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- W4385718299 abstract "Abstract Lithium ion capacitors have high energy density and power density, among of which lithium manganate is low cost of intrinsic value, simultaneously the recovery technology of manganese is relatively mature. Therefore, it has special advantages in terms of economy. This paper applies for LiMn 2 O 4 as the cathode electrode and AC as the anode electrode to explore the influence of the mass ratio of cathode and anode electrodes on the electrochemical performance of LiMn 2 O 4 //AC lithium ion capacitors. The results show that when the mass ratio of cathode and anode electrodes is 1:1, the specific capacity of the lithium ion capacitor can reach maximized, up to 24.33 mAh g -1 . Meanwhile, the cathode electrode potential is below 4.3V, the anode electrode potential is above 1.6V as well as the rate performance and self-discharge performance are the best. At a voltage range of 0.3-2.5V, the energy density can reach 35.5 Wh/kg at a power density 34.9 W/kg. When the mass ratio of the cathode and anode electrodes is less than 1:1, the cathode electrode is insufficient. The capacity is basically not attenuated after 500 cycles, but the electrochemical impedance is large and the polarization is rather obvious. The XRD diffraction peak is weakened and the surface morphology of the electrode is blurred with cracking material particles. The study suggests that the capacity ratio of cathode and anode has a crucial effect on the electrical performance of lithium ion capacitors." @default.
- W4385718299 created "2023-08-11" @default.
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- W4385718299 date "2023-08-04" @default.
- W4385718299 modified "2023-09-27" @default.
- W4385718299 title "Study on different mass ratio of the cathode and anode electrode of LiMn2O4//AC lithium ion capacitor" @default.
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- W4385718299 doi "https://doi.org/10.21203/rs.3.rs-3206703/v1" @default.
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