期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 23, 页码 11764-11771出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta00482f
关键词
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资金
- Research Grants Council (RGC) of the Hong Kong Administrative Region, China [CUHK14200615]
- Innovation and Technology Commission of the Hong Kong Special Administrative Region, China [ITS/248/14FP]
Developing flexible, high-energy and low-cost rechargeable batteries is critical to fulfil the increasing demands of flexible electronic devices. In this work, we report a high-performance nitrogen-doped carbon-coated LiTi2(PO4)(3) (N-ccLTP) prepared via a one-pot carbonization incorporating sol-gel method. The N-ccLTP anode demonstrates an excellent rate capability with a superior cycle life up to 1000-2000 cycles at high C-rates (5C and 10C). Using the N-ccLTP anode coupled to a LiMn2O4 cathode, we develop high-areal-capacity flexible aqueous lithium-ion batteries (ALIBs). Under a wide range of bending curvatures at continuous and cyclic bending modes, the flexible ALIBs show no degradation from the non-bending state and demonstrated superior stability with a high areal capacity of 1.2-1.4 mA h cm(-2) and a high volumetric energy density of 26-31 mW h cm(-3). The designs of the N-ccLTP anode material and the flexible device structure offer effective strategies to develop high-performance flexible ALIBs for flexible electronic applications.
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