Two-Level Biomimetic Designs Enable Intelligent Stress Dispersion for Super-Foldable C/NiS Nanofiber Free-Standing Electrode

Zan, Guangtao; Wu, Tong; Dong, Wenchen; Zhou, Junchen; Tu, Teng; Xu, Ruoxuan; Chen, Yun; Wang, Ying; Wu, Qingsheng

doi:10.1007/s42765-022-00162-7

Cited by 37 publications

(20 citation statements)

References 52 publications

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“…The CV curves were obtained at different scan rates from 0.1 to 2 mV s –1 , and the relationship plots of the log ( i ) and log ( v ) were obtained using the main oxidation peak A and reduction peak B during the discharge/charge processes (Figure a,b). The calculated b values for the OFC@CoS 2 /CoO@rGO are 0.7962 and 0.8581 for the reduction and oxidation processes, respectively, which indicates the obvious capacitance behavior during the discharge/charge processes. , The contribution ratios of capacitive behavior are further calculated using eqs and , where k 1 v and k 2 v 1/2 represent the contributions of capacitive and diffusion-controlled behaviors, respectively. The obtained contribution ratios of capacitive behavior (i.e., k 1 v /( k 1 v + k 2 v 1/2 ) are 61.0%, 65.9%, 72.9%, 77.8%, and 88%, respectively, at scan rates of 0.1–2 mV s –1 for OFC@CoS 2 /CoO@rGO, as shown in Figure c.…”

Section: Resultsmentioning

confidence: 99%

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Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

Sui

Zan

Wen

et al. 2022

ACS Appl. Mater. Interfaces

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Transition metal sulfides and oxides with high theoretical capacities have been regarded as promising anode candidates for a sodium-ion battery (SIB); however, they have critical issues including sluggish electrochemical kinetics and poor long-term stability. Herein, a dual carbon design strategy is proposed to integrate with highly active heterojunctions to overcome the above issues. In this new design, CoS2/CoO hollow dodecahedron heterojunctions are sandwiched between open framework carbon-spheres (OFCs) and a reduced graphene oxide (rGO) nanomembrane (OFC@CoS2/CoO@rGO). The CoS2/CoO heterojunctions effectively promote electron transfer on their surface and provide more electrochemical active sites through their hierarchical hollow structures assembled by nanodots. Meanwhile, the dual-carbon framework forms a highly conductive network that enables a better rate capability. More importantly, the dual carbon can greatly buffer volume expansion and stable reaction interfaces of electrode material during the charge/discharge process. Benefitting from their synergistical effects, the OFC@CoS2/CoO@rGO electrode achieves a high reversible capacity of 460 mAh g–1 at 0.05 A g–1 and still maintains 205.3 mAh g–1 even when current density is increased by 200 times when used as an anode material for SIBs. Their cycling property is also remarkable with a maintained capacity of 161 mAh g–1 after 3500 charging/discharging cycles at a high current density of 1 A g–1. The dual-carbon strategy is demonstrated to be effective for enhanced reaction kinetics and long-term cycling property, providing siginificant guidance for preparing other high-performance electrode materials.

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Section: Resultsmentioning

confidence: 99%

“…The calculated b values for the OFC@CoS 2 /CoO@rGO are 0.7962 and 0.8581 for the reduction and oxidation processes, respectively, which indicates the obvious capacitance behavior during the discharge/charge processes. 53,54 The contribution ratios of capacitive behavior are further calculated using eqs 6 and 7, 55…”

Section: Av Bmentioning

confidence: 99%

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

Sui

Zan

Wen

et al. 2022

ACS Appl. Mater. Interfaces

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“…In addition, this possibility of coating metallic nanowires with external layers may enlarge the potential applications of nanowires, for example, producing Au biocompatible coatings in electrodeposited nanowires for biomedical [ 22 , 34 , 35 ] or sensing [ 36 ] applications. Finally, providing that the nanowires are standing up on a flexible substrate with a total large active area, these core–shell structures may be designed to have applications in catalysis [ 37 ], neural applications [ 33 , 38 , 39 ] or flexible devices [ 40 , 41 , 42 ], among others.…”

Section: Results and Discussionmentioning

confidence: 99%

Electrodeposited Magnetic Nanowires with Radial Modulation of Composition

et al. 2022

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In the last few years, magnetic nanowires have gained attention due to their potential implementation as building blocks in spintronics applications and, in particular, in domain-wall- based devices. In these devices, the control of the magnetic properties is a must. Cylindrical magnetic nanowires can be synthesized rather easily by electrodeposition and the control of their magnetic properties can be achieved by modulating the composition of the nanowire along the axial direction. In this work, we report the possibility of introducing changes in the composition along the radial direction, increasing the degrees of freedom to harness the magnetization. In particular, we report the synthesis, using template-assisted deposition, of FeNi (or Co) magnetic nanowires, coated with a Au/Co (Au/FeNi) bilayer. The diameter of the nanowire as well as the thickness of both layers can be tuned at will. In addition to a detailed structural characterization, we report a preliminary study on the magnetic properties, establishing the role of each layer in the global collective behavior of the system.

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“…A high performance gas sensor fabricated by sensitive materials will be widely used in environmental monitoring, artificial intelligence, the Internet of Things, and wearable devices in the future [ 47 , 48 , 49 ].…”

Section: Resultsmentioning

confidence: 99%

Enhanced NO2 Sensing Performance of ZnO-SnO2 Heterojunction Derived from Metal-Organic Frameworks

Ren

Zhang

et al. 2022

Nanomaterials

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Nitrogen dioxide (NO2) is the major reason for acid rain and respiratory illness in humans. Therefore, rapid, portable, and effective detection of NO2 is essential. Herein, a novel and simple method to construct a ZnO-SnO2 heterojunction is fabricated by pyrolysis of bimetallic metal organic frameworks. The sensitivity of ZnO-SnO2 heterojunction towards 0.2 ppm NO2 under 180 °C is 37, which is 3 times that of pure ZnO and SnO2. The construction of heterojunction speeds up the response-recovery process, and this kind of material exhibits lower detection limit. The construction of heterojunction can significantly improve the NO2 sensitivity. The selectivity, stability, and moisture resistance of ZnO-SnO2 heterojunction are carried out. This could enable the realization of highly selective and sensitive portable detection of NO2.

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Two-Level Biomimetic Designs Enable Intelligent Stress Dispersion for Super-Foldable C/NiS Nanofiber Free-Standing Electrode

Cited by 37 publications

References 52 publications

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

Electrodeposited Magnetic Nanowires with Radial Modulation of Composition

Enhanced NO2 Sensing Performance of ZnO-SnO2 Heterojunction Derived from Metal-Organic Frameworks

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Two-Level Biomimetic Designs Enable Intelligent Stress Dispersion for Super-Foldable C/NiS Nanofiber Free-Standing Electrode

Cited by 37 publications

References 52 publications

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS2/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS2/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

Electrodeposited Magnetic Nanowires with Radial Modulation of Composition

Enhanced NO2 Sensing Performance of ZnO-SnO2 Heterojunction Derived from Metal-Organic Frameworks

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Product

Resources

About

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating

Dual Carbon Design Strategy for Anodes of Sodium-Ion Battery: Mesoporous CoS₂/CoO on Open Framework Carbon-Spheres with rGO Encapsulating