TY - JOUR
T1 - Reduced graphene oxide and carbon nanotube anchored NASICON-type NaTi2(PO4)3 nanocomposite anodes for high-rate performance sodium-ion batteries
AU - Mukherjee, Anwesa
AU - Akhtar, Mainul
AU - Chang, Jeng Kuei
AU - Banerjee, Susanta
AU - Majumder, Subhasish Basu
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/7/15
Y1 - 2023/7/15
N2 - NASICON-structured NaTi2(PO4)3 (NTP) anode consist of an open 3D framework is received as a zero-stress anode for Na-ion batteries. Herein, we have reported a novel NTP/GO/CNT nanocomposite anodes, in which NTP particles are engineered with reduce graphene oxide (rGO) and carbon nano tube (CNT) and wrapped using a low-cost facile sol-gel method. NTP-rGO10-CNT10 has been chosen as the optimum electrode after studying the effects of rGO/CNT ratio on the electrochemical performance of NTP. The combine effect of structural integrity, high electronic conductivity and high ionic diffusivity in NTP-rGO10-CNT10 leads to excellent electrochemical performance with regards to specific capacity (124 mA h g−1 at 100 mA g−1), remarkable high-rate cycleability (62.5% capacity retention after 400 cycles at 10 C), and excellent rate capability (87 mA h g−1 at 25C). Using cyclic voltammetry investigation, we have estimated the capacitive and faradaic contributions to the total capacities of the composite electrode at various rate. Besides, carbon incorporated NVOPF obtained by carbo-thermal reduction delivers a specific discharge capacity of 106 mA h g−1 as cathode against sodium. Finally, a Na-ion full-cell with the structure of NTP-rGO10-CNT10│1 M NaClO4 in PC│NVOPF@C has been fabricated. This newly designed full-cell can deliver good electrochemical performance in terms of cycleability and power.
AB - NASICON-structured NaTi2(PO4)3 (NTP) anode consist of an open 3D framework is received as a zero-stress anode for Na-ion batteries. Herein, we have reported a novel NTP/GO/CNT nanocomposite anodes, in which NTP particles are engineered with reduce graphene oxide (rGO) and carbon nano tube (CNT) and wrapped using a low-cost facile sol-gel method. NTP-rGO10-CNT10 has been chosen as the optimum electrode after studying the effects of rGO/CNT ratio on the electrochemical performance of NTP. The combine effect of structural integrity, high electronic conductivity and high ionic diffusivity in NTP-rGO10-CNT10 leads to excellent electrochemical performance with regards to specific capacity (124 mA h g−1 at 100 mA g−1), remarkable high-rate cycleability (62.5% capacity retention after 400 cycles at 10 C), and excellent rate capability (87 mA h g−1 at 25C). Using cyclic voltammetry investigation, we have estimated the capacitive and faradaic contributions to the total capacities of the composite electrode at various rate. Besides, carbon incorporated NVOPF obtained by carbo-thermal reduction delivers a specific discharge capacity of 106 mA h g−1 as cathode against sodium. Finally, a Na-ion full-cell with the structure of NTP-rGO10-CNT10│1 M NaClO4 in PC│NVOPF@C has been fabricated. This newly designed full-cell can deliver good electrochemical performance in terms of cycleability and power.
KW - Carbon nanotube (CNT)
KW - NaTi(PO)
KW - NaVO(PO)F
KW - Reduced graphene oxide (rGO)
KW - Sol-gel method
UR - http://www.scopus.com/inward/record.url?scp=85153681816&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2023.127733
DO - 10.1016/j.matchemphys.2023.127733
M3 - Article
AN - SCOPUS:85153681816
SN - 0254-0584
VL - 303
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
M1 - 127733
ER -