Academic Journal
Low-temperature anode-free potassium metal batteries
| العنوان: | Low-temperature anode-free potassium metal batteries |
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| المؤلفون: | Tang, Mengyao, Dong, Shuai, Wang, Jiawei, Cheng, Liwei, Zhu, Qiaonan, Li, Yanmei, Yang, Xiuyi, Guo, Lin, Wang, Hua |
| المصدر: | Nature Communications ; volume 14, issue 1 ; ISSN 2041-1723 |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2023 |
| الوصف: | In contrast to conventional batteries, anode-free configurations can extend cell-level energy densities closer to the theoretical limit. However, realizing alkali metal plating/stripping on a bare current collector with high reversibility is challenging, especially at low temperature, as an unstable solid-electrolyte interphase and uncontrolled dendrite growth occur more easily. Here, a low-temperature anode-free potassium (K) metal non-aqueous battery is reported. By introducing Si-O-based additives, namely polydimethylsiloxane, in a weak-solvation low-concentration electrolyte of 0.4 M potassium hexafluorophosphate in 1,2-dimethoxyethane, the in situ formed potassiophilic interface enables uniform K deposition, and offers K||Cu cells with an average K plating/stripping Coulombic efficiency of 99.80% at −40 °C. Consequently, anode-free Cu||prepotassiated 3,4,9,10-perylene-tetracarboxylicacid-dianhydride full batteries achieve stable cycling with a high specific energy of 152 Wh kg −1 based on the total mass of the negative and positive electrodes at 0.2 C (26 mA g −1 ) charge/discharge and −40 °C. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1038/s41467-023-41778-6 |
| الاتاحة: | http://dx.doi.org/10.1038/s41467-023-41778-6 https://www.nature.com/articles/s41467-023-41778-6.pdf https://www.nature.com/articles/s41467-023-41778-6 |
| Rights: | https://creativecommons.org/licenses/by/4.0 ; https://creativecommons.org/licenses/by/4.0 |
| رقم الانضمام: | edsbas.79188543 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41467-023-41778-6 |
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