Promoting the Li storage performances of Li2ZnTi3O8@Na2WO4 composite anode for Li-ion battery

ZrO2 coated Li1.9K0.1ZnTi3O8 as an anode material for high-performance lithium-ion batteries

“…the contact resistance between the electrolyte and the electrode and between the electrode and the diaphragm; the semicircle represents the charge transfer resistance within the electrode and the diagonal line represents the Warburg impedance caused by the diffusion of Li + in the active material. 17,41 The corresponding equivalent circuit is shown in the inset of Fig. 7, where re represents the contact resistance in the liquid phase, R ct represents the charge transfer resistance, CPE is a constant, and Z w is the Warburg resistance.…”

“…However, the ionic and electronic conductivity of LZTO is relatively poor. To improve the low electrical conductivity of LZTO, the usual modification methods used are surface coating, 17–19 ion doping, 20–25 and structural nanosizing. 26…”

“…However, the ionic and electronic conductivity of LZTO is relatively poor. To improve the low electrical conductivity of LZTO, the usual modication methods used are surface coating, [17][18][19] ion doping, [20][21][22][23][24][25] and structural nanosizing. 26 Zeng et al 22 added Cr(NO 3 ) 3 to Li 2 ZnTi 3 O 8 to achieve Cr 3+ doping by the liquid phase process.…”

Li2ZnTi3O8anode: design from material to electrode and devices

“…Yi's group constructed the Li 2 ZnTi 3 O 8 @Na 2 WO 4 anode. 33 The Na 2 WO 4 coating decreased the polarization and charge transfer resistance and improved the Li + diffusion coefficient, which enhanced the rate capability of Li 2 ZnTi 3 O 8 @Na 2 WO 4 . 243.9, 221.0, 182.9, 160.3, 143.6, and 132.8 mA h g −1 were delivered for Li 2 ZnTi 3 O 8 @Na 2 WO 4 at 0.05, 0.1, 0.3, 0.5, 0.8, and 1 A g −1 , respectively.…”

“…However, it is a common phenomenon that the specific capacity of LZTO abnormally continues to increase during the cycling process. [33][34][35][36][37] The continuous abnormal capacity rising of LZTO upon cycling worsens the cycling stability and may even cause safety problems. The researchers mainly attribute this to the activation of the LZTO electrode, continuous decomposition of the electrolyte, and/or formation of the SEI layer.…”