The Electrochemical Performances of n-Type Extended Lattice Spaced Si Negative Electrodes for Lithium-Ion Batteries
The electrochemical performances of lithium-ion batteries with different lattice-spacing Si negative electrodes were investigated. To achieve a homogeneous distribution of impurities in the Si anodes, single crystalline Si wafers with As-dopant were ball-milled to form irregular and agglomerated mic...
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| Language: | English |
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Frontiers Media S.A.
2019-05-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fchem.2019.00389/full |
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| author | Moonsang Lee Dockyoung Yoon Dockyoung Yoon Uk Jae Lee Nurzhan Umirov Aliya Mukanova Zhumabay Bakenov Sung-Soo Kim |
| author_facet | Moonsang Lee Dockyoung Yoon Dockyoung Yoon Uk Jae Lee Nurzhan Umirov Aliya Mukanova Zhumabay Bakenov Sung-Soo Kim |
| author_sort | Moonsang Lee |
| collection | DOAJ |
| description | The electrochemical performances of lithium-ion batteries with different lattice-spacing Si negative electrodes were investigated. To achieve a homogeneous distribution of impurities in the Si anodes, single crystalline Si wafers with As-dopant were ball-milled to form irregular and agglomerated micro-flakes with an average size of ~10 μm. The structural analysis proved that the As-doped Si negative materials retain the increased lattice constant, thus, keep the existence of the residual tensile stress of around 1.7 GPa compared with undoped Si anode. Electrochemical characterization showed that the As-doped Si anodes have lower discharge capacity, but Coulombic efficiency and capacity retention were improved in contrast with those of the undoped one. This improvement of electrochemical characteristics was attributed to the increased potential barrier on the side of Si anodes, inherited from the electronic and mechanical nature of Si materials doped with As. We believe that this study will guide us the way to optimize the electrochemical performances of LIBs with Si-based anodes. |
| first_indexed | 2024-12-13T09:40:19Z |
| format | Article |
| id | doaj.art-301b3c3bc7694ba19b305b46a2eb4280 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-13T09:40:19Z |
| publishDate | 2019-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-301b3c3bc7694ba19b305b46a2eb42802022-12-21T23:52:13ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462019-05-01710.3389/fchem.2019.00389454985The Electrochemical Performances of n-Type Extended Lattice Spaced Si Negative Electrodes for Lithium-Ion BatteriesMoonsang Lee0Dockyoung Yoon1Dockyoung Yoon2Uk Jae Lee3Nurzhan Umirov4Aliya Mukanova5Zhumabay Bakenov6Sung-Soo Kim7Korea Basic Science Institute, Daejeon, South KoreaSK Innovation, Daejeon, South KoreaGraduate School of Energy Science and Technology, Chungnam National University, Daejeon, South KoreaSchool of Integrative Engineering, Chung-Ang University, Seoul, South KoreaGraduate School of Energy Science and Technology, Chungnam National University, Daejeon, South KoreaNational Laboratory Astana, School of Engineering, Nazarbayev University, Institute of Batteries, Astana, KazakhstanNational Laboratory Astana, School of Engineering, Nazarbayev University, Institute of Batteries, Astana, KazakhstanGraduate School of Energy Science and Technology, Chungnam National University, Daejeon, South KoreaThe electrochemical performances of lithium-ion batteries with different lattice-spacing Si negative electrodes were investigated. To achieve a homogeneous distribution of impurities in the Si anodes, single crystalline Si wafers with As-dopant were ball-milled to form irregular and agglomerated micro-flakes with an average size of ~10 μm. The structural analysis proved that the As-doped Si negative materials retain the increased lattice constant, thus, keep the existence of the residual tensile stress of around 1.7 GPa compared with undoped Si anode. Electrochemical characterization showed that the As-doped Si anodes have lower discharge capacity, but Coulombic efficiency and capacity retention were improved in contrast with those of the undoped one. This improvement of electrochemical characteristics was attributed to the increased potential barrier on the side of Si anodes, inherited from the electronic and mechanical nature of Si materials doped with As. We believe that this study will guide us the way to optimize the electrochemical performances of LIBs with Si-based anodes.https://www.frontiersin.org/article/10.3389/fchem.2019.00389/fulllithium-ion batteriessilicondopantarsenicdischarge capacityretention |
| spellingShingle | Moonsang Lee Dockyoung Yoon Dockyoung Yoon Uk Jae Lee Nurzhan Umirov Aliya Mukanova Zhumabay Bakenov Sung-Soo Kim The Electrochemical Performances of n-Type Extended Lattice Spaced Si Negative Electrodes for Lithium-Ion Batteries Frontiers in Chemistry lithium-ion batteries silicon dopant arsenic discharge capacity retention |
| title | The Electrochemical Performances of n-Type Extended Lattice Spaced Si Negative Electrodes for Lithium-Ion Batteries |
| title_full | The Electrochemical Performances of n-Type Extended Lattice Spaced Si Negative Electrodes for Lithium-Ion Batteries |
| title_fullStr | The Electrochemical Performances of n-Type Extended Lattice Spaced Si Negative Electrodes for Lithium-Ion Batteries |
| title_full_unstemmed | The Electrochemical Performances of n-Type Extended Lattice Spaced Si Negative Electrodes for Lithium-Ion Batteries |
| title_short | The Electrochemical Performances of n-Type Extended Lattice Spaced Si Negative Electrodes for Lithium-Ion Batteries |
| title_sort | electrochemical performances of n type extended lattice spaced si negative electrodes for lithium ion batteries |
| topic | lithium-ion batteries silicon dopant arsenic discharge capacity retention |
| url | https://www.frontiersin.org/article/10.3389/fchem.2019.00389/full |
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