A novel porous rod with nanosphere CuS2/NiFe2O4 nanocomposite for low-cost high-performance energy storage system

Manzoor, Sumaira; Alburaih, H. A.; Nisa, Mehar Un; Aman, Salma; Abdullah, Muhammad; Abid, Abdul Ghafoor

doi:10.1007/s10854-022-09584-w

Cited by 32 publications

(3 citation statements)

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“…[8][9][10][11] Recently, CuS 2 characterized by a flake-like structure and notable electrochemical properties, has recently been employed extensively as a conversion electrode material. [12][13][14] However, CuS 2 faces the challenge of poor cycling stability and rate performance triggered by the dramatic volume expansion accompanied by structural reorganization during the conversion reaction. [15] Constructing various micro-and nanostructures for electrode materials has become an effective way to improve the electrochemical performance of LIBs.…”

Section: Introductionmentioning

confidence: 99%

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Revealing the Dynamic Lithiation Process of Copper Disulfide by in Situ TEM

Hu,

Ren

et al. 2024

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Transition metal oxides, fluorides, and sulfides are extensively studied as candidate electrode materials for lithium‐ion batteries driven by the urgency of developing next‐generation higher energy density lithium batteries. These conversion‐type electrode materials often require nanosized active materials to enable a “smooth” lithiation and de‐lithiation process during charge/discharge cycles, determined by their size, structure, and phase. Herein, the structural and chemical changes of Copper Disulfide (CuS2) hollow nanoparticles during the lithiation process through an in situ transmission electron microscopy (TEM) method are investigated. The study finds the hollow structure of CuS2 facilitates the quick formation of fluidic Li2S “drops,” accompanied by a de‐sulfurization to the Cu7S4 phase. Meanwhile, the metallic Cu phase emerges as fine nanoparticles and grows into nano‐strips, which are embedded in the Li2S/Cu7S4 matrix. These complex nanostructured phases and their spatial distribution can lead to a low de‐lithiation barrier, enabling fast reaction kinetics.

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Section: Introductionmentioning

confidence: 99%

“…[ 8–11 ] Recently, CuS 2 characterized by a flake‐like structure and notable electrochemical properties, has recently been employed extensively as a conversion electrode material. [ 12–14 ]…”

Section: Introductionmentioning

confidence: 99%

Revealing the Dynamic Lithiation Process of Copper Disulfide by in Situ TEM

Hu,

Ren

et al. 2024

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“…In recent years, NiFe 2 O 4 has been employed for various applications like electrochemical sensors [23,30,31], water splitting [32][33][34], solar cells [35], and supercapacitors [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of NiFe2O4 Nano-Spinel Oxide-Decorated Carbon Nanotubes for Efficient Capacitive Performance—Effect of Electrolyte Concentration

Bashal,

Hefnawy,

Ahmed

et al. 2023

Nanomaterials

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Energy storage applications received great attention due to environmental aspects. A green method was used to prepare a composite of nickel–iron-based spinel oxide nanoparticle@CNT. The prepared materials were characterized by different analytical methods like X-ray diffraction, X-ray photon spectroscopy (XPS), scanning electron microscopy (SEM), and transmitted electron microscopy (TEM). The synergistic effect between nickel–iron oxide and carbon nanotubes was characterized using different electrochemical methods like cyclic voltammetry (CV), galvanostatic charging/discharging (GCD), and electrochemical impedance spectroscopy (EIS). The capacitances of the pristine NiFe2O4 and NiFe2O4@CNT were studied in different electrolyte concentrations. The effect of OH− concentrations was studied for modified and non-modified surfaces. Furthermore, the specific capacitance was estimated for pristine and modified NiFe2O4 at a wide current range (5 to 17 A g−1). Thus, the durability of different surfaces after 2000 cycles was studied, and the capacitance retention was estimated as 78.8 and 90.1% for pristine and modified NiFe2O4. On the other hand, the capacitance rate capability was observed as 65.1% (5 to 17 A g−1) and 62.4% (5 to 17 A g−1) for NiFe2O4 and NiFe2O4@CNT electrodes.

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