Confinement of ZIF-67-derived N, Co-doped C@Si on a 2D MXene for enhanced lithium storage
A heterostructure composed of ZIF-67-derived nitrogen and cobalt-doped carbon enfolded silicon (C@Si) nanoparticles anchored on 2D MXene layers was constructed for boosting the performance of lithium-ion batteries (LIBs). The heterostructure anode demonstrated a high initial discharge capacity of 30...
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Published in | Dalton transactions : an international journal of inorganic chemistry Vol. 53; no. 27; pp. 11232 - 11236 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
09.07.2024
|
Subjects | |
Online Access | Get full text |
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Summary: | A heterostructure composed of ZIF-67-derived nitrogen and cobalt-doped carbon enfolded silicon (C@Si) nanoparticles anchored on 2D MXene layers was constructed for boosting the performance of lithium-ion batteries (LIBs). The heterostructure anode demonstrated a high initial discharge capacity of 3021 mA h g
−1
at 0.2 A g
−1
, retaining outstanding cycling stability with a reversible capacity of 520 mA h g
−1
at 2000 mA g
−1
, and the coulombic efficiency remained above 97% after 500 cycles. The introduced Ti
3
C
2
nanosheets and the cobalt-doped carbon can not only contribute to the interfacial transfer of Li
+
and electrons but also buffer the volume expansion of Si.
N, Co-doped C@Si on a 2D MXene was constructed for boosting the performance of lithium-ion batteries (LIBs), which demonstrated ultrahigh reversible capacity, outstanding rate capability and excellent cycling performance in lithium-ion batteries. |
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Bibliography: | Electronic supplementary information (ESI) available: Details of materials, methods, synthesis and electrochemical measurement, ICP data, SEM, and IR and XPS spectra. See DOI https://doi.org/10.1039/d4dt01314j ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1477-9226 1477-9234 1477-9234 |
DOI: | 10.1039/d4dt01314j |