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A Practical Li-Ion Full Cell with a High-Capacity Cathode and Electrochemically Exfoliated Graphene Anode: Superior Electrochemical and Low-Temperature Performance

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journal contribution
posted on 2019-01-04, 00:00 authored by Zhonghui Sun, Zheng Li, Xing-Long Wu, Mingqiang Zou, Dandan Wang, Zhenyi Gu, Jianan Xu, Yingying Fan, Shiyu Gan, Dongxue Han, Li Niu
Lithium-ion batteries (LIBs) are widely adopted power sources for portable digital products and electrical vehicles (EV). However, the high cost associated with raw materials and manufacturing and low-temperature performance are primary concerns for large-scale deployment of LIBs, especially for EV and grid-scale storage applications. Herein, a novel lithium-ion full cell assembled by 3 μm-LiNi0.6Co0.2Mn0.2O2 (LNCM-3) cathode and electrochemically exfoliated graphene (EG) anode was fabricated, generating an energy density of ∼278 Wh kg–1, which is calculated on the basis of the design of commercial 18650 LIBs. Besides, it also exhibits outstanding rate capability, superior low-temperature electrochemical performance and ultralong cycle life (no capacity fading within 300 cycles at temperatures from 25 to −30 °C at 180 mA g–1). The proposed novel full cell configuration will enable the next-generation high performance batteries for EV applications.