Double-layered yolk-shell microspheres with NiCo2S4-Ni9S8-C hetero-interfaces as advanced battery-type electrode for hybrid supercapacitors

Yu, Yan; Li, Anran; Lu, Chengxing; Zhai, Tengfei; Lu, Shanfu; Li, Weiman; Zhou, Wei

doi:10.1016/j.cej.2020.125316

Cited by 93 publications

(39 citation statements)

References 71 publications

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“…In addition, bimetallic MOF-derived NiCo 2 S 4 -Ni 9 S 8 -C double-layered yolk–shell microspheres were synthesized by Yan et al [ 149 ]. Owing to the existence of NiCo 2 S 4 -Ni 9 S 8 hetero-interface, the composite materials exhibited superior specific capacity (293.6 mAh g −1 at 1 A g −1 ) and good rate ability (capacitance retained 81.1% as current densities increased from 1 to 20 A g −1 ).…”

Section: Regulation Of Tmc’s Electronic Structurementioning

confidence: 99%

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

et al. 2021

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Due to their rapid power delivery, fast charging, and long cycle life, supercapacitors have become an important energy storage technology recently. However, to meet the continuously increasing demands in the fields of portable electronics, transportation, and future robotic technologies, supercapacitors with higher energy densities without sacrificing high power densities and cycle stabilities are still challenged. Transition metal compounds (TMCs) possessing high theoretical capacitance are always used as electrode materials to improve the energy densities of supercapacitors. However, the power densities and cycle lives of such TMCs-based electrodes are still inferior due to their low intrinsic conductivity and large volume expansion during the charge/discharge process, which greatly impede their large-scale applications. Most recently, the ideal integrating of TMCs and conductive carbon skeletons is considered as an effective solution to solve the above challenges. Herein, we summarize the recent developments of TMCs/carbon hybrid electrodes which exhibit both high energy/power densities from the aspects of structural design strategies, including conductive carbon skeleton, interface engineering, and electronic structure. Furthermore, the remaining challenges and future perspectives are also highlighted so as to provide strategies for the high energy/power TMCs/carbon-based supercapacitors.

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Section: Regulation Of Tmc’s Electronic Structurementioning

confidence: 99%

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

et al. 2021

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“…[ 139 ] For instance, Yan et al. prepared double‐layered yolk–shell SPs where NiCo 2 S 4 –Ni 9 S 8 NPs are embedded into an amorphous carbon matrix [ 140 ] and Jeyaranjan et al. reported ternary scalable hierarchical microspheres composed of polyaniline nanofibers, reduced graphene oxide and cerium oxide nanorods with significantly improved reversibility of the pseudocapacitive characteristics leading to a greatly extended cycle life.…”

Section: Supraparticles For Sustainabilitymentioning

confidence: 99%

Supraparticles for Sustainability

Wintzheimer

Reichstein

Groppe

et al. 2021

Adv Funct Materials

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The indispensable transformation to a (more) sustainable human society on this planet heavily relies on innovative technologies and advanced materials. The merits of nanoparticles (NPs) in this context are demonstrated widely during the last decades. Yet, it is believed that the impact of particle‐based nanomaterials to sustainability can be even further enhanced: taking NPs as building blocks enables the creation of more complex entities, so‐called supraparticles (SPs). Due to their evolving phenomena coupling, emergence, and colocalization, SPs enable completely new material functionalities. These new functionalities in SPs can be utilized to render six fields, essential to human life as it is conceived, more sustainable. These fields, selected based on an entropy‐rate‐related definition of sustainability, are as follows: 1) purification technologies and 2) agricultural delivery systems secure humans “fundamental needs.” 3) Energy storage and conversion, as well as 4) catalysis enable the “basic comfort.” 5) Extending materials lifetime and 6) bringing materials back in use ensure sustaining “modern life comfort.” In this review article, a perspective is provided on why and how the properties of SPs, and not simply properties of individual NPs or conventional bulk materials, may grant attractive alternative pathways in these fields.

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“…Recently, Zhou et al reported another new hierarchical composite electrode of NiCo 2 S 4 -Ni 9 S 8 -DYMs (DYMs = double-layered yolk-shell microspheres) from Co/Ni-btc-MOF [200]. The Co/Ni-MOF was transformed into the of NiCo 2 S 4 -Ni 9 S 8 -DYMs via two-step calcinations (500 • C for 2 h under N 2 atmosphere and another 2 h under air atmosphere) followed by sulfurization (400 • C for 3 h under N 2 atmosphere, mass ratio of S/calcined sample = 5).…”

Section: Composites Containing Co9s8mentioning

confidence: 99%

Porous Carbon-Based Supercapacitors Directly Derived from Metal–Organic Frameworks

Kim

Huh

2020

Materials

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Numerously different porous carbons have been prepared and used in a wide range of practical applications. Porous carbons are also ideal electrode materials for efficient energy storage devices due to their large surface areas, capacious pore spaces, and superior chemical stability compared to other porous materials. Not only the electrical double-layer capacitance (EDLC)-based charge storage but also the pseudocapacitance driven by various dopants in the carbon matrix plays a significant role in enhancing the electrochemical supercapacitive performance of porous carbons. Since the electrochemical capacitive activities are primarily based on EDLC and further enhanced by pseudocapacitance, high-surface carbons are desirable for these applications. The porosity of carbons plays a crucial role in enhancing the performance as well. We have recently witnessed that metal–organic frameworks (MOFs) could be very effective self-sacrificing templates, or precursors, for new high-surface carbons for supercapacitors, or ultracapacitors. Many MOFs can be self-sacrificing precursors for carbonaceous porous materials in a simple yet effective direct carbonization to produce porous carbons. The constituent metal ions can be either completely removed during the carbonization or transformed into valuable redox-active centers for additional faradaic reactions to enhance the electrochemical performance of carbon electrodes. Some heteroatoms of the bridging ligands and solvate molecules can be easily incorporated into carbon matrices to generate heteroatom-doped carbons with pseudocapacitive behavior and good surface wettability. We categorized these MOF-derived porous carbons into three main types: (i) pure and heteroatom-doped carbons, (ii) metallic nanoparticle-containing carbons, and (iii) carbon-based composites with other carbon-based materials or redox-active metal species. Based on these cases summarized in this review, new MOF-derived porous carbons with much enhanced capacitive performance and stability will be envisioned.

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Double-layered yolk-shell microspheres with NiCo2S4-Ni9S8-C hetero-interfaces as advanced battery-type electrode for hybrid supercapacitors

Cited by 93 publications

References 71 publications

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

Supraparticles for Sustainability

Porous Carbon-Based Supercapacitors Directly Derived from Metal–Organic Frameworks

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