Nitrogen-doped carbon nanotubes as an excellent substrate for electroless deposition of Pd nanoparticles with a high efficiency toward the hydrogen evolution reaction

Zhou, Siliao; Chen, Xianghan; Yu, Ping; Gao, Feng; Mao, Lanqun

doi:10.1016/j.elecom.2018.04.015

Cited by 21 publications

(6 citation statements)

References 34 publications

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“…With the addition of filter circuits composed of 3, 4 and 5 NCNTs, respectively, all the output signals maintain a stable state. The NCNTs maintain their level of performance at a frequency range of 1 ∼ 100 000 Hz and an amplitude window 0-10 V, which is superior to the results shown in other similar works (see table 1 in SI [9,[27][28][29][30][31][32]).…”

Section: High Voltage and High Frequency Filtering Performance Of Ser...contrasting

confidence: 55%

High performance of filter capacitor based on nitrogen-doped carbon nanotube supercapacitor

Zhang¹,

Guan²,

Ji³

et al. 2020

Nanotechnology

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The high-performance filter capacitor is a hot research topic in the field of filter circuits for flexible and wearable devices, whereas traditional aluminum electrolytic capacitors still experience widespread problems in terms of large error factors and poor stability. To avoid these disadvantages, in this work, we have developed a liquid dual-layer supercapacitor (SC). When it is employed as the filter capacitor in a filter circuit, any waveform signal can be transformed into a linear signal. The maximum fluctuation of the output signal is less than 16 mV; the SC also demonstrates excellent filtering stability in a frequency range of 1 ∼ 100 000 Hz, as well as an amplitude window of 0 ∼ 10 V. In this framework, our filter SC demonstrates unparalleled processing properties, and can greatly improve the stability and extend the lifetime of the entire electronic circuit. The fact that the requirements of high-end electronic products can be fulfilled due to the contribution of this filter SC are particularly significant.

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Section: High Voltage and High Frequency Filtering Performance Of Ser...contrasting

confidence: 55%

High performance of filter capacitor based on nitrogen-doped carbon nanotube supercapacitor

Zhang¹,

Guan²,

Ji³

et al. 2020

Nanotechnology

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“…Generally speaking, Tafel analysis mainly focuses on three steps when evaluating catalytic performance in acidic media . The first step necessarily is often known as the Volmer reaction: H 3 O + + e – → H ads + H 2 O (the Tafel slope is theoretically 120 mV dec –1 ); the other two steps optionally are the Heyrovsky reaction and the Tafel reaction: H adsorbed + H 3 O + + e – → H 2 + H 2 O (40 mV dec –1 ) and H adsorbed + H adsorbed → H 2 (30 mV dec –1 ), respectively . As shown in Figure c, compared with the Tafel slope of 20 wt % Pt/C (19.0 mV dec –1 ), the values for Pt 2 Ni 2 /BMNC (17.7 mV dec –1 ) and Pt 2 Ni/BMNC (16.1 mV dec –1 ) are lower, reflecting that the synthesized catalyst presents excellent kinetic performance.…”

Section: Resultsmentioning

confidence: 99%

“…48 The first step necessarily is often known as the Volmer reaction: H 3 O + + e − → H ads + H 2 O (the Tafel slope is theoretically 120 mV dec −1 ); the other two steps optionally are the Heyrovsky reaction and the Tafel reaction: H adsorbed + H 3 O + + e − → H 2 + H 2 O (40 mV dec −1 ) and H adsorbed + H adsorbed → H 2 (30 mV dec −1 ), respectively. 49 As shown in Figure 6c, compared with the Tafel slope of 20 wt % Pt/C (19.0 mV dec −1 ), the values for Pt 2 Ni 2 /BMNC (17.7 mV dec −1 ) and Pt 2 Ni/BMNC (16.1 mV dec −1 ) are lower, reflecting that the synthesized catalyst presents excellent kinetic performance. According to the above description of Tafel analysis, it can be seen that the HER of all catalysts occurs through the Volmer−Tafel reaction mechanism, that is, the rate-limiting step is the Tafel reaction.…”

Section: Introductionmentioning

confidence: 90%

PtNi Supported on ZIF-Derived Porous Carbon as a High-Efficiency Acidic Hydrogen Evolution Catalyst

Xiu

et al. 2021

Energy Fuels

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Hydrogen production by water cracking is an important means to solve the energy crisis and environmental problems. Low-Pt-content electrocatalysts can keep better balance between activity and cost. In this paper, we propose a simple and effective synthesis method to synthesize a bimetallic porous nitrogen-doped carbon (BMNC)-supported ultrafine Pt x Ni y alloy hydrogen evolution reaction (HER) catalyst. BMNC is derived from a Zn−Co zeolite imidazolate skeleton (ZIFS) and can be used as a highefficiency catalyst support for the HER in acidic solutions. The optimal sample Pt 2 Ni 2 /BMNC with a Pt content of 8.4 wt % shows superior performance with the lowest overpotential (η 10 = 27 mV) and the smallest Tafel slope (17.7 mV dec −1 ), which is attributed to the merits of smaller charge transfer resistance, porous carbon support, and the alloy effect between Pt and Ni. After continuous working for 36 000 s at a voltage of −0.272 V, there is 10.6% decay of catalyst potential. We hope that this work can provide useful information to prepare efficient HER electrocatalysts.

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“…The derived Tafel curve from the polarization curve is applied to elucidate the kinetics of the HER process. Under acidic conditions, hydrogen evolution reaction is generally analyzed by two mechanisms in three steps [29,30]. The three steps are the Volmer, Heyrovsky, and Tafel steps, and the corresponding Tafel slope is 120 mV dec −1 , 40 mV dec −1 and 30 mV dec −1 , respectively.…”

Section: Electrochemical Activitymentioning

confidence: 99%

PtNi Alloy Coated in Porous Nitrogen-Doped Carbon as Highly Efficient Catalysts for Hydrogen Evolution Reactions

Song

Wang

et al. 2022

Molecules

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The development of low platinum loading hydrogen evolution reaction (HER) catalysts with high activity and stability is of great significance to the practical application of hydrogen energy. This paper reports a simple method to synthesize a highly efficient HER catalyst through coating a highly dispersed PtNi alloy on porous nitrogen-doped carbon (MNC) derived from the zeolite imidazolate skeleton. The catalyst is characterized and analyzed by physical characterization methods, such as XRD, SEM, TEM, BET, XPS, and LSV, EIS, it, v-t, etc. The optimized sample exhibits an overpotential of only 26 mV at a current density of 10 mA cm−2, outperforming commercial 20 wt% Pt/C (33 mV). The synthesized catalyst shows a relatively fast HER kinetics as evidenced by the small Tafel slope of 21.5 mV dec−1 due to the small charge transfer resistance, the alloying effect between Pt and Ni, and the interaction between PtNi alloy and carrier.

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Nitrogen-doped carbon nanotubes as an excellent substrate for electroless deposition of Pd nanoparticles with a high efficiency toward the hydrogen evolution reaction

Cited by 21 publications

References 34 publications

High performance of filter capacitor based on nitrogen-doped carbon nanotube supercapacitor

High performance of filter capacitor based on nitrogen-doped carbon nanotube supercapacitor

PtNi Supported on ZIF-Derived Porous Carbon as a High-Efficiency Acidic Hydrogen Evolution Catalyst

PtNi Alloy Coated in Porous Nitrogen-Doped Carbon as Highly Efficient Catalysts for Hydrogen Evolution Reactions

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