Tailoring carboxyl tubular carbon nanofibers/MnO₂ composites for high‐performance lithium‐ion battery anodes

Abstract

Three kinds of novel carboxyl modification tubular carbon nanofibers (CMTCFs) and MnO 2 composites materials (CMTCFs/MnO 2) are prepared by combining hypercrosslinking, liquid phase oxidation and hydrothermal technology. The complex morphology and crystal phase of MnO 2 in CMTCFs/MnO 2 are effectively regulated by adjusting the hydrothermal reaction time. The δ-MnO 2 nanosheet-wrapped CMTCFs (CMTCFs@MNS) are used as anode and compared with the other two CMTCFs/ MnO 2. Electrochemical analysis shows that CMTCFs@MNS electrode exhibits a large reversible capacity of 1497.1 mAh g −1 after 300 cycles at 1000 mA g −1 and a long cycling reversible capacity of 400.8 mAh g −1 can be maintained after 1000 cycles at 10 000 mA g −1. CMTCFs@MNS manifests an average reversible capacity of 256.32 mAh g −1 at 10 000 mA g −1 after twelve changes in current density. In addition, the structural superiority of CMTCFs@MNS electrode is clarified by characterizing the microscopic morphology and crystal phase of the electrode after electrochemical performance test.

Review—Recent Advances of Carbon-Based Nanocomposites as the Anode Materials for Lithium-Ion Batteries: Synthesis and Performance

“…44 MnO-CNF, 45 Zn 2 SnO 4 -CNT, 46 GeO 2 -CNF, 47 FeCO 3 -CNF. 48 TiO 2 -SnZnO-CNF, 49 MgFe 2 O 4 -CNF, 50 Mn 3 O 4 -CNT, 51,52 FeCO 3 -CNT, 53 NiCo 2 O 4 -CNT, 54 Fe 3 O 4 -CNF, 55 MnO 2 -CNF, 56 MnO 2 -CNT. 57 Further, several publications also reported the combination of 1D carbon nanostructures with a heteroatom (phosphor, nitrogen, and metal oxide phosphides/nitrides), i.e., N-CNF, 58,59 P-CNT.…”

“…4B. Huyan et al 56 reported that phenomena were normal in nanostructured metal oxide and affected by several mechanisms, i.e., reversible growth of gel-like film on the electrode, interface storage mechanism, and structural changes on the electrode during the cycle. Table I summarizes the performance of 1D carbon nanostructures composite as Li-ion battery anode.…”

“…In this research, they varied MWCNT weight percentage to obtain different resulting products. Wu et al, 44 Qin et al, 46 Gao et al, 51 Cao et al, 52 Li et al, 53 and Huyan et al, 56 used the hydrothermal process to synthesize 1D carbon-metal oxide composites (Fe 2 O 3 -CNF, Zn 2 SnO 4 -CNT, Mn 3 O 4 -CNT, FeCO 3 -CNT, MnO 2 -CNF). A variety of metal precursors was used for the production of the respective metal oxides, i.e., Fe(NO 3 ) 3 .9H 2 O, ZnCl 2 + SnCl 4 .5H 2 O, Mn(Ac) 2, and KMnO 4 .…”

A Cellulose-Derived Nanofibrous MnO2-TiO2-Carbon Composite as Anodic Material for Lithium-Ion Batteries

“…Compared with conventional commercialized graphite anodes, transition metal oxides have caused a great deal of interest thanks to their high theoretical capacities and reliable discharging rates [ 6 , 7 , 8 , 9 , 10 , 11 ]. Among the various transition metal oxides, manganese oxide (MnO 2 ) is an attractive electrode candidate for LIBs due to its high storage capacity (1230 mAh g −1 ), rich abundance, and environmental friendliness [ 12 , 13 ]. However, the practical applications of MnO 2 -based anode materials are greatly limited by their poor intrinsic electric conductivity (~10 −7 –10 −8 S cm −1 ) and severe volume expansion and pulverization of MnO 2 matter from repeated charge/discharge cycles [ 14 , 15 ].…”

Exploring the Effect of a MnO2 Coating on the Electrochemical Performance of a Li1.2Mn0.54Ni0.13Co0.13O2 Cathode Material

“…MnO 2 is a well-known electrochemically active oxide that has been widely applied as an active material for the research fields of supercapacitors [39], electrocatalysis [40], and lithium-ion batteries [41]. Recently, the function of MnO 2 has extended to become a surface modification material on cathode materials, such as LiMn 2 O 4 [42], Li 3 V 2 (PO 4 ) 3 [43], and LiMn 0.333 Ni 0.333 Co 0.333 O 2 [44], in order to obtain a better electrochemical performance.…”