Flexible and stable high-energy lithium-sulfur full batteries with only 100% oversized lithium

被引:232
作者
Chang, Jian [1 ]
Shang, Jian [1 ]
Sun, Yongming [2 ]
Ono, Luis K. [3 ]
Wang, Dongrui [1 ]
Ma, Zhijun [1 ]
Huang, Qiyao [1 ]
Chen, Dongdong [1 ]
Liu, Guoqiang [1 ]
Cui, Yi [2 ,4 ]
Qi, Yabing [3 ]
Zheng, Zijian [1 ]
机构
[1] Hong Kong Polytech Univ, Lab Adv Interfacial Mat & Devices, Inst Text & Clothing, Hong Kong, Hong Kong, Peoples R China
[2] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA
[3] Grad Univ, Okinawa Inst Sci & Technol, Energy Mat & Surface Sci Unit, 1919-1 Tancha, Onna Son, Okinawa 9040495, Japan
[4] Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA
来源
NATURE COMMUNICATIONS | 2018年 / 9卷
关键词
REDUCED GRAPHENE OXIDE; LI-S BATTERIES; RECHARGEABLE BATTERIES; METAL ANODES; COTTON-TEXTILE; PERFORMANCE; ELECTRODE; ION; FABRICATION; PAPER;
D O I
10.1038/s41467-018-06879-7
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Lightweight and flexible energy storage devices are urgently needed to persistently power wearable devices, and lithium-sulfur batteries are promising technologies due to their low mass densities and high theoretical capacities. Here we report a flexible and high-energy lithium-sulfur full battery device with only 100% oversized lithium, enabled by rationally designed copper-coated and nickel-coated carbon fabrics as excellent hosts for lithium and sulfur, respectively. These metallic carbon fabrics endow mechanical flexibility, reduce local current density of the electrodes, and, more importantly, significantly stabilize the electrode materials to reach remarkable Coulombic efficiency of >99.89% for a lithium anode and >99.82% for a sulfur cathode over 400 half-cell charge-discharge cycles. Consequently, the assembled lithium-sulfur full battery provides high areal capacity (3 mA h cm(-2)), high cell energy density (288 W h kg(-1) and 360 W h L-1), excellent cycling stability (260 cycles), and remarkable bending stability at a small radius of curvature (<1 mm).
引用
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页数:11
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