Effect of Nitrogen Doping on the Performance of Mesoporous CMK-8 Carbon Anodes for Li-Ion Batteries

G. Calcagno, M. Agostini, S. Xiong, A. Matic, A. E. C. Palmqvist and C. Cavallo
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G. Calcagno: Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
M. Agostini: Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden
S. Xiong: Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden
A. Matic: Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden
A. E. C. Palmqvist: Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
C. Cavallo: Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden

Energies, 2020, vol. 13, issue 19, 1-13

Abstract: Designing carbonaceous materials with heightened attention to the structural properties such as porosity, and to the functionalization of the surface, is a growing topic in the lithium-ion batteries (LIBs) field. Using a mesoporous silica KIT-6 hard template, mesoporous carbons belonging to the OMCs (ordered mesoporous carbons) family, namely 3D cubic CMK-8 and N-CMK-8 were synthesized and thoroughly structurally characterized. XPS analysis confirmed the successful introduction of nitrogen, highlighting the nature of the different nitrogen atoms incorporated in the structure. The work aims at evaluating the electrochemical performance of N-doped ordered mesoporous carbons as an anode in LIBs, underlining the effect of the nitrogen functionalization. The N-CMK-8 electrode reveals higher reversible capacity, better cycling stability, and rate capability, as compared to the CMK-8 electrode. Coupling the 3D channel network with the functional N-doping increased the reversible capacity to ~1000 mAh·g −1 for the N-CMK-8 from ~450 mAh·g −1 for the undoped CMK-8 electrode. A full Li-ion cell was built using N-CMK-8 as an anode, commercial LiFePO 4, a cathode, and LP30 commercial electrolyte, showing stable performance for 100 cycles. The combination of nitrogen functionalization and ordered porosity is promising for the development of high performing functional anodes.

Keywords: ordered mesoporous carbon (OMC); CMK-8; nitrogen doping; functional materials; lithium-ion batteries (LIB) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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