Imperial College London

Professor Nigel Brandon OBE FREng

Faculty of Engineering

Dean of the Faculty of Engineering
 
 
 
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Contact

 

+44 (0)20 7594 8600n.brandon Website

 
 
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Location

 

2.06Faculty BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{2018:10.1016/j.ensm.2018.12.012,
doi = {10.1016/j.ensm.2018.12.012},
journal = {Energy Storage Materials},
title = {Sn@C evolution from yolk-shell to core-shell in carbon nanofibers with suppressed degradation of lithium storage},
url = {http://dx.doi.org/10.1016/j.ensm.2018.12.012},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - © 2018 Metallic Sn has high conductivity and high theoretical capacity for lithium storage but it suffers from severe volume change in lithiation/delithiation leading to capacity fade. Yolk-shell and core-shell Sn@C spheres interconnected by carbon nanofibers were synthesized by thermal vapor and thermal melting of electrospun nanofibers to improve the cycling stability. Sn particles in yolk-shell spheres undergo dynamic structure evolution during thermal melting to form core-shell spheres. The core-shell spheres linked along the carbon nanofibers show outstanding performance and are better than the yolk-shell system for lithium storage, with a high capacity retention of 91.8% after 1000 cycles at 1 A g-1. The superior structure of core-shell spheres interconnected by carbon nanofibers has facile electron conductivity and short lithium ion diffusion pathways through the carbon nanofibers and shells, and re-develops Sn@C structures with Sn clusters embedded into carbon matrix during electrochemical cycling, enabling the high performance.
DO - 10.1016/j.ensm.2018.12.012
PY - 2018///
TI - Sn@C evolution from yolk-shell to core-shell in carbon nanofibers with suppressed degradation of lithium storage
T2 - Energy Storage Materials
UR - http://dx.doi.org/10.1016/j.ensm.2018.12.012
UR - http://hdl.handle.net/10044/1/65337
ER -