Academic Journal
High power and stable P-doped yolk-shell structured Si@C anode simultaneously enhancing conductivity and Li+ diffusion kinetics
| العنوان: | High power and stable P-doped yolk-shell structured Si@C anode simultaneously enhancing conductivity and Li+ diffusion kinetics |
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| المؤلفون: | Chen, Ming, Zhou, Qinnan, Iqbal, Asma, Tsega, TsegayeTadesse, Dong, Boxu, Liu, Xuejiao, Zhang, Yuchi, Yan, Changyu, Zhao, Liang, Nazakat, Ali, E, Pei San (Sharel), Low, Chee Tong John, Qian, Xuefeng |
| المصدر: | Chen , M , Zhou , Q , Iqbal , A , Tsega , T , Dong , B , Liu , X , Zhang , Y , Yan , C , Zhao , L , Nazakat , A , E , P S S , Low , C T J & Qian , X 2020 , ' High power and stable P-doped yolk-shell structured Si@C anode simultaneously enhancing conductivity and Li+ diffusion kinetics ' , Nano Research , vol. 14 , pp. 1004-1011 . https://doi.org/10.1007/s12274-020-3142-9 |
| سنة النشر: | 2020 |
| الوصف: | Silicon is a low price and high capacity anode material for lithium-ion batteries. The yolk-shell structure can effectively accommodate Si expansion to improve stability. However, the limited rate performance of Si anodes can’t meet people’s growing demand for high power density. Herein, the phosphorus-doped yolk-shell Si@C materials (P-doped Si@C) were prepared through carbon coating on P-doped Si/SiOx matrix to obtain high power and stable devices. Therefore, the as-prepared P-doped Si@C electrodes delivered a rapid increase in Coulombic efficiency from 74.4% to 99.6% after only 6 cycles, high capacity retention of ∼ 95% over 800 cycles at 4 A·g−1, and great rate capability (510 mAh·g−1 at 35 A·g−1). As a result, P-doped Si@C anodes paired with commercial activated carbon and LiFePO4 cathode to assemble lithium-ion capacitor (high power density of ∼ 61,080 W·kg−1 at 20 A·g−1) and lithium-ion full cell (good rate performance with 68.3 mAh·g−1 at 5 C), respectively. This work can provide an effective way to further improve power density and stability for energy storage devices. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| DOI: | 10.1007/s12274-020-3142-9 |
| الاتاحة: | https://research.tees.ac.uk/en/publications/f927fc6a-dcd8-44d5-b2f9-b8749e696340 https://doi.org/10.1007/s12274-020-3142-9 https://research.tees.ac.uk/ws/files/26875754/High_power_and_stable_P_doped_yolk_shell.pdf |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.53E1FDE5 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1007/s12274-020-3142-9 |
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