期刊
ADVANCED FUNCTIONAL MATERIALS
卷 27, 期 39, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201703035
关键词
3D porous separators; aluminum; batteries; dual-ion batteries; metal anodes
类别
资金
- National Natural Science Foundation of China [51302238, 51602337, 51402343, 51402344]
- Science and Technology Planning Project of Guangdong Province [2014A010105032, 2014A010106016, 2015A010106008]
- Guangdong Innovative and Entrepreneurial Research Team Program [2013C090]
- Natural Science Foundation of Guangdong Province [2014A030310226, 2014A030310482]
- Shenzhen Science and Technology Planning Project [2014A030310482, JSGG20140417113430618, JCYJ20150630114942259, JSGG20160301155933051, JSGG20160229202951528, JCYJ20160122143847150, KQJSCX20160301145319, JSGG20160301173854530, JSGG20140417113430647]
- 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]
Searching for low-cost and high-capacity electrode materials such as metal anodes is of important significance for the development of new generation rechargeable batteries. However, metal anodes always suffer from severe volume expansion/contraction during a repeated electrochemical alloying/dealloying process. In this study, a novel concept about modifying metal-anodes-based battery construction with a multifunctional electrode (ME) design is provided. The ME consists of a 3D porous separator that is modulated with a patterned aluminum anode, which simultaneously works as a current collector, anode material, and separator in a dual-ion battery (DIB). The 3D porous separator not only enables the ME to possess significantly improved electrolyte uptake and retention capabilities, but also acts as a protecting layer to restrict the surface pulverization of the Al anode. The ME-DIB displays remarkably enhanced cell performances, including excellent cycling stability with 92.4% capacity retention after 1000 cycles at a current density of 2 C, and superior rate performance with 80.7% capacity retention at 10 C.
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