MIL-88A@polyoxometalate microrods as an advanced anode for high-performance lithium ion batteries

Abstract

New MIL-88A@polyoxometalates microrods have been constructed via a simple one-step hydrothermal method, exhibiting the improved lithium storage capacity, rate performance and cycling stability.

Polyoxometalate‐Based Metal‐Organic Framework/Polypyrrole Composites toward Enhanced Supercapacitor Performance

“…In Figure 4d and Figure S9d, the N 1 s XPS of the two composite materials possess three typical peaks at 400.3 eV, 399.2 eV and 398.7 eV, which can be identified as the binding energy of −NH + −, −NH− and −N=, respectively [36] . By observing the Fe 2 p spectrum (Figure 4e), the binding energies of PW 12 @MIL‐101/PPy‐0.15 are 724.1 eV and 712.0 eV, respectively, which shows the characteristics of Fe (III) in the sample [37] . For PW 12 @MIL‐101/PPy‐0.15 and MIL‐101/PPy‐0.15 (Figure 4f and Figure S9e), the high‐resolution XPS spectra of O 1 s corresponding to three peaks (533.2 eV, 531.8 eV and 531.1 eV) are attributed to the oxygen components in the terephthalic acid linkers, the stretching vibrations of Fe−OH/Fe−O−C and Fe−O−Fe, respectively [38] .…”

“…[36] By observing the Fe 2p spectrum (Figure 4e), the binding energies of PW 12 @MIL-101/PPy-0.15 are 724.1 eV and 712.0 eV, respectively, which shows the characteristics of Fe (III) in the sample. [37] For PW 12 @MIL-101/PPy-0.15 and MIL-101/PPy-0.15 (Figure 4f and Figure S9e), the high-resolution XPS spectra of O 1s correspond- ing to three peaks (533.2 eV, 531.8 eV and 531.1 eV) are attributed to the oxygen components in the terephthalic acid linkers, the stretching vibrations of FeÀ OH/FeÀ OÀ C and FeÀ OÀ Fe, respectively. [38] What's more, the binding energy of the WÀ O bonds in Figure 4f is 532.1 eV, indicating that the PW 12 molecule was successfully immobilized in MIL-101.…”

A Low-Cost SiOx/C@Graphite Composite Derived from Oat Husk as an Advanced Anode for High-Performance Lithium-Ion Batteries

“… 52 , 53 After the formation and refinement of the stable SEI, the reactivated anode material can show high capacity and excellent cycling performance even at high current density even for a long time. 54 …”

Boosting the Pseudocapacitive and High Mass‐Loaded Lithium/Sodium Storage through Bonding Polyoxometalate Nanoparticles on MXene Nanosheets

“…As shown in Figure 3g, the capacity retention at both current densities remains high even after 1000 cycles, which is superior to most of the previously reported POM‐based electrodes (Table S1, Supporting Information). [ 10,13,18,49–60 ] Specifically, the hybrid with rationally combined POMs and MXenes offers a decent specific capacity, the longest cyclic stability, and a profound rate performance among these hybrid structures. Figure 3h shows the evolution of the mass capacity and areal capacity with the loading mass of the active materials.…”