Electrolyte solvation chemistry to construct an anion-tuned interphase for stable high-temperature lithium metal batteries
Lithium metal batteries are regarded as promising alternative next-generation energy storage systems. However, the unstable anode interphase results in dendrite growth and irreversible lithium consumption with low Coulombic efficiency (CE). Herein, we rationally design a Li+ coordination structure v...
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KeAi Communications Co. Ltd.
2023-08-01
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| Series: | eScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667141723000605 |
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| author | Jiahang Chen Yang Zhang Huichao Lu Juan Ding Xingchao Wang Yudai Huang Huiyang Ma Jiulin Wang |
| author_facet | Jiahang Chen Yang Zhang Huichao Lu Juan Ding Xingchao Wang Yudai Huang Huiyang Ma Jiulin Wang |
| author_sort | Jiahang Chen |
| collection | DOAJ |
| description | Lithium metal batteries are regarded as promising alternative next-generation energy storage systems. However, the unstable anode interphase results in dendrite growth and irreversible lithium consumption with low Coulombic efficiency (CE). Herein, we rationally design a Li+ coordination structure via electrolyte solvation chemistry. Nitrate anions are aggregated in the solvation sheath, even at low concentration in a solvent with moderate solvation ability, which promotes Li+ desolvation and constructs a nitrate anion-tuned interphase. Meanwhile, a high-donor-number solvent is introduced as an additive to strongly coordinate with Li+, which accelerates the ion-transfer kinetics and rate performance. This not only results in micro-sized lithium deposition and a high CE of 99.5% over 3500 h, but also enables superior anode stability even under 50% depth plating/stripping and with a lean electrolyte of 3 g Ah−1 at 50 °C. A lithium–sulfur battery exhibits a prolonged lifespan of 2000 cycles with an average CE of 100%. A full battery using 1x excess lithium exhibits a high capacity near 1600 mAh gS−1 for 100 cycles without capacity loss. Moreover, a 0.55 Ah pouch cell delivers a reversible energy density of 423 Wh kg−1 based on these electrodes and electrolyte. |
| first_indexed | 2024-03-12T15:01:08Z |
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| id | doaj.art-153850d3f9ee4f7d969ba77faf6ba37c |
| institution | Directory Open Access Journal |
| issn | 2667-1417 |
| language | English |
| last_indexed | 2024-03-12T15:01:08Z |
| publishDate | 2023-08-01 |
| publisher | KeAi Communications Co. Ltd. |
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| spelling | doaj.art-153850d3f9ee4f7d969ba77faf6ba37c2023-08-14T04:07:55ZengKeAi Communications Co. Ltd.eScience2667-14172023-08-0134100135Electrolyte solvation chemistry to construct an anion-tuned interphase for stable high-temperature lithium metal batteriesJiahang Chen0Yang Zhang1Huichao Lu2Juan Ding3Xingchao Wang4Yudai Huang5Huiyang Ma6Jiulin Wang7Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR ChinaDepartment of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR ChinaDepartment of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR ChinaState Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR ChinaState Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR ChinaState Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR ChinaCollege of Chemistry, Zhengzhou University, Henan, 450001, PR ChinaState Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, PR China; Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China; Corresponding author.Lithium metal batteries are regarded as promising alternative next-generation energy storage systems. However, the unstable anode interphase results in dendrite growth and irreversible lithium consumption with low Coulombic efficiency (CE). Herein, we rationally design a Li+ coordination structure via electrolyte solvation chemistry. Nitrate anions are aggregated in the solvation sheath, even at low concentration in a solvent with moderate solvation ability, which promotes Li+ desolvation and constructs a nitrate anion-tuned interphase. Meanwhile, a high-donor-number solvent is introduced as an additive to strongly coordinate with Li+, which accelerates the ion-transfer kinetics and rate performance. This not only results in micro-sized lithium deposition and a high CE of 99.5% over 3500 h, but also enables superior anode stability even under 50% depth plating/stripping and with a lean electrolyte of 3 g Ah−1 at 50 °C. A lithium–sulfur battery exhibits a prolonged lifespan of 2000 cycles with an average CE of 100%. A full battery using 1x excess lithium exhibits a high capacity near 1600 mAh gS−1 for 100 cycles without capacity loss. Moreover, a 0.55 Ah pouch cell delivers a reversible energy density of 423 Wh kg−1 based on these electrodes and electrolyte.http://www.sciencedirect.com/science/article/pii/S2667141723000605Lithium metal anodeSolvation chemistryAnode interphaseCoulombic efficiencyHigh energy density |
| spellingShingle | Jiahang Chen Yang Zhang Huichao Lu Juan Ding Xingchao Wang Yudai Huang Huiyang Ma Jiulin Wang Electrolyte solvation chemistry to construct an anion-tuned interphase for stable high-temperature lithium metal batteries eScience Lithium metal anode Solvation chemistry Anode interphase Coulombic efficiency High energy density |
| title | Electrolyte solvation chemistry to construct an anion-tuned interphase for stable high-temperature lithium metal batteries |
| title_full | Electrolyte solvation chemistry to construct an anion-tuned interphase for stable high-temperature lithium metal batteries |
| title_fullStr | Electrolyte solvation chemistry to construct an anion-tuned interphase for stable high-temperature lithium metal batteries |
| title_full_unstemmed | Electrolyte solvation chemistry to construct an anion-tuned interphase for stable high-temperature lithium metal batteries |
| title_short | Electrolyte solvation chemistry to construct an anion-tuned interphase for stable high-temperature lithium metal batteries |
| title_sort | electrolyte solvation chemistry to construct an anion tuned interphase for stable high temperature lithium metal batteries |
| topic | Lithium metal anode Solvation chemistry Anode interphase Coulombic efficiency High energy density |
| url | http://www.sciencedirect.com/science/article/pii/S2667141723000605 |
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