Bioinspired PDA@TiO2 modification on high-voltage LiNi0.5Mn1.5O4 toward enhancing electrochemical performance

TiO2 Nanocontainers Coconstructed Using Polymers and Corrosion Inhibitors for Anticorrosion Reinforcement of Waterborne Epoxy Coatings

“…The TEM image of TiO 2 /PANI-MoO 4 2– nanocontainers (Figure b) shows that chemically polymerized PANI exhibits an irregular and rough morphology on the TiO 2 surface, and molybdate, as a carrier, forming a layer for loading the corrosion inhibitor on the TiO 2 spherical surface, and the average diameter of nanocontainers increases to 1000 nm (Figure S1b). As shown Figure c, the surface of TiO 2 /PANI-MoO 4 2– /PDA composites exhibit flocculent morphology, consistent with the literature. , These results confirm that PDA is polymerized and successfully deposited on the outmost layer of TiO 2 with average size of ∼1500 nm (Figure S1c).…”

“…As shown Figure 3c, the surface of TiO 2 /PANI-MoO 4 2− /PDA composites exhibit flocculent morphology, consistent with the literature. 20,26 These results confirm that PDA is polymerized and successfully deposited on the outmost layer of TiO 2 with average size of ∼1500 nm (Figure S1c).…”

“…The fine C 1s XPS spectra of TiO 2 /PANI-MoO 4 2– /PDA nanocontainers (Figure b) exhibit four peaks corresponding to C–C (284.6 eV), C–N (285.3 eV), CN (286.1 eV), and C–O (286.5 eV), respectively, indicating successful deposition of PANI on the TiO 2 surface . The peaks in the O 1s XPS spectra of TiO 2 /PANI-MoO 4 2– /PDA nanocontainers (Figure c) are assigned to O–Ti (531.2 eV), O–Mo (531.7 eV), O–C (533.0 eV), and O–H (534.7 eV), and those in their N 1s XPS spectra (Figure d) are attributed to −CN– (398.5 eV) and −NH– (400.6 eV), which demonstrates the encapsulation of PDA on the nanocontainer surface . Additionally, the high-resolution Ti 2p and Mo 3d XPS spectra of TiO 2 /PANI-MoO 4 2– /PDA nanocontainers exhibit two prominent peaks (Figures e and f) for Ti 2p 3/2 (453.9 eV) and Ti 2p 1/2 (460.0 eV) and Mo 2d 5/2 (228.0 eV) and Mo 2d 3/2 (231.1 eV), corresponding to the TiO 2 and MoO 4 2– chemical states in nanocontainers, respectively. − …”

Effect of Single-Walled Carbon Nanotube Sub-carbon Additives and Graphene Oxide Coating for Enhancing the 5 V LiNi0.5Mn1.5O4 Cathode Material Performance in Lithium-Ion Batteries

“…More importantly, the SWCNTs and the GO coating layer provided more room for electron and ion migration, respectively, in the LNMO cathode, as well as a stable interface and improved high-rate capacity and long-term stability for the battery. Therefore, the electrochemical performance of our modified LNMO cathode based on the surface coating and slurry additives shows more comparable results with the previously reported works, ,,,,− ,− ,,,, where the comparison data can be seen in Table .…”

“…We then performed the GITT experiments at working voltages of 3.5−5.0 V for charge/discharge analysis at a rate of 0.1C, with a charge/ discharge time of 10 min and a rest time of 1 h. more room for electron and ion migration, respectively, in the LNMO cathode, as well as a stable interface and improved high-rate capacity and long-term stability for the battery. Therefore, the electrochemical performance of our modified LNMO cathode based on the surface coating and slurry additives shows more comparable results with the previously reported works, 9,10,23,24,[26][27][28][30][31][32]37,38,60,61 where the comparison data can be seen in Table 1. We used the post-analysis method to evaluate the structural stability of the P-LNMO and GO-coated LNMO cathode materials.…”