Rapid synthesis of FeS nanoparticles encapsulated with nanoporous graphitic shells for high performance sodium- and lithium-ion batteries

Abstract

The FeS nanoparticles encapsulated with highly nanoporous graphitic shells were prepared from S-template-approach. The template was in situ doped in the graphitic shells during fabricating FeS@C core-shell nanoparticles from short-time...

Iron-catalyzed graphitization for the synthesis of nanostructured graphitic carbons

“…For example, there have been reports of graphitic structures forming around iron sulfide nanoparticles. 231 A final point that is worth noting is that different nitrogen-containing precursors can lead to different types of nitrogen feature in the resulting graphitic carbon, which suggests that the precursor can affect the mechanism of graphitization. 232…”

A facile precursor route towards the synthesis of Fe1−xS@NC-rGO composite anode materials for high-performance lithium-ion batteries

“…Besides, compared with previously reported iron sulfide-based materials, the electrochemical performance of the Fe 1− x S@NC-rGO-2 composite is still remarkable, as shown in Fig. 5 and Table S2 † 10,13–15,19,21–23,34–51 . Besides, the morphology of the Fe 1− x S@NC-rGO-2 electrode after 1700 cycles at 1 A g −1 has also been investigated using scanning electron microscopy.…”

“…5 and Table S2. † 10,[13][14][15]19,[21][22][23][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] Besides, the morphology of the Fe 1−x S@NC-rGO-2 electrode after 1700 cycles at 1 A g −1 has also been investigated using scanning electron microscopy. As shown in Fig.…”

Layer-by-layer anodes with an orientation-arranged structure induced by magnetic field for high-performance lithium ion batteries

“…15,16 In recent years, many studies have investigated methods to overcome the above defects: one strategy is loading these active materials on a conductive framework (such as graphene, porous carbon, amorphous carbon) to enhance the transfer of electrodes; [17][18][19][20][21] the preparation of an active materials@shell structure is another strategy to buffer the excessive volume effect as the strong skeleton of shells limits the volume change of active materials in charge/ discharge processes. 8,[22][23][24][25][26][27] Additionally, modifying the structure of electrodes is also an efficient strategy to conquer the above challenges. [28][29][30][31][32] Fe 3 O 4 /Cu nanorod anodes were fabricated by a two-step approach: Cu nanorods were grown using a electrochemically assisted template method and then Fe 3 O 4 nanoparticles were electrodeposited.…”