期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 209, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2021.108787
关键词
Carbon fiber; Zn?MnO2; Structural composite battery; Energy storage; Multifunctional material
资金
- ARC (Australian Research Council) Industry Transformation Research Hub [IH180100020]
The paper introduces a novel carbon fiber reinforced Zn-MnO2 structural composite battery with excellent tensile strength and high specific capacity, which can be easily manufactured and retains 88.3% capacity after 100 cycles.
Structural composite batteries, which can simultaneously carry mechanical loads and store electric energy, have the potential to significantly reduce the system weight of electric-powered systems including electric cars, unmanned air systems, and mobile robots. Recent research in this area has primarily focused on carbon-fiber based lithium-ion batteries, which require stringent protection against factors such as toxicity, moisture, and overheating, making it particularly challenging to realize the potential of structural batteries. Herein, we propose a novel carbon fiber reinforced Zn?MnO2 structural composite battery featuring a MnO2 cathode and a zinc ion anode; carbon fibers conduct current and provide stiffness and strength. The resulting structural Zn?MnO2 composite battery, which can be manufactured using a simple vacuum consolidation process, without the need for inert gloveboxes, demonstrates an excellent tensile strength of 293 MPa and a high specific capacity of 145.9 mAh g-1. Moreover, the structural composite battery achieves an excellent energy density of 181.5 Wh kg-1 and retains 88.3% capacity after 100 cycles. The new carbon fiber Zn?MnO2 structural composite battery offers huge potential for next-generation energy-storing structures that are safe, eco-efficient, and provide multifunctional performance.
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