A Fiber‐Based 3D Lithium Host for Lean Electrolyte Lithium Metal Batteries
Abstract 3D hosts are promising to extend the cycle life of lithium metal anodes but have rarely been implemented with lean electrolytes thus impacting the practical cell energy density. To overcome this challenge, a 3D host that is lightweight and easy to fabricate with optimum pore size that enabl...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-04-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202104829 |
| _version_ | 1811297663660851200 |
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| author | Sicen Yu Zhaohui Wu John Holoubek Haodong Liu Emma Hopkins Yuxuan Xiao Xing Xing Myeong Hwan Lee Ping Liu |
| author_facet | Sicen Yu Zhaohui Wu John Holoubek Haodong Liu Emma Hopkins Yuxuan Xiao Xing Xing Myeong Hwan Lee Ping Liu |
| author_sort | Sicen Yu |
| collection | DOAJ |
| description | Abstract 3D hosts are promising to extend the cycle life of lithium metal anodes but have rarely been implemented with lean electrolytes thus impacting the practical cell energy density. To overcome this challenge, a 3D host that is lightweight and easy to fabricate with optimum pore size that enables full utilization of its pore volume, essential for lean electrolyte operations, is reported. The host is fabricated by casting a VGCF (vapor‐grown carbon fiber)‐based slurry loaded with a sparingly soluble rubidium nitrate salt as an additive. The network of fibers generates uniform pores of ≈3 µm in diameter with a porosity of 80%, while the nitrate additive enhances lithiophilicity. This 3D host delivers an average coulombic efficiency of 99.36% at 1 mA cm−2 and 1 mAh cm−2 for over 860 cycles in half‐cell tests. Full cells containing an anode with 1.35‐fold excess lithium paired with LiNi0.8Mn0.1Co0.1O2 (NMC811) cathodes exhibit capacity retention of 80% over 176 cycles at C/2 under a lean electrolyte condition of 3 g Ah−1. This work provides a facile and scalable method to advance 3D lithium hosts closer to practical lithium‐metal batteries. |
| first_indexed | 2024-04-13T06:07:48Z |
| format | Article |
| id | doaj.art-3d00c4ec209d487d9569bed610a5f8c7 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-13T06:07:48Z |
| publishDate | 2022-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-3d00c4ec209d487d9569bed610a5f8c72022-12-22T02:59:11ZengWileyAdvanced Science2198-38442022-04-01910n/an/a10.1002/advs.202104829A Fiber‐Based 3D Lithium Host for Lean Electrolyte Lithium Metal BatteriesSicen Yu0Zhaohui Wu1John Holoubek2Haodong Liu3Emma Hopkins4Yuxuan Xiao5Xing Xing6Myeong Hwan Lee7Ping Liu8Program of Materials Science University of California San Diego La Jolla CA 92093 USADepartment of NanoEngineering University of California San Diego La Jolla CA 92093 USADepartment of NanoEngineering University of California San Diego La Jolla CA 92093 USADepartment of NanoEngineering University of California San Diego La Jolla CA 92093 USADepartment of NanoEngineering University of California San Diego La Jolla CA 92093 USAProgram of Materials Science University of California San Diego La Jolla CA 92093 USAProgram of Materials Science University of California San Diego La Jolla CA 92093 USADepartment of NanoEngineering University of California San Diego La Jolla CA 92093 USAProgram of Materials Science University of California San Diego La Jolla CA 92093 USAAbstract 3D hosts are promising to extend the cycle life of lithium metal anodes but have rarely been implemented with lean electrolytes thus impacting the practical cell energy density. To overcome this challenge, a 3D host that is lightweight and easy to fabricate with optimum pore size that enables full utilization of its pore volume, essential for lean electrolyte operations, is reported. The host is fabricated by casting a VGCF (vapor‐grown carbon fiber)‐based slurry loaded with a sparingly soluble rubidium nitrate salt as an additive. The network of fibers generates uniform pores of ≈3 µm in diameter with a porosity of 80%, while the nitrate additive enhances lithiophilicity. This 3D host delivers an average coulombic efficiency of 99.36% at 1 mA cm−2 and 1 mAh cm−2 for over 860 cycles in half‐cell tests. Full cells containing an anode with 1.35‐fold excess lithium paired with LiNi0.8Mn0.1Co0.1O2 (NMC811) cathodes exhibit capacity retention of 80% over 176 cycles at C/2 under a lean electrolyte condition of 3 g Ah−1. This work provides a facile and scalable method to advance 3D lithium hosts closer to practical lithium‐metal batteries.https://doi.org/10.1002/advs.2021048293D hosthigh porositylithium metal anodeRbNO3vapor‐grown carbon fiber |
| spellingShingle | Sicen Yu Zhaohui Wu John Holoubek Haodong Liu Emma Hopkins Yuxuan Xiao Xing Xing Myeong Hwan Lee Ping Liu A Fiber‐Based 3D Lithium Host for Lean Electrolyte Lithium Metal Batteries Advanced Science 3D host high porosity lithium metal anode RbNO3 vapor‐grown carbon fiber |
| title | A Fiber‐Based 3D Lithium Host for Lean Electrolyte Lithium Metal Batteries |
| title_full | A Fiber‐Based 3D Lithium Host for Lean Electrolyte Lithium Metal Batteries |
| title_fullStr | A Fiber‐Based 3D Lithium Host for Lean Electrolyte Lithium Metal Batteries |
| title_full_unstemmed | A Fiber‐Based 3D Lithium Host for Lean Electrolyte Lithium Metal Batteries |
| title_short | A Fiber‐Based 3D Lithium Host for Lean Electrolyte Lithium Metal Batteries |
| title_sort | fiber based 3d lithium host for lean electrolyte lithium metal batteries |
| topic | 3D host high porosity lithium metal anode RbNO3 vapor‐grown carbon fiber |
| url | https://doi.org/10.1002/advs.202104829 |
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