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Chemistry of Materials
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Supporting Information
Bimodal Mesoporous Carbon Nanofibers with High Porosity: Freestanding and Embedded
in Membranes for Lithium-Sulfur Batteries
Guang He‡, Benjamin Mandlmeier†, Jörg Schuster†, Linda F. Nazar*‡ and Thomas Bein*†
Figure S1: STEM-HAADF image of carbon nanofibers (f-BMC-SIL) after removal of macroporous silica
with HF (10 wt%). The FFTs of the highlighted red areas A-C show hexagonally ordered domains within
the individual fibers.
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Page 27 of 28
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Chemistry of Materials
Figure S2: SAXS pattern for the sample f-BMC-AAM indexed in the circular hexagonal (p6mm) unit
cell. The squares show the reflections from the mesophases in the AAM pores while the circles show
reflections from a mesoporous top layer on the membrane. This top layer can be indexed in a 2Dhexagonal unit cell (plane group p6mm) with 01 orientation regarding the membrane normal.
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Chemistry of Materials
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Figure S3: Cycling stability of the two carbon nanofibers (f-BMC-SIL-S50 and f-BMC-AAM-S50)
loaded with 50 wt% sulfur. The f-BMC-SIL-S50 cathode exhibits higher discharge capacities, but similar
cycling performance like the f-BMC-AAM-S50. The discharge capacity drops from initially 1250 mAh/g
to 751 mAh/g (50 cycles) and 648 mAh/g (100 cycles) for the f-BMC-SIL-S50 electrode, which
corresponds to a reduction of ca. 40 and 48 %, respectively. The sample was measured at a rate of 1C.
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