Synergistic effects of B/S co-doped spongy-like hierarchically porous carbon for a high performance zinc-ion hybrid capacitor

Zhang, Xiaopeng; Zhang, Yingge; Qian, Jinjun; Zhang, Yihe; Sun, Li; Wang, Qi

doi:10.1039/d1nr07818f

Cited by 28 publications

(10 citation statements)

References 55 publications

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“…It can be seen from Figure S3 that the IR drop ( IR = 0.02 V) of NS-OPC is considerably larger than those of N-OPC ( IR = 0.08 V) and OPC ( IR = 0.11 V). This shows that S and N doping can improve conductivity, with S doping playing a larger role . Additionally, the discharge time of NS-OPC is the longest, which means that the doping of S and N can tune the electronic structure of OPC, thereby improving the electrical conductivity and specific capacity of the whole electrode material.…”

Section: Resultsmentioning

confidence: 91%

“…This shows that S and N doping can improve conductivity, with S doping playing a larger role. 29 Additionally, the discharge time of NS-OPC is the longest, which means that the doping of S and N can tune the electronic structure of OPC, thereby improving the electrical conductivity and specific capacity of the whole electrode material. NS-OPC shows better performance in the corresponding Ragone plot (Figure 4e) and has an energy density of 71.2 Wh kg −1 at a power density of 105.22 W kg −1 .…”

Section: Resultsmentioning

confidence: 99%

“…However, because activated carbon has an inherently underdeveloped pore structure, its capacitance and power are limited, thereby limiting the diffusion of electrolyte ions at high charge–discharge rates. Recent studies have shown that the introduction of dopants into the C matrix to enhance pseudocapacitance is a valid approach to enhance the electrochemical performance of C cathode materials. − Different heteroatoms have different effects on improving capacitive performance. The incorporation of N and O can lead to enhanced C surface–electrolyte ionic wetting compatibility, effectively imparting pseudocapacitance to the C surface .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synergistic Effect of Nitrogen–Sulfur Codoping on Honeycomb-like Carbon-Based High-Energy-Density Zinc-Ion Hybrid Supercapacitors

Jia

Peng

et al. 2023

ACS Appl. Energy Mater.

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Zn-ion hybrid supercapacitors (ZHSCs) are emerging charge storage devices that inherit many of the advantages of supercapacitors and batteries. However, problems such as unsatisfactory cycling stability and low energy density need to be solved urgently, which can be accomplished by developing cathode materials with excellent properties. Herein, we report the development of performance-enhanced ZHSCs obtained by incorporating N and S heteroatoms into orange peel-based hierarchical porous carbon (NS-OPC) to facilitate Zn 2+ adsorption. The results of ex situ photoelectron spectroscopy and X-ray diffraction demonstrated the presence of −OH and Zn 2+ chemisorbed and Zn 4 SO 4 (OH) 6 •5H 2 O during charging and discharging, respectively. Density functional theory calculations show that double doping can promote the chemisorption/desorption kinetics of Zn 2+ and thus promote the electrochemical charge storage of C materials. Impressively, when used to assemble ZHSCs, the device still has an energy density of 53.9 Wh kg −1 , a high power density of 6063.75 W kg −1 , and an 86.2% capacity retention after 10,000 cycles. This study not only provides a reasonable technique for developing superior C-based electrode materials but also contributes to the understanding of the charge storage process in heteroatom-doped C materials.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synergistic Effect of Nitrogen–Sulfur Codoping on Honeycomb-like Carbon-Based High-Energy-Density Zinc-Ion Hybrid Supercapacitors

Jia

Peng

et al. 2023

ACS Appl. Energy Mater.

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“…Moreover, the nanostructured design and morphological control of nanocarbons boost the effective electrode/ electrolyte contact and reduce the ion transport distance, further exposing more active sites for Zn-ion storage. To this end, various structurally engineered PCs, such as hollow carbon nanospheres from MnO 2 nanoflower templates [9], carbon nanowires from MnO 2 nanowire templates [10], three-dimensional PCs from SiO 2 templates [11], K 2 CO 3 -activated PCs [12], ZnO-activated PCs [2], and a series of alkali-metal-activated PCs [13], have been reported as cathodes for ZHSCs. However, the fabrication processes are generally based on the indirect carbonization of precursors with demands for activations and templates.…”

Section: Introductionmentioning

confidence: 99%

“…The N/B dual-atom-doped carbon nanosