期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 35, 页码 31799-31805出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b07711
关键词
gadolinium; Li-ion capacitor; energy density; Prussian blue analogue; cathode
资金
- Korea Institute of Science and Technology Future Resource Program [2E29400]
- Future Material Discovery Program through the National Research Foundation of Korea [2016M3D1A1027666]
- Basic Science Research Program through the National Research Foundation of Korea [2017R1A2B3009135]
- National Research Foundation of Korea [2E29400] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Li-ion storage devices having superior energy density are critical for one-time-charge long-term applications. Currently, much research endeavor is directed at enhancing the energy density of hybrid Li-ion capacitors, which incorporate the high energy of conventional Li-ion batteries with the elevated power density of Li-ion supercapacitors. Herein, we prepare orthorhombic GdCo(CN)(6) as a new Prussian blue analogue (PBA), showing that this compound offers excellent energy/power densities (605 W.h kg(-1) and 174 W kg(-1), respectively) and features Li-ion storage capacities (352 and 258 mA.h g(electrode)(-1) at 100 and 1000 mA g(-1), respectively) that are almost twice higher than those of other cathode materials utilized in hybrid Li-ion capacitors. Thus, this study not only opens a new path for the exploration of new-type PBAs, but also provides insights on the use of lanthanides in energy storage applications.
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