Silicon/Biogas-Derived Carbon Nanofibers Composites for Anodes of Lithium-Ion Batteries
The electrochemical performance of novel nano-silicon/biogas-derived carbon nanofibers composites (nSi/BCNFs) as anodes in lithium-ion batteries was investigated, focusing on composition and galvanostatic cycling conditions. The optimization of these variables contributes to reduce the stress associated with silicon lithiation/delithiation by accommodating/controlling the volume changes, thus preventing anode degradation and therefore improving its performance regarding capacity and stability. Specific capacities up to 520 mAh g−1 with coulombic efficiency > 95% and 94% of capacity retention are achieved for nSi/BCNFs anodes at electric current density of 100/200 mA g−1 and low cutoff voltage of 80 mV. Among the BCNFs, those no-graphitized with fishbone microstructure, which have a great number of active sites to interact with nSi particles, are the best carbon matrices. Specifically, a nSi:BCNFs 1:1 weight ratio in the composite is the optimal, since it allows a compromise between a suitable specific capacity, which is higher than that of graphitic materials currently commercialized for LIBs, and an acceptable capacity retention along cycling. Low cutoff voltage in the 80–100 mV range is the most suitable for the cycling of nSi/BCNFs anodes because it avoids formation of the highest lithiated phase (Li15Si4) and therefore the complete silicon lithiation, which leads to electrode damage
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Format: | artículo biblioteca |
Language: | English |
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Multidisciplinary Digital Publishing Institute
2020
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Subjects: | Silicon, Biogas-derived carbon nanofibers, Anodes, Lithium-ion batteries, |
Online Access: | http://hdl.handle.net/10261/215617 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/100011941 |
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dig-incar-es-10261-2156172022-06-22T09:27:54Z Silicon/Biogas-Derived Carbon Nanofibers Composites for Anodes of Lithium-Ion Batteries Cameán Martínez, Ignacio Cuesta Pedrayes, Nuria Ramos Alonso, Alberto García Suárez, Ana Beatriz Ministerio de Economía y Competitividad (España) Ministerio de Ciencia, Innovación y Universidades (España) Agencia Estatal de Investigación (España) Principado de Asturias Silicon Biogas-derived carbon nanofibers Anodes Lithium-ion batteries The electrochemical performance of novel nano-silicon/biogas-derived carbon nanofibers composites (nSi/BCNFs) as anodes in lithium-ion batteries was investigated, focusing on composition and galvanostatic cycling conditions. The optimization of these variables contributes to reduce the stress associated with silicon lithiation/delithiation by accommodating/controlling the volume changes, thus preventing anode degradation and therefore improving its performance regarding capacity and stability. Specific capacities up to 520 mAh g−1 with coulombic efficiency > 95% and 94% of capacity retention are achieved for nSi/BCNFs anodes at electric current density of 100/200 mA g−1 and low cutoff voltage of 80 mV. Among the BCNFs, those no-graphitized with fishbone microstructure, which have a great number of active sites to interact with nSi particles, are the best carbon matrices. Specifically, a nSi:BCNFs 1:1 weight ratio in the composite is the optimal, since it allows a compromise between a suitable specific capacity, which is higher than that of graphitic materials currently commercialized for LIBs, and an acceptable capacity retention along cycling. Low cutoff voltage in the 80–100 mV range is the most suitable for the cycling of nSi/BCNFs anodes because it avoids formation of the highest lithiated phase (Li15Si4) and therefore the complete silicon lithiation, which leads to electrode damage This research was funded by Spanish Ministries of Economy and Competitiveness MINECO (Project ENE2014-52189-C2-2-R) and Science, Innovation and Universities (Project RTI2018-094286-A-100), and Asturian Regional Government (GRUPIN 2018, Ref. IDI/2018/000234). Peer reviewed 2020-06-30T16:25:44Z 2020-06-30T16:25:44Z 2020 2020-06-30T16:25:45Z artículo http://purl.org/coar/resource_type/c_6501 C — Journal of Carbon Research 6(2): 25 (2020) http://hdl.handle.net/10261/215617 10.3390/c6020025 2311-5629 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/100011941 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ENE2014-52189-C2-2-R info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-094286-A-100 RTI2018-094286-A-100/AEI/10.13039/501100011033 https://doi.org/10.3390/c6020025 Sí open Multidisciplinary Digital Publishing Institute |
