Transient, <i>in situ</i> synthesis of ultrafine ruthenium nanoparticles for a high-rate Li–CO<sub>2</sub> battery

Qiao, Yu; Xu, Shaomao; Liu, Yang; Dai, Jiaqi; Xie, Hua; Yao, Yonggang; Mu, Xiaowei; Chen, Chaoji; Kline, Dylan J.; Hitz, Emily; Liu, Boyang; Song, Jianwei; He, Ping; Zachariah, Michael R.; Hu, Liangbing

doi:10.1039/c8ee03506g

Cited by 141 publications

(110 citation statements)

References 48 publications

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“…[ 1–3 ] Therefore, rechargeable batteries with long lifespan, low cost, and environmental friendliness are among the most important devices for electrochemical energy storage systems, especially in large‐scale ones. [ 4–8 ] Among these, the sodium‐ion batteries (SIBs) have received growing research attention, on account of the inexhaustible and low‐cost nature of sodium resource, as well as its suitable redox potential and safety. [ 9–12 ]…”

Section: Introductionmentioning

confidence: 99%

A Heterostructure Coupling of Bioinspired, Adhesive Polydopamine, and Porous Prussian Blue Nanocubics as Cathode for High‐Performance Sodium‐Ion Battery

Liu

Cheng

et al. 2020

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Prussian blue (PB) and its analogues are recognized as promising cathodes for rechargeable batteries intended for application in low‐cost and large‐scale electric energy storage. With respect to PB cathodes, however, their intrinsic crystal regularity, vacancies, and coordinated water will lead to low specific capacity and poor rate performance, impeding their application. Herein, nanocubic porous NaxFeFe(CN)6 coated with polydopamine (PDA) as a coupling layer to improve its electrochemical performance is reported, inspired by the excellent adhesive property of PDA. As a cathode for sodium‐ion batteries, the NaxFeFe(CN)6 electrode coupled with PDA delivers a reversible capacity of 93.8 mA h g−1 after 500 cycles at 0.2 A g−1, and a discharge capacity of 72.6 mA h g−1 at 5.0 A g−1. The sodium storage mechanism of this NaxFeFe(CN)6 coupled with PDA is revealed via in situ Raman spectroscopy. The first‐principles computational results indicate that FeII sites in PB prefer to couple with the robust PDA layer to stabilize the PB structure. Moreover, the sodium‐ion migration in the PB structure is enhanced after coating with PDA, thus improving the sodium storage properties. Both experiments and computational simulations present guidelines for the rational design of nanomaterials as electrodes for energy storage devices.

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Section: Introductionmentioning

confidence: 99%

A Heterostructure Coupling of Bioinspired, Adhesive Polydopamine, and Porous Prussian Blue Nanocubics as Cathode for High‐Performance Sodium‐Ion Battery

Liu

Cheng

et al. 2020

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“…A Vision Research Phantom Miro M110 high-speed camera based on color ratio pyrometry was employed to measure the temperature evolution of the reactor with videos recorded at 4000 frames s −1 , as reported in the previous literature. [47,48] Materials Characterization: The chemical composition and crystal structure of the samples were characterized by X-ray diffraction (Bruker, D8 Advance, Cu Kα radiation, λ = 1.5406 Å). The morphology of the product was examined by a Hitachi SU-70 FE-SEM and JEOL 2100 TEM at the acceleration voltages of 5 and 200 kV, respectively.…”

Section: Methodsmentioning

confidence: 99%

Thermal Radiation Synthesis of Ultrafine Platinum Nanoclusters toward Methanol Oxidation

Qiao

Liu

et al. 2020

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Direct methanol fuel cells (DMFCs) are considered as a promising candidate for portable electronic devices and small electric vehicles due to their high gravimetric and volumetric energy densities. The operation of DMFCs requires efficient catalysts, especially on the anode to promote methanol oxidation reaction (MOR). To date, platinum has emerged as a chief contender for MOR. Unfortunately, most catalysts suffer from severe CO poisoning, which can passivate the catalytic surface and decrease the activity over time. Herein, a transient, thermal radiation method to synthesize ultrafine platinum nanoclusters (0.68 ± 0.13 nm) supported on carbon black (Pt NC/CB) is demonstrated. The sample demonstrates a great CO poisoning resistance and excellent activity toward MOR. The ultrafine platinum nanoclusters with increased active sites can promote the oxidation of CO at potential as low as 0.4 V. The Pt NC/CB displays an onset potential of 0.4 V and a peak current density of 1.30 mA cm−2ECSA (electrochemical active surface area), which is superior than that of reported catalysts (0.57–1.06 mA cm−2ECSA), while many of the catalysts are alloys involving noble metals. This work showcases an efficient method to prepare Pt nanoclusters with high MOR activity and great CO poisoning resistance.

