Browsing by Author "Daali, Amine"

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    A practical phosphorus-based anode material for high-energy lithium-ion batteries
    (Elsevier, 2020-08) Amine, Rachid; Daali, Amine; Zhou, Xinwei; Liu, Xiang; Liu, Yuzi; Ren, Yang; Zhang, Xiaoyi; Zhu, Likun; Al-Hallaj, Said; Chen, Zonghai; Xu, Gui-Liang; Amine, Khalil; Mechanical and Energy Engineering, School of Engineering and Technology
    State-of-the-art lithium-ion batteries cannot satisfy the increasing energy demand worldwide because of the low specific capacity of the graphite anode. Silicon and phosphorus both show much higher specific capacity; however, their practical use is significantly hindered by their large volume changes during charge/discharge. Although significant efforts have been made to improve their cycle life, the initial coulombic efficiencies of the reported Si-based and P-based anodes are still unsatisfactory (<90%). Here, by using a scalable high-energy ball milling approach, we report a practical hierarchical micro/nanostructured P-based anode material for high-energy lithium-ion batteries, which possesses a high initial coulombic efficiency of 91% and high specific capacity of ~2500 mAh g−1 together with long cycle life and fast charging capability. In situ high-energy X-ray diffraction and in situ single-particle charging/discharging were used to understand its superior lithium storage performance. Moreover, proof-of-concept full-cell lithium-ion batteries using such an anode and a LiNi0.6Co0.2Mn0.2O2 cathode were assembled to show their practical use. The findings presented here can serve as a good guideline for the future design of high-performance anode materials for lithium-ion batteries.