Edge-enriched Ni-N4 atomic sites embedded enoki-mushroom-like carbon nanotubes assembling hollow fibers for CO2 conversion and flexible Zn-air battery

Zhou, Yang; Xie, Mingxue; Song, Yu; Yan, Dukang; Wang, Zili; Zhang, Sen; Deng, Chao

doi:10.1016/j.ensm.2022.02.021

Cited by 41 publications

(25 citation statements)

References 66 publications

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“…[ 27 ] The characteristic peak of NiPc at 8339 eV could be attributed to the symmetry of the square‐plane M‐N 4 . [ 20,30 ] However, the intensity of the corresponding absorption peak of Ni@BNHC was less than that of NiPc, which might be on account of the nonplanar or asymmetrical characteristics of the edge N‐Ni formed by the former. [ 14,32 ] Although the shape of the k 2 χ( k ) oscillation curve of Ni@BNHC was similar to that of NiPc, their oscillating frequencies were different (Figure S5b, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…[ 13–15 ] Especially the M–N 4 coordination structure with its unique electronic distribution, make it yield extraordinary talents in catalysis, but it is rarely explored in the field of rechargeable alkali ion batteries. [ 16–20 ] Recently, Liu et al. first reported N, S co‐doped carbon nanospheres supported by Zn single atoms (Zn‐N‐S@C), [ 21 ] and verified that the asymmetric electron distribution of Zn‐N 4 ‐S coordination promoted the adsorption of K + on the surface of carbon materials.…”

Section: Introductionmentioning

confidence: 99%

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Edge Coordination of Ni Single Atoms on Hard Carbon Promotes the Potassium Storage and Reversibility

Chen

Han

Shen

et al. 2023

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Hard carbon is the most promising anode for potassium‐ion batteries (PIBs) due to its low cost and abundance, but its limited storage capacity remains a major challenge. Herein, edge coordination of metal single atoms is proved to be an effective strategy for promoting potassium storage in hard carbon for the first time, taking B, N co‐doped hard carbon nanotubes anchored by edge Ni‐N4‐B atomic sites (Ni@BNHC) as an example. It is revealed that edge Ni‐N4‐B can provide active sites for interlayer adsorption of K+ and that Ni atoms can facilitate the reversibility of K+ storage on N and B atoms. Furthermore, an unprecedentedly reversible K+ storage capacity of 694 mAh g−1 at 0.05 A g−1 is realized by introducing commercial carbon nanotubes. This work provides a new perspective for the application of single‐atom engineering and the design of high‐performance carbon anodes for PIBs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Edge Coordination of Ni Single Atoms on Hard Carbon Promotes the Potassium Storage and Reversibility

Chen

Han

Shen

et al. 2023

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“…Therefore, constructing CCEs with large specific surface areas and effective active sites to achieve a significant effective active area is a fascinating strategy for promoting the potential difference stability between a pair of electrodes. Generally, carbon fibers (CFs) can offer a large specific surface area , and abundant active sites, , while good conductivity can provide high electrochemical properties at work. So utilizing these materials as the main source of large specific surface area and reactive active sites in CCEs could effectively improve the potential difference stability and could be used in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Controllable 3D Flower-Like Ag-CF Electrodes as Flexible Marine Electric Field Sensors with High Stability

et al. 2023

Inorg. Chem.

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Construction of three-dimensional (3D) flower-like nanostructures with controlled morphologies has emerged as an attractive tool by scientists in the marine electric field sensor research field due to their peculiar structural features. Herein, novel 3D flower-like Ag-CF capacitive composite electrodes have been created by an eco-friendly water-bath strategy via AgNO3 as a sliver source and subsequently compounded with carbon fibers (CFs) pretreated by thermal oxidation. A series of electrode samples with various morphologies obtained by modulating different reaction times and temperatures bring about the dominant formation mechanism of these nanostructures and the influence behavior on the CF electrode in detail. Especially, the 3D flower-like Ag-CF electrode shows a large surface area acquired under the conditions of 80 °C and 15 min, which can provide more electroactive sites in electrochemical analysis and exhibit a maximum areal specific capacitance of 619.75 mF·cm–2 at a scanning speed of 10 mV·s–1. This is mainly due to the synergistic behavior of the unique 3D flower-like morphology and the large specific surface area of CFs. Furthermore, a cylinder-shaped Ag-CF sensor is designed, which delivers a superior potential difference of 33.08 μV, a potential difference drift of 18.62 μV/24 h for 30 days, and a self-noise of 0.92 nV/rt (Hz)@1 Hz. In this work, the intriguing synthesis strategy can be a promising facile approach to manufacture the controllable 3D flower-like Ag-CF electrode for electric field sensor applications.

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“…The signicantly increased consumption of fossil fuels and critical environmental concerns have encouraged the pursuit of environment-friendly and renewable energy technologies. [1][2][3][4][5] Fuel cells and metal-air batteries with the merits of low emission, high energy density and superior energy conversion efficiency support pivotal approaches to clean energy challenges. [6][7][8][9][10][11][12][13] An essential step that signicantly limits the performance of these devices is the cathodic oxygen reduction reaction (ORR), which depends heavily on the electrocatalysts containing platinum group metals (PGMs).…”

Section: Introductionmentioning

confidence: 99%

Boosting the oxygen reduction reaction behaviour of atomic Fe–N₄active sites in porous honeycomb-like carbonviaP heteroatom doping

Wang

Fan

et al. 2022

J. Mater. Chem. A

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Edge-enriched Ni-N4 atomic sites embedded enoki-mushroom-like carbon nanotubes assembling hollow fibers for CO2 conversion and flexible Zn-air battery

Cited by 41 publications

References 66 publications

Edge Coordination of Ni Single Atoms on Hard Carbon Promotes the Potassium Storage and Reversibility

Edge Coordination of Ni Single Atoms on Hard Carbon Promotes the Potassium Storage and Reversibility

Controllable 3D Flower-Like Ag-CF Electrodes as Flexible Marine Electric Field Sensors with High Stability

Boosting the oxygen reduction reaction behaviour of atomic Fe–N₄active sites in porous honeycomb-like carbonviaP heteroatom doping

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Edge-enriched Ni-N4 atomic sites embedded enoki-mushroom-like carbon nanotubes assembling hollow fibers for CO2 conversion and flexible Zn-air battery

Cited by 41 publications

References 66 publications

Edge Coordination of Ni Single Atoms on Hard Carbon Promotes the Potassium Storage and Reversibility

Edge Coordination of Ni Single Atoms on Hard Carbon Promotes the Potassium Storage and Reversibility

Controllable 3D Flower-Like Ag-CF Electrodes as Flexible Marine Electric Field Sensors with High Stability

Boosting the oxygen reduction reaction behaviour of atomic Fe–N4active sites in porous honeycomb-like carbonviaP heteroatom doping

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Product

Resources

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Boosting the oxygen reduction reaction behaviour of atomic Fe–N₄active sites in porous honeycomb-like carbonviaP heteroatom doping