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“…In addition, the cell operates even at a high-current density of 20.0 A g −1 and enhances the CO 2 -capturing capacity, in contrast to the aprotic electrolyte-based Li-CO 2 battery with a Ru catalyst ( Supplementary Fig. 20) 24 . We observed a sufficiently stable cycle capability of the Li-CO 2 battery at a current density at 2.0 A g −1 (Fig.…”

Section: Synthesis Ofmentioning

confidence: 99%

“…Although the Li-CO 2 cell effectively captures CO 2 gas during the discharge process, the high charge overpotential caused by the insulating and insoluble characteristics of Li 2 CO 3 in the aprotic electrolyte should be reduced to prevent the severe parasitic reaction 7,15,16,23 . Therefore, most recent research on Li-CO 2 cells has focused on developing air-breathing cathodes such as metal catalysts, mediators, and metal oxide materials for reducing the charge overpotential and increasing the cycle ability 8,18,[24][25][26][27][28] . However, because of the sluggish electron transfer in the Li 2 CO 3 insulator, most of the reported studies investigated Li-CO 2 cells with mild current densities (Supplementary Table 1), which are not appropriate for high-performance battery applications, the limiting factor for the CO 2 capture rate; thus, enhancement of the rate performance certainly is advantageous to facilitate practical future battery and CO 2 storage applications of Li-CO 2 cell.…”

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confidence: 99%

Synergistic effect of quinary molten salts and ruthenium catalyst for high-power-density lithium-carbon dioxide cell

et al. 2020

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With a recent increase in interest in metal-gas batteries, the lithium-carbon dioxide cell has attracted considerable attention because of its extraordinary carbon dioxide-capture ability during the discharge process and its potential application as a power source for Mars exploration. However, owing to the stable lithium carbonate discharge product, the cell enables operation only at low current densities, which significantly limits the application of lithium-carbon dioxide batteries and effective carbon dioxide-capture cells. Here, we investigate a high-performance lithium-carbon dioxide cell using a quinary molten salt electrolyte and ruthenium nanoparticles on the carbon cathode. The nitrate-based molten salt electrolyte allows us to observe the enhanced carbon dioxide-capture rate and the reduced dischargecharge over-potential gap with that of conventional lithium-carbon dioxide cells. Furthermore, owing to the ruthernium catalyst, the cell sustains its performance over more than 300 cycles at a current density of 10.0 A g −1 and exhibits a peak power density of 33.4 mW cm −2 .

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Transient, in situ synthesis of ultrafine ruthenium nanoparticles for a high-rate Li–CO₂ battery

Abstract: Ultrafine Ru nanoparticles anchored on freestanding activated carbon nanofibers with porous structure are synthesized as a high performing cathode for Li–CO2 batteries via a transient, in situ thermal shock method.

Cited by 141 publications

References 48 publications

A Heterostructure Coupling of Bioinspired, Adhesive Polydopamine, and Porous Prussian Blue Nanocubics as Cathode for High‐Performance Sodium‐Ion Battery

A Heterostructure Coupling of Bioinspired, Adhesive Polydopamine, and Porous Prussian Blue Nanocubics as Cathode for High‐Performance Sodium‐Ion Battery

Thermal Radiation Synthesis of Ultrafine Platinum Nanoclusters toward Methanol Oxidation

Synergistic effect of quinary molten salts and ruthenium catalyst for high-power-density lithium-carbon dioxide cell

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Transient, in situ synthesis of ultrafine ruthenium nanoparticles for a high-rate Li–CO2 battery

Abstract: Ultrafine Ru nanoparticles anchored on freestanding activated carbon nanofibers with porous structure are synthesized as a high performing cathode for Li–CO2 batteries via a transient, in situ thermal shock method.

Cited by 141 publications

References 48 publications

A Heterostructure Coupling of Bioinspired, Adhesive Polydopamine, and Porous Prussian Blue Nanocubics as Cathode for High‐Performance Sodium‐Ion Battery

A Heterostructure Coupling of Bioinspired, Adhesive Polydopamine, and Porous Prussian Blue Nanocubics as Cathode for High‐Performance Sodium‐Ion Battery

Thermal Radiation Synthesis of Ultrafine Platinum Nanoclusters toward Methanol Oxidation

Synergistic effect of quinary molten salts and ruthenium catalyst for high-power-density lithium-carbon dioxide cell

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Transient, in situ synthesis of ultrafine ruthenium nanoparticles for a high-rate Li–CO₂ battery