Single-precursor design and solvent-free nanocasting synthesis of N/S/O-doped ordered mesoporous carbons with trimodal pores for excellent oxygen reduction

Lin, Yaqian; Hu, Zeyu; Shao, Ying; Chen, Zhi; Wei, Xiangru; Wu, Zhangxiong

doi:10.1016/j.carbon.2021.07.030

Cited by 13 publications

(10 citation statements)

References 75 publications

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“…For instance, the presence of sulfur in carbon sorbents has been demonstrated to enhance their CO 2 capture capacity through providing enhanced interactions between the sorbent and the gas molecule 50 – 52 . Similarly, Lin et al synthesized ordered nitrogen, sulfur, and oxygen doped mesoporous carbons using cysteine as a carbon precursor 53 , demonstrating that the presence of sulfur in carbon framework was critical in enhancing the performance of OMCs for oxygen reduction reactions. Conventional templating methods either require the use of heteroatom-containing carbon precursors or additional materials (e.g.…”

Section: Resultsmentioning

confidence: 99%

“…Similarly, Lin et al synthesized ordered nitrogen, sulfur, and oxygen doped mesoporous carbons using cysteine as a carbon precursor 53 , demonstrating that the presence of sulfur in carbon framework was critical in enhancing the performance of OMCs for oxygen reduction reactions. Conventional templating methods either require the use of heteroatom-containing carbon precursors or additional materials (e.g.…”

Section: Fabrication Of Ordered Mesoporous Materials From Sulfonated ...mentioning

confidence: 99%

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Direct synthesis of ordered mesoporous materials from thermoplastic elastomers

et al. 2023

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The ability to manufacture ordered mesoporous materials using low-cost precursors and scalable processes is essential for unlocking their enormous potential to enable advancement in nanotechnology. While templating-based methods play a central role in the development of mesoporous materials, several limitations exist in conventional system design, including cost, volatile solvent consumption, and attainable pore sizes from commercial templating agents. This work pioneers a new manufacturing platform for producing ordered mesoporous materials through direct pyrolysis of crosslinked thermoplastic elastomer-based block copolymers. Specifically, olefinic majority phases are selectively crosslinked through sulfonation reactions and subsequently converted to carbon, while the minority block can be decomposed to form ordered mesopores. We demonstrate that this process can be extended to different polymer precursors for synthesizing mesoporous polymer, carbon, and silica. Furthermore, the obtained carbons possess large mesopores, sulfur-doped carbon framework, with tailorable pore textures upon varying the precursor identities.

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Section: Resultsmentioning

confidence: 99%

Section: Fabrication Of Ordered Mesoporous Materials From Sulfonated ...mentioning

confidence: 99%

Direct synthesis of ordered mesoporous materials from thermoplastic elastomers

et al. 2023

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“…The electrochemical impedance spectroscopy presents that NC‐1000 possesses a smaller charge transfer resistance compared with Pt/C in Figure S8, clearly suggesting that NC‐1000 has an excellent charge transport performance [44–47] . The results indicate that NC‐1000 catalyst can provide more quicker reaction kinetic and support the outstanding inherent ORR activity, which is favorable evidence for rapid charge/mass transformation due to hierarchical pore constitution [48–52] …”

Section: Resultsmentioning

confidence: 90%

“…[44][45][46][47] The results indicate that NC-1000 catalyst can provide more quicker reaction kinetic and support the outstanding inherent ORR activity, which is favorable evidence for rapid charge/mass transformation due to hierarchical pore constitution. [48][49][50][51][52]…”

Section: Resultsmentioning

confidence: 99%

Waste Lithium Ion Battery Evolves into Heteroatom Doped Carbon as Oxygen Reduction Electrocatalyst for Aqueous Al‐Air Batteries

et al. 2022

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Carbon based electrocatalysts prepared by recycling waste power batteries can not only realize the new utilization of waste energy materials, but also obtain cheap and efficient oxygen reduction electrocatalyst for metal-air battery. Based on the cathode carbon of waste LiFePO 4 batteries, nitrogen doped carbon based catalyst NC-1000 is prepared by simple pyrolysis, acid dissolution of LiFePO 4 and high temperature heteroatom doping. The catalyst is characterized by scanning electron microscope, transmission electron microscope and Raman spectrum, and the electrochemical performances of the catalyst and Al-air battery were tested. The results show that carbon based electrocatalyst NC-1000 is rich in structural defects and embedded with trace metal oxides. Compared with commercial 20 wt% Pt/C, it has higher electrocatalytic activity and faster kinetic with a half-wave potential of 0.828 V vs. RHE and the Tafel slope of 70.7 mV dec À 1 . In addition, assembled into Al-air battery, the open circuit potential can reach 1.57 V along with the high power density of 141 mW cm À 2 at 200 mA cm À 2 . The discharge specific capacity at higher current of up to 100 mA cm À 2 is even better than the commercial Pt/C. This study can not only improve the economic value of waste power batteries, but also obtain high-performance ORR electrocatalyst, which will greatly promote the commercial development of Alair batteries.

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“…Fe−Mn synergy decreased the ion diffusion distance, which was beneficial to the charging and discharging process and reduced the reaction energy barrier. These allowed FeMn‐DAC to exhibit a specific capacity of 631 mAh g −1 (equivalent to 86 % at room temperature) and a peak power density of 30 mW cm −2 at −40 °C.Moreover, elements such as P and S are always doped to the substrate to regulate the electronic structure of active sites [93] . Recently, Hu et al.…”

Section: Heteronuclear Dacs With Two Different Metal Atomsmentioning

confidence: 99%

Synergetic Dual‐Atom Catalysts: The Next Boom of Atomic Catalysts

Liu

Rong

Zhang³

2022

ChemSusChem

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Dual‐atom catalysts (DACs) are an important branch of single‐atom catalysts (SACs), in which the former can effectively break the dilemma faced by the traditional SACs. The synergetic effects between bimetallic atoms provide many active sites, promising to improve catalytic performance and even catalyze more complex reactions. This paper reviews the recent research progresses of two kinds of DACs, including homonuclear and heteronuclear DACs, and their applications in oxygen reduction, carbon dioxide reduction, hydrogen evolution, oxygen evolution, Zn‐air batteries, tandem catalytic reactions, and so on. In addition, in order to promote the further development of DACs, the challenges and perspectives of DACs are put forward.

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Single-precursor design and solvent-free nanocasting synthesis of N/S/O-doped ordered mesoporous carbons with trimodal pores for excellent oxygen reduction

Cited by 13 publications

References 75 publications

Direct synthesis of ordered mesoporous materials from thermoplastic elastomers

Direct synthesis of ordered mesoporous materials from thermoplastic elastomers

Waste Lithium Ion Battery Evolves into Heteroatom Doped Carbon as Oxygen Reduction Electrocatalyst for Aqueous Al‐Air Batteries

Synergetic Dual‐Atom Catalysts: The Next Boom of Atomic Catalysts

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