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Silicon Biogas-derived carbon nanofibers Anodes Lithium-ion batteries Silicon Biogas-derived carbon nanofibers Anodes Lithium-ion batteries |
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Silicon Biogas-derived carbon nanofibers Anodes Lithium-ion batteries Silicon Biogas-derived carbon nanofibers Anodes Lithium-ion batteries Cameán Martínez, Ignacio Cuesta Pedrayes, Nuria Ramos Alonso, Alberto García Suárez, Ana Beatriz Silicon/Biogas-Derived Carbon Nanofibers Composites for Anodes of Lithium-Ion Batteries |
description |
The electrochemical performance of novel nano-silicon/biogas-derived carbon nanofibers composites (nSi/BCNFs) as anodes in lithium-ion batteries was investigated, focusing on composition and galvanostatic cycling conditions. The optimization of these variables contributes to reduce the stress associated with silicon lithiation/delithiation by accommodating/controlling the volume changes, thus preventing anode degradation and therefore improving its performance regarding capacity and stability. Specific capacities up to 520 mAh g−1 with coulombic efficiency > 95% and 94% of capacity retention are achieved for nSi/BCNFs anodes at electric current density of 100/200 mA g−1 and low cutoff voltage of 80 mV. Among the BCNFs, those no-graphitized with fishbone microstructure, which have a great number of active sites to interact with nSi particles, are the best carbon matrices. Specifically, a nSi:BCNFs 1:1 weight ratio in the composite is the optimal, since it allows a compromise between a suitable specific capacity, which is higher than that of graphitic materials currently commercialized for LIBs, and an acceptable capacity retention along cycling. Low cutoff voltage in the 80–100 mV range is the most suitable for the cycling of nSi/BCNFs anodes because it avoids formation of the highest lithiated phase (Li15Si4) and therefore the complete silicon lithiation, which leads to electrode damage |
author2 |
Ministerio de Economía y Competitividad (España) |
author_facet |
Ministerio de Economía y Competitividad (España) Cameán Martínez, Ignacio Cuesta Pedrayes, Nuria Ramos Alonso, Alberto García Suárez, Ana Beatriz |
format |
artículo |
topic_facet |
Silicon Biogas-derived carbon nanofibers Anodes Lithium-ion batteries |
author |
Cameán Martínez, Ignacio Cuesta Pedrayes, Nuria Ramos Alonso, Alberto García Suárez, Ana Beatriz |
author_sort |
Cameán Martínez, Ignacio |
title |
Silicon/Biogas-Derived Carbon Nanofibers Composites for Anodes of Lithium-Ion Batteries |
title_short |
Silicon/Biogas-Derived Carbon Nanofibers Composites for Anodes of Lithium-Ion Batteries |
title_full |
Silicon/Biogas-Derived Carbon Nanofibers Composites for Anodes of Lithium-Ion Batteries |
title_fullStr |
Silicon/Biogas-Derived Carbon Nanofibers Composites for Anodes of Lithium-Ion Batteries |
title_full_unstemmed |
Silicon/Biogas-Derived Carbon Nanofibers Composites for Anodes of Lithium-Ion Batteries |
title_sort |
silicon/biogas-derived carbon nanofibers composites for anodes of lithium-ion batteries |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/215617 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 http://dx.doi.org/10.13039/100011941 |
work_keys_str_mv |
AT cameanmartinezignacio siliconbiogasderivedcarbonnanofiberscompositesforanodesoflithiumionbatteries AT cuestapedrayesnuria siliconbiogasderivedcarbonnanofiberscompositesforanodesoflithiumionbatteries AT ramosalonsoalberto siliconbiogasderivedcarbonnanofiberscompositesforanodesoflithiumionbatteries AT garciasuarezanabeatriz siliconbiogasderivedcarbonnanofiberscompositesforanodesoflithiumionbatteries |
_version_ |
1777669039644999680 |