Insight into the Superior Lithium Storage Properties of Ultrafine CoO Nanoparticles Confined in a 3 D Bimodal Ordered Mesoporous Carbon CMK‐9 Anode

Abstract

Ultrafine CoO particles immobilized into the mesopores of three‐dimensional cubic bimodal ordered mesoporous carbon CMK‐9 is successfully prepared by using a combination of nanocasting and wet‐impregnation methods. It is found that the cubic bimodal interconnected mesoporous framework of CMK‐9 plays a crucial role in achieving the excellent electrochemical performances by assisting the rapid mass and charge transfer. Among the prepared nanocomposites, CoO(10)@CMK‐9 delivers a discharge capacity of 830 mAh g−1 after 200 cycles at a current density of 100 mA g−1 in lithium‐ion batteries. At a higher current density of 1000 mA g−1, the anode presents an outstanding discharge capacity of 636 mAh g−1 after 200 cycles. In sodium‐ion batteries, the anode provides a discharge capacity of 296 mAh g−1 after 250 cycles at a current density of 100 mA g−1. The remarkable performances of CoO(10)@CMK‐9 demonstrate the promising potentials of the nanocomposite as the anode for rechargeable batteries.

New insights into the outstanding performances of nickel‐doped manganese oxide nanoparticles embedded in a 3D carbon nanopipes framework as anode for lithium and sodium‐ion batteries

“…The shakeup satellites were observed at around 861.7 and 879 eV. The deconvoluted O 1s spectra (Figure 5) of Ni(y)‐Mn 3 O 4 (1)@CMK‐5 showed four peaks around 528.9, 530.4, 532.4, and 535.3 eV related to Mn‐O/Ni‐O, Mn‐O‐C, C‐O‐C, and H‐O‐H, sequentially 21,50,51 . The presence of Mn‐O‐C bonding indicates strong interactions between Mn 3 O 4 NPs and the support CMK‐5.…”

Carbon Layer and CoO Nanosheet Dual-Encapsulated SiOx Particles for Ultra-High Specific Capacity Lithium-Ion Batteries

“…Besides, the SiO x @C@CoO composites showed additional peaks at 36.5, 42.4, 61.5, 73.7, and 77.5°, all of which were attributed to the CoO crystal structure (JCPDS No. 43-1004), indicating that the metal oxide CoO was compounded with the SiO x @C particles successfully after the hydrothermal treatment …”

“…In addition, transition metal oxides serve as a promising anode material due to their high theoretical capacity, good safety, environmental friendliness, and abundant reserves. − The transition metal oxides include Fe 2 O 3 , , Fe 3 O 4 , Co 3 O 4 , CoO, , NiO, , MnO, , Mn 3 O 4 . , Among them, CoO has been widely noticed for its convenient preparation and higher theoretical capacity (716 mAh g –1 ). − Saikia et al confined CoO nanoparticles in mesoporous carbon to prepare composites and achieved an excellent lithium storage performance. Shi et al combined CoO with N-doped carbon materials to obtain sandwich-like composites, which achieved 1031.2 mAh g –1 after 500 cycles at 0.5 A g –1 .…”

“…16−18 The transition metal oxides include Fe 2 O 3 , 19,20 Fe 3 O 4 , 21 Co 3 O 4 , 22 CoO, 23,24 NiO, 25,26 MnO, 27,28 preparation and higher theoretical capacity (716 mAh g −1 ). 31−33 Saikia et al 34 confined CoO nanoparticles in mesoporous carbon to prepare composites and achieved an excellent lithium storage performance. Shi et al 35 combined CoO with N-doped carbon materials to obtain sandwich-like composites, which achieved 1031.2 mAh g −1 after 500 cycles at 0.5 A g −1 .…”

Deep Denitrogenation of Model Diesel Fuel Using Ni‐doped Mesoporous Carbon: Synthesis Route and Adsorption Study

“…The CMK‐type materials (stands for Carbon Mesostructured by KAIS), such as CMK‐1, CMK‐3, and CMK‐4 are a member of the ordered mesoporous carbons (OMCs) category which have been prepared by carbonization of template route using ordered mesoporous silica (e. g., MCM‐48, SBA‐15, and KIT‐6) and carbon precursors (e. g., sucrose and furfuryl alcohol) [43–45] . Because of the carbonaceous structural features, large specific surface area, pore volume, regular pore structure, and tunable porosity, they have been utilized as adsorbents and catalysts, such as electrocatalysts and supported metal catalysts [46–50] .…”