Coupling highly dispersed Sb2S3 nanodots with nitrogen/sulfur dual-doped porous carbon nanosheets for efficient immobilization and catalysis of polysulfides conversion

Yan, Xiujuan; Guo, Wenqian; Li, Wenda; Li, Guoliang; Yue, Zhongjie; Liu, Jing; Peng, Hongrui; Yin, Zhengmao; Zhang, Zhonghua; Mao, Changming; Li, Guicun

doi:10.1016/j.cej.2020.127688

Cited by 30 publications

(9 citation statements)

References 60 publications

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“…The S 2p XPS spectrum can be fitted into oxidized S (167.6 eV and 168.8 eV) and S-C (163.7 eV and 165.0 eV) (Fig. 3c) 51 , indicating the successful doping of S heteroatoms into the carbon lattices. It is noted that the XPS peak for the S-Sb bonding observed in Sb 2 S 3 -NSC is absent in Sb-NSCF (Supplementary Fig.…”

Section: Analysis Of Atomic and Electronic Structurementioning

confidence: 92%

Sb2S3-templated synthesis of sulfur-doped Sb-N-C with hierarchical architecture and high metal loading for H2O2 electrosynthesis

et al. 2023

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Selective two-electron (2e−) oxygen reduction reaction (ORR) offers great opportunities for hydrogen peroxide (H2O2) electrosynthesis and its widespread employment depends on identifying cost-effective catalysts with high activity and selectivity. Main-group metal and nitrogen coordinated carbons (M-N-Cs) are promising but remain largely underexplored due to the low metal-atom density and the lack of understanding in the structure-property correlation. Here, we report using a nanoarchitectured Sb2S3 template to synthesize high-density (10.32 wt%) antimony (Sb) single atoms on nitrogen- and sulfur-codoped carbon nanofibers (Sb-NSCF), which exhibits both high selectivity (97.2%) and mass activity (114.9 A g−1 at 0.65 V) toward the 2e− ORR in alkaline electrolyte. Further, when evaluated with a practical flow cell, Sb-NSCF shows a high production rate of 7.46 mol gcatalyst−1 h−1 with negligible loss in activity and selectivity in a 75-h continuous electrolysis. Density functional theory calculations demonstrate that the coordination configuration and the S dopants synergistically contribute to the enhanced 2e− ORR activity and selectivity of the Sb-N4 moieties.

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Section: Analysis Of Atomic and Electronic Structurementioning

confidence: 92%

Sb2S3-templated synthesis of sulfur-doped Sb-N-C with hierarchical architecture and high metal loading for H2O2 electrosynthesis

et al. 2023

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“…Thus, the TiS 2 @NSC cathode delivers a high reversible capacity of 5.9 mA h cm −2 at 0.1 C after 100 cycles with a low E/S ratio of 8.0 μL mg −1 and a high sulfur loading of 7.7 mg cm −2 (Figure 13d). In addition, Yan et al used highly dispersed Sb 2 S 3 nanodots on N/S-dual-doped porous carbon nanosheets for efficient immobilization and catalysis of LiPS conversion, [105] Guo et al reported Ni 3 S 2 /(N,S)-codoped rGO composite as a matrix of potential sulfur cathodes. [106] Wang and co-workers developed a new type of heterostructure nanosheets composed of cobalt boride (CoB) on N,B-codoped porous carbon (NBC), which was constructed through moltensalt-assisted strategy using ZIF-67-encapsulated ZIF-8 as precursors (Figure 13e).…”

Section: Cooperative Catalytic Effect Built By Catalysts and Codoped ...mentioning

confidence: 99%

Engineering Cooperative Catalysis in Li–S Batteries

Qin,

Wang,

Xiao

et al. 2023

Advanced Energy Materials

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Lithium–sulfur (Li–S) batteries are regarded to be one of the most promising next‐generation batteries owing to the merits of high theoretical capacity and low cost. However, the aprotic S electrochemistry is hampered by the shuttling effect and sluggish conversion of soluble lithium polysulfides (LiPSs). Various electrocatalysts have been designed to optimize the conversion kinetics of the LiPSs. Heteroatom doping or polar catalyst incorporation plays an important role to remedy these shortcomings. Here, the cooperative catalytic effects engendered by heteroatom codoping engineering, catalyst/heteroatom doping composite strategy, and integrating polar‐metal‐based material design are summarized. First, the design principles of the cooperative catalytic effect on the conductive interface are described in detail. Moreover, a systematic investigation of electrocatalytic kinetics characterization techniques that establish a bridge between the cooperative solid–liquid interface and the macroscopic electrochemical performance is highlighted, providing more scientific guidance for the catalyst design. In conclusion, stemming from the current achievements, future directions targeting the high‐energy‐density Li–S batteries for commercialization are proposed.

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“…[29] In addition, Yan and coworkers reported that N, S dual-doped nanosheet derived from leaf-like ZIFÀ 8 can not only provide effective chemisorption sites and rapid electron transportation pathway, but also boost the reversible conversion of trapped polysulfides. [30] Never-theless, the traditional carbon matrix cannot provide enough surface area to expose enough active sites, which causes insufficient adsorption and limited conversion of LiPSs. Therefore, it is important to design hierarchical porous carbon nanosheets based on MÀ NÀ C electrocatalysts to expose abundant active sites for efficient trapping and conversion of LiPSs, thus greatly enhancing the reversible capacity and durability of LiÀ S batteries.…”

Section: Introductionmentioning

confidence: 99%

Realizing Li−S Batteries with Efficient Polysulfide Trapping and Conversion by using a High‐Nitrogen‐Content‐Doped Fe−N−C Porous Carbon Nanosheet‐Modified Separator

Huang

Fang

et al. 2022

ChemistrySelect

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Lithium-sulfur (LiÀ S) batteries with high theoretical energy density have earned much attention in recent years. Nevertheless, the shuttle effect and tardy conversion of polysulfides severely hinder their practical applications. Herein, the highnitrogen-doped FeÀ NÀ C porous carbon nanosheets (denoted as ATÀ FeÀ NÀ CÀ Me) were synthesized and coated on separator as an effective electrocatalyst for LiÀ S batteries. Benefiting from the hierarchical porous carbon structure and rich FeÀ N x catalytic sites, the ATÀ FeÀ NÀ CÀ Me coating layer can effectively suppress the polysulfides shuttling and promote their redox conversion simultaneously. As a result, the LiÀ S batteries with ATÀ FeÀ NÀ CÀ Me modified separators deliver superior rate capability (785.5 mAh g À 1 at 4.0 C) and cycling stability (capacity decay rate of 0.065 % per cycle over 1000 cycles at 1.0 C). This work provides a new strategy to design efficient electrocatalyst with high-surface-area porous structure for high-performance LiÀ S batteries.

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Coupling highly dispersed Sb2S3 nanodots with nitrogen/sulfur dual-doped porous carbon nanosheets for efficient immobilization and catalysis of polysulfides conversion

Cited by 30 publications

References 60 publications

Sb2S3-templated synthesis of sulfur-doped Sb-N-C with hierarchical architecture and high metal loading for H2O2 electrosynthesis

Sb2S3-templated synthesis of sulfur-doped Sb-N-C with hierarchical architecture and high metal loading for H2O2 electrosynthesis

Engineering Cooperative Catalysis in Li–S Batteries

Realizing Li−S Batteries with Efficient Polysulfide Trapping and Conversion by using a High‐Nitrogen‐Content‐Doped Fe−N−C Porous Carbon Nanosheet‐Modified Separator

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