期刊
ADVANCED ENERGY MATERIALS
卷 9, 期 9, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201802753
关键词
fiber supercapacitors; high operating voltage; high volumetric energy density; ionic liquid incorporated electrolytes
类别
资金
- CAS-Queensland Collaborative Science Fund [121E32KYSB20160032]
- National Natural Science Foundation of China [21403287, 21433013, 51402345, 21773291, U1832218, 11874036]
- National Key R&D Program of China [2016YFB0100100]
- CAS-DOE Joint Research Program [121E32KYSB20150004]
- Shenzhen Projects for Basic Research [JCYJ20170412171430026]
Fiber supercapacitors (FSCs) represent a promising class of energy storage devices that can complement or even replace microbatteries in miniaturized portable and wearable electronics. One of their main limitations, however, is the low volumetric energy density when compared with those of rechargeable batteries. Considering the energy density of FSC is proportional to CV2 (E = 1/2 CV2, where C is the capacitance and V is the operating voltage), one would explore high operating voltage as an effective strategy to promote the volumetric energy density. In the present work, an all-solid-state asymmetric FSC (AFSC) with a maximum operating voltage of 3.5 V is successfully achieved, by employing an ionic liquid (IL) incorporated gel-polymer as the electrolyte (EM I MTFSI/PVDF-H FP). The optimized AFSC is based on MnOx@TiN nanowires@carbon nanotube (NWs@CNT) fiber as the positive electrode and C@TiN NWs@CNT fiber as the negative electrode, which gives rise to an ultrahigh stack volumetric energy density of 61.2 mW h cm(-3), being even comparable to those of commercially planar lead-acid batteries (50-90 mW h cm(-3)), and an excellent flexibility of 92.7% retention after 1000 blending cycles at 90 degrees. The demonstration of employing the ILs-based electrolyte opens up new opportunities to fabricate high-performance flexible AFSC for future portable and wearable electronic devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据