High entropy spinel oxide nanoparticles for superior lithiation–delithiation performance

Abstract

High entropy spinel oxide (HESO) nanoparticles were synthesized via a surfactant-assisted hydrothermal method and used as a novel anode material in a lithium-ion battery.

Porous spinel-type (Al0.2CoCrFeMnNi)0.58O4-δ high-entropy oxide as a novel high-performance anode material for lithium-ion batteries

“…Afterward, a huge irreversible peak at low potential 0.21 V emerges, relating to the decomposition of electrolyte, followed by the formation of solid electrolyte interphase (SEI) films on the anode surface [14]. In the subsequent anodic process, a broad overlapped anodic peak centered at about 1.54 V can be attributed to the reversible oxidation of the reduced species produced during the lithiation process, while the other overlapped peak around 2.17 V are related to re-oxidation of some initial oxidized species [46,47]. After the first cycle, the main cathodic peaks are shifted to about 0.59 V and 1.31 V, and the anodic peaks keep unchanged.…”

Sustainable high‐entropy ceramics for reversible energy storage: A short review

“…As pointed out by the STEM–EDX analysis of high‐entropy spinel shown in Figure 2A, the elements are distributed homogeneously without any apparent segregation 34 . Analogously, Figure 2B shows the X‐ray diffraction (XRD) patterns of HEC Mg 0.2 Co 0.2 Ni 0.2 Cu 0.2 Zn 0.2 O pellet and HEC nanoparticles, respectively 26 .…”

“…(A) The uniform elemental distribution for (CoCrFeMnNi)O evidenced using STEM–EDX, scale bar 100 nm 34 . (B) The X‐ray diffraction patterns of high‐entropy ceramics (HEC) Mg 0.2 Co 0.2 Ni 0.2 Cu 0.2 Zn 0.2 O pellet (red) and nanoparticles (blue) 26 .…”

“…Referring to (Mg 0.2 Ti 0.2 Zn 0.2 Cu 0.2 Fe 0.2 ) 3 O 4 HEC anode with a spinel structure, 34 it was also proposed that it can buffer the volume change during de/lithiation process improving the Coulomb efficiency. In Figure 5B a detailed conversion‐based charge of Mg 0.2 Co 0.2 Ni 0.2 Cu 0.2 Zn 0.2 O is proposed 10 .…”

Porous graphene nanocages with wrinkled surfaces enhancing electrocatalytic activity of lithium/sulfuryl chloride batteries

“…19 Moreover, most of these electrode materials have other issues, such as complex synthesis procedures, being environmentally hazardous, high cost, and poor electrical conductivity and large volume-change during the lithiation/delithiation process, which result in a deteriorated rate capability and fast capacity decay, and impede their scale-up deployment. [20][21][22][23][24] Therefore, a compatible strategy needs to be taken into effect to develop nanostructured composites with small diffusion distance in a solid phase, and improve the performance of Li/SO 2 Cl 2 batteries with superior rate capability and specic capacity along with a fast charge-discharge capability.…”