دورية أكاديمية
In Situ Monitoring the Potassium-Ion Storage Enhancement in Iron Selenide with Ether-Based Electrolyte
| العنوان: | In Situ Monitoring the Potassium-Ion Storage Enhancement in Iron Selenide with Ether-Based Electrolyte |
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| المؤلفون: | Xiaodan Li, Jinliang Li, Wenchen Zhuo, Zhibin Li, Liang Ma, Zhong Ji, Likun Pan, Wenjie Mai |
| المصدر: | Nano-Micro Letters, Vol 13, Iss 1, Pp 1-14 (2021) |
| بيانات النشر: | SpringerOpen, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Technology |
| مصطلحات موضوعية: | Iron selenide, Ether-based electrolyte, In situ visualization technique, Potassium-ion batteries, Technology |
| الوصف: | Abstract As one of the promising anode materials, iron selenide has received much attention for potassium-ion batteries (KIBs). Nevertheless, volume expansion and sluggish kinetics of iron selenide result in the poor reversibility and stability during potassiation–depotassiation process. In this work, we develop iron selenide composite matching ether-based electrolyte for KIBs, which presents a reversible specific capacity of 356 mAh g−1 at 200 mA g−1 after 75 cycles. According to the measurement of mechanical properties, it is found that iron selenide composite also exhibits robust and elastic solid electrolyte interphase layer in ether-based electrolyte, contributing to the improvement in reversibility and stability for KIBs. To further investigate the electrochemical enhancement mechanism of ether-based electrolyte in KIBs, we also utilize in situ visualization technique to monitor the potassiation–depotassiation process. For comparison, iron selenide composite matching carbonate-based electrolyte presents vast morphology change during potassiation–depotassiation process. When changing to ether-based electrolyte, a few minor morphology changes can be observed. This phenomenon indicates an occurrence of homogeneous electrochemical reaction in ether-based electrolyte, which results in a stable performance for potassium-ion (K-ion) storage. We believe that our work will provide a new perspective to visually monitor the potassium-ion storage process and guide the improvement in electrode material performance. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2311-6706 2150-5551 |
| العلاقة: | https://doaj.org/toc/2311-6706Test; https://doaj.org/toc/2150-5551Test |
| DOI: | 10.1007/s40820-021-00708-1 |
| الوصول الحر: | https://doaj.org/article/c1719acd9e4c48f495ba3092f27e9757Test |
| رقم الانضمام: | edsdoj.1719acd9e4c48f495ba3092f27e9757 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23116706 21505551 |
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| DOI: | 10.1007/s40820-021-00708-1 |