TY - JOUR
T1 - New Application of Waste Citrus Maxima Peel-Derived Carbon as an Oxygen Electrode Material for Lithium Oxygen Batteries
AU - Li, Danrong
AU - Wang, Qingzhen
AU - Yao, Ying
AU - Wu, Feng
AU - Yu, Yajuan
AU - Zhang, Cunzhong
N1 - Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/9/26
Y1 - 2018/9/26
N2 - Recently, lithium oxygen battery has become a promising candidate to satisfy the current large-energy-storage devices demand because of its amazing theoretical energy density. However, it still faces problems such as poor reversibility and short cycle life. Here, citrus maxima peel (CMP) was used as a precursor to prepare activated and Fe-loading carbon (CMPACs and CMPACs-Fe, respectively) via pyrolysis in nitrogen atmosphere at 900 °C, in which KOH was added as an activator. Electrochemical measurements show that CMPAC-based Li-O2 battery possesses high specific capacity of 7800 mA h/g, steady cycling performance of 466 cycles with a corresponding Coulombic efficiency of 92.5%, good rate capability, and reversibility. Besides, CMPACs-Fe-based O2 electrode delivers even lower overpotential in both charge and discharge processes. We conclude that these excellent electrochemical performances of CMPACs and CMPACs-Fe-based O2 electrode benefit from their cellular porous structure, plenty of active sites, and large specific surface area (900 and 768 m2/g), which suggest that these biomass-derived porous carbons might become promising candidates to achieve efficient lithium oxygen battery.
AB - Recently, lithium oxygen battery has become a promising candidate to satisfy the current large-energy-storage devices demand because of its amazing theoretical energy density. However, it still faces problems such as poor reversibility and short cycle life. Here, citrus maxima peel (CMP) was used as a precursor to prepare activated and Fe-loading carbon (CMPACs and CMPACs-Fe, respectively) via pyrolysis in nitrogen atmosphere at 900 °C, in which KOH was added as an activator. Electrochemical measurements show that CMPAC-based Li-O2 battery possesses high specific capacity of 7800 mA h/g, steady cycling performance of 466 cycles with a corresponding Coulombic efficiency of 92.5%, good rate capability, and reversibility. Besides, CMPACs-Fe-based O2 electrode delivers even lower overpotential in both charge and discharge processes. We conclude that these excellent electrochemical performances of CMPACs and CMPACs-Fe-based O2 electrode benefit from their cellular porous structure, plenty of active sites, and large specific surface area (900 and 768 m2/g), which suggest that these biomass-derived porous carbons might become promising candidates to achieve efficient lithium oxygen battery.
KW - Fe loading
KW - Li-O batteries
KW - biomass-derived porous carbon
KW - catalyst
KW - oxygen electrodes
UR - http://www.scopus.com/inward/record.url?scp=85053620931&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b07212
DO - 10.1021/acsami.8b07212
M3 - Article
C2 - 30141898
AN - SCOPUS:85053620931
SN - 1944-8244
VL - 10
SP - 32058
EP - 32066
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 38
ER -