期刊
ADVANCED MATERIALS
卷 29, 期 17, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201606805
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类别
资金
- National Natural Science Foundation of China [51302238, 51602337]
- Science and Technology Planning Project of Guangdong Province [2014A010105032, 2014A010106016, 2015A010106008]
- Natural Science Foundation of Guangdong Province [2014A030310226, 2014A030310482]
- Shenzhen Science and Technology Planning Project [JSGG20140417113430618, JSGG20140417113430647, JSKF20150925163525547, JSGG20150602143328010, JCYJ-20150401145529042, JCYJ2015040114942259, JCYJ20160301155933051, JCYJ20160229202951528, JCYJ20160301173854530]
- SIAT Innovation Program for Excellent Young Researchers [2016016]
- China Postdoctoral Science Foundation [2016M602554]
- Guangdong Engineering Technology Research Center Foundation [20151487]
- Shenzhen Engineering Laboratory Foundation [20151837]
- Scientific Equipment Project of Chinese Academy of Sciences [yz201440]
In this work, a bubble-sheet-like hollow interface design on Al foil anode to improve the cycling stability and rate performance of aluminum anode based dual-ion battery is reported, in which, a carbon-coated hollow aluminum anode is used as both anode materials and current collector. This anode structure can guide the alloying position inside the hollow nanospheres, and also confine the alloy sizes within the hollow nanospheres, resulting in significantly restricted volumetric expansion and ultrastable solid electrolyte interface (SEI). As a result, the battery demonstrates an excellent long-term cycling stability within 1500 cycles with approximate to 99% capacity retention at 2 C. Moreover, this cell displays an energy density of 169 Wh kg(-1) even at high power density of 2113 W kg(-1) (10 C, charge and discharge within 6 min), which is much higher than most of conventional lithium ion batteries. The interfacial engineering strategy shown in this work to stabilize SEI layer and control the alloy forming position could be generalized to promote the research development of metal anodes based battery systems.
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