2021
DOI: 10.1021/acsaem.0c02704
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In Situ Construction of a Heterostructured Zn–Mo–Ni–O–S Hollow Microflower for High-Performance Hybrid Supercapacitors

Abstract: The rational design of a multicomponent electrode material with hollow structures grown on the conductive substrate is an effective approach to boost the electrochemical performance of supercapacitors (SCs). However, there is still a challenge in the in situ construction of such unique structures on the conductive substrate. Herein, a heterostructured multicomponent electrode material, a Zn−Mo−Ni−O−S hollow microflower (Zn−Mo−Ni−O−S HMF) in situ grown on a Ni foam (NF), is fabricated by a simple top-down strat… Show more

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Cited by 10 publications
(6 citation statements)
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“…The battery-type behavior with a couple of privileged redox peaks mainly originates from the valence state change of metal ions and multielectron-transfer reactions. The positions of the observed redox peaks during cathodic and anodic sweeps validate the different polarization characteristics of active components . These redox signatures certify the existence of reversible Faradaic redox reactions at interfaces, which are attributed to M–B/M–B–OH (M represents Ni and Zn) during the electrochemical process. The possible redox reaction mechanism can be addressed as follows: The Zn 2+ redox signal may possibly overlap with the Ni 2+/ Ni 3+ high intense peaks, which appear because of its minute occurrence.…”
Section: Resultsmentioning
confidence: 56%
See 1 more Smart Citation
“…The battery-type behavior with a couple of privileged redox peaks mainly originates from the valence state change of metal ions and multielectron-transfer reactions. The positions of the observed redox peaks during cathodic and anodic sweeps validate the different polarization characteristics of active components . These redox signatures certify the existence of reversible Faradaic redox reactions at interfaces, which are attributed to M–B/M–B–OH (M represents Ni and Zn) during the electrochemical process. The possible redox reaction mechanism can be addressed as follows: The Zn 2+ redox signal may possibly overlap with the Ni 2+/ Ni 3+ high intense peaks, which appear because of its minute occurrence.…”
Section: Resultsmentioning
confidence: 56%
“…The positions of the observed redox peaks during cathodic and anodic sweeps validate the different polarization characteristics of active components . These redox signatures certify the existence of reversible Faradaic redox reactions at interfaces, which are attributed to M–B/M–B–OH (M represents Ni and Zn) during the electrochemical process. The possible redox reaction mechanism can be addressed as follows: The Zn 2+ redox signal may possibly overlap with the Ni 2+/ Ni 3+ high intense peaks, which appear because of its minute occurrence. This implies that the energy-storage process can be controlled by the visible pseudocapacitive characteristics and synergetic effects of redox reactions directed by the electrochemically active components in the hybrid electrode.…”
Section: Resultsmentioning
confidence: 56%
“…S6e, ESI †) of Ni-Mo-O, M-O bonds (530.7 eV), M-OH bonds (531.5 eV), and surface-adsorbed water molecules (533.0 eV) are the three principal peaks that are clearly discernible. 26,27,46 The contact angle test of the as-prepared materials on HMF solution is shown in Fig. S7 (ESI †), the 23.71 of Ni 9 S 8 /MoS 2 /Ni 3 S 2 is much higher than the 44.51 of Ni-Mo-O and 1021 of initial Ni foam, indicating that the sulfurized Ni 9 S 8 /MoS 2 /Ni 3 S 2 has better adsorption for HMF, favourable to HMFOR.…”
Section: Resultsmentioning
confidence: 99%
“…Carbon materials exhibit high surface area and excellent rate performance, but they have low specific capacitance . Metal oxides/sulfides have good energy density and high specific capacitance, but they also present some disadvantages, such as inferior rate capability, low cycling life, and poor electrical conductivity. , Therefore, it is significant to explore some novel high-energy electrode materials with remarkable rate capability and high lifespan.…”
Section: Introductionmentioning
confidence: 99%