüseyin
N1 - Publisher Copyright:
© 2021, The Minerals, Metals & Materials Society.
PY - 2021/11
Y1 - 2021/11
N2 - Pure and Fe-doped ZnO (FexZnyV1−x−yO2) nanostructures with varying iron mole percentages of 3%, 4.5%, and 6% were synthesized by co-precipitation without vacuum ambient. Structural, morphological, defect, and electrochemical properties, when serving as an anode in Li-ion batteries, were studied. All the samples have a wurtzite ZnO crystallinity, and a slight shift from the x-ray diffraction patterns of Fe:ZnO samples shows that Fe3+ ions were substituted by Zn2+ ions. As the percentage of the Fe mole increases from 3% to 4.5%, the size of the particles decreases from 12 nm to 9 nm, but increases to 14 nm with 6% Fe doping. Although all the samples have a spherical type, and porous surfaces are exhibited in the 4.5% Fe:ZnO nanospheres. The emission bands originate due to energy levels generated by ZnO intrinsic defects in all the samples with changing emission peaks by Fe doping. The 4.5% Fe:ZnO results substantially enhance the specific capacity of 400 mAh g−1 during 100 cycles.
AB - Pure and Fe-doped ZnO (FexZnyV1−x−yO2) nanostructures with varying iron mole percentages of 3%, 4.5%, and 6% were synthesized by co-precipitation without vacuum ambient. Structural, morphological, defect, and electrochemical properties, when serving as an anode in Li-ion batteries, were studied. All the samples have a wurtzite ZnO crystallinity, and a slight shift from the x-ray diffraction patterns of Fe:ZnO samples shows that Fe3+ ions were substituted by Zn2+ ions. As the percentage of the Fe mole increases from 3% to 4.5%, the size of the particles decreases from 12 nm to 9 nm, but increases to 14 nm with 6% Fe doping. Although all the samples have a spherical type, and porous surfaces are exhibited in the 4.5% Fe:ZnO nanospheres. The emission bands originate due to energy levels generated by ZnO intrinsic defects in all the samples with changing emission peaks by Fe doping. The 4.5% Fe:ZnO results substantially enhance the specific capacity of 400 mAh g−1 during 100 cycles.
KW - co-precipitation
KW - energy storage
KW - Li-ion battery
KW - Metal oxide
UR - http://www.scopus.com/inward/record.url?scp=85114320034&partnerID=8YFLogxK
U2 - 10.1007/s11664-021-09191-1
DO - 10.1007/s11664-021-09191-1
M3 - Article
AN - SCOPUS:85114320034
SN - 0361-5235
VL - 50
SP - 6475
EP - 6481
JO - Journal of Electronic Materials
JF - Journal of Electronic Materials
IS - 11
ER -