Covalent Carbide Interconnects Enable Robust Interfaces and Thin SEI for Graphite Anode Stability under Extreme Fast Charging
Abstract Carbonaceous and carbon‐coated electrodes are ubiquitous in electrochemical energy storage and conversion technologies due to their electrochemical stability, lightweight nature, and relatively low cost. However, traditional reliance on conductive additives and binders leads to impermanent...
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Wiley
2024-12-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202408277 |
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| author | Yverick Rangom Oleksii Sherepenko Ahad Shafiee Alek Cholewinski Kiran Gundegowda Kalligowdanadoddi Bersu Bastug Azer Parisa Jafarzadeh Boxin Zhao Elliot Biro Holger Kleinke Michael A. Pope |
| author_facet | Yverick Rangom Oleksii Sherepenko Ahad Shafiee Alek Cholewinski Kiran Gundegowda Kalligowdanadoddi Bersu Bastug Azer Parisa Jafarzadeh Boxin Zhao Elliot Biro Holger Kleinke Michael A. Pope |
| author_sort | Yverick Rangom |
| collection | DOAJ |
| description | Abstract Carbonaceous and carbon‐coated electrodes are ubiquitous in electrochemical energy storage and conversion technologies due to their electrochemical stability, lightweight nature, and relatively low cost. However, traditional reliance on conductive additives and binders leads to impermanent electrical pathways. Here, a general approach is presented to fabricate robust electrodes with a progressive failure mechanism by introducing carbide‐based interconnects grown via carbothermal conversion of (5 wt%) titanium hydride nanoparticles. This method concurrently enhances both electrical and mechanical properties within the electrode architecture. The resulting chemical bonding between active materials establishes a novel mechanism to maintain stable electrical pathways during cycling. Employed as Li‐ion battery anodes, these electrodes exhibit improved cyclability, achieving 80% capacity retention after 800 fast‐charge cycles at moderate loading (1 mAh cm−2). High loading cells with areal capacity of 3 mAh cm−2 show significantly improved cycle life over the same number of cycles. This performance improvement is attributed to the absence of significant impedance growth and a thinner solid electrolyte interphase (SEI) layer formed at high current densities (4C) as demonstrated by X‐ray photoelectron spectroscopy and transmission electron microscopy studies. The enhanced conductivity facilitates SEI formation, lowering ionic impedance and mitigating lithium plating, ultimately leading to the reported extended cycle life. |
| format | Article |
| id | doaj-art-db1eb56db58b4d91a57c6968e9da60d6 |
| institution | OA Journals |
| issn | 2198-3844 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-db1eb56db58b4d91a57c6968e9da60d62025-08-20T02:33:42ZengWileyAdvanced Science2198-38442024-12-011146n/an/a10.1002/advs.202408277Covalent Carbide Interconnects Enable Robust Interfaces and Thin SEI for Graphite Anode Stability under Extreme Fast ChargingYverick Rangom0Oleksii Sherepenko1Ahad Shafiee2Alek Cholewinski3Kiran Gundegowda Kalligowdanadoddi4Bersu Bastug Azer5Parisa Jafarzadeh6Boxin Zhao7Elliot Biro8Holger Kleinke9Michael A. Pope10Department of Chemical Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Mechanical and Mechatronics Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Mechanical and Mechatronics Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Chemical Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Chemical Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Mechanical and Mechatronics Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Chemistry University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Chemical Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Mechanical and Mechatronics Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Chemistry University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaDepartment of Chemical Engineering University of Waterloo 200 University Avenue Waterloo N2L3G1 CanadaAbstract Carbonaceous and carbon‐coated electrodes are ubiquitous in electrochemical energy storage and conversion technologies due to their electrochemical stability, lightweight nature, and relatively low cost. However, traditional reliance on conductive additives and binders leads to impermanent electrical pathways. Here, a general approach is presented to fabricate robust electrodes with a progressive failure mechanism by introducing carbide‐based interconnects grown via carbothermal conversion of (5 wt%) titanium hydride nanoparticles. This method concurrently enhances both electrical and mechanical properties within the electrode architecture. The resulting chemical bonding between active materials establishes a novel mechanism to maintain stable electrical pathways during cycling. Employed as Li‐ion battery anodes, these electrodes exhibit improved cyclability, achieving 80% capacity retention after 800 fast‐charge cycles at moderate loading (1 mAh cm−2). High loading cells with areal capacity of 3 mAh cm−2 show significantly improved cycle life over the same number of cycles. This performance improvement is attributed to the absence of significant impedance growth and a thinner solid electrolyte interphase (SEI) layer formed at high current densities (4C) as demonstrated by X‐ray photoelectron spectroscopy and transmission electron microscopy studies. The enhanced conductivity facilitates SEI formation, lowering ionic impedance and mitigating lithium plating, ultimately leading to the reported extended cycle life.https://doi.org/10.1002/advs.202408277carbide interconnectsextended cycle lifeextreme fast charging (XFC)graphiteLi‐ion batteriessolid electrolyte interface (SEI) |
| spellingShingle | Yverick Rangom Oleksii Sherepenko Ahad Shafiee Alek Cholewinski Kiran Gundegowda Kalligowdanadoddi Bersu Bastug Azer Parisa Jafarzadeh Boxin Zhao Elliot Biro Holger Kleinke Michael A. Pope Covalent Carbide Interconnects Enable Robust Interfaces and Thin SEI for Graphite Anode Stability under Extreme Fast Charging Advanced Science carbide interconnects extended cycle life extreme fast charging (XFC) graphite Li‐ion batteries solid electrolyte interface (SEI) |
| title | Covalent Carbide Interconnects Enable Robust Interfaces and Thin SEI for Graphite Anode Stability under Extreme Fast Charging |
| title_full | Covalent Carbide Interconnects Enable Robust Interfaces and Thin SEI for Graphite Anode Stability under Extreme Fast Charging |
| title_fullStr | Covalent Carbide Interconnects Enable Robust Interfaces and Thin SEI for Graphite Anode Stability under Extreme Fast Charging |
| title_full_unstemmed | Covalent Carbide Interconnects Enable Robust Interfaces and Thin SEI for Graphite Anode Stability under Extreme Fast Charging |
| title_short | Covalent Carbide Interconnects Enable Robust Interfaces and Thin SEI for Graphite Anode Stability under Extreme Fast Charging |
| title_sort | covalent carbide interconnects enable robust interfaces and thin sei for graphite anode stability under extreme fast charging |
| topic | carbide interconnects extended cycle life extreme fast charging (XFC) graphite Li‐ion batteries solid electrolyte interface (SEI) |
| url | https://doi.org/10.1002/advs.202408277 |
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