Improving the Cycling Stability of Fe3O4/NiO Anode for Lithium Ion Battery by Constructing Novel Bimodal Nanoporous Urchin Network

Abstract

The development of facile preparation methods and novel three-dimensional structured anodes to improve cycling stability of lithium ion batteries (LIBs) is urgently needed. Herein, a dual-network ferroferric oxide/nickel oxide (Fe3O4/NiO) anode was synthesized through a facile dealloying technology, which is suitable for commercial mass manufacturing. The dual-network with high specific surface area contains a nanoplate array network and a bimodal nanoporous urchin network. It exhibits excellent electrochemical performance as an anode material for LIB, delivering a reversible capacity of 721 mAh g−1 at 100 mA g−1 after 100 cycles. The good lithium storage performance is related to the ample porous structure, which can relieve stress and mitigate the volume change in the charge/discharge process, the interconnected porous network that enhances ionic mobility and permeability, and synergistic effects of two kinds of active materials. The paper provides a new idea for the design and preparation of anode materials with a novel porous structure by a dealloying method and may promote the development of the dealloying field.

Role of nanohybrid NiO–Fe3O4 in enhancing the adsorptive performance of activated carbon synthesized from Yemeni-Khat leave in removal of Pb (II) and Hg (II) from aquatic systems

“…Furthermore, peaks at 2θ values of 37.3° and 62.9° are connected to the (200) and (220) NiO planes, which by comparison with (JCPDS no. 71-1179) indicated the existence of NiO NPs [ [54] , [55] , [56] ] on the AC surface. Overall, the new set peaks confirm the loading of nano nickle and ferric oxides upon activated carbon.…”

Tuning the magnetic properties of hard–soft Ba0.5Sr0.5Fe10Al2O19 and Ni0.1Co0.9Fe2O4 nanocomposites via one pot sol–gel auto combustion method for permanent magnet applications

“…The 2p peak of Al exhibits a binding energy of 72.03 eV [40] with about 0.4% of its trace. The Ni 2p peak is split up into 2p 3/2 and 2p 1/2 [41] and is located at 853.67 and 859.86 eV. The Co 2p spectra are deconvoluted into Co 2p 3/2 and Co 2p 1/2 [42] as shown in figure 7 with 15% of Co 2+ ions which corresponds to the tetrahedral and the octahedral sites along with the satellite peaks [43].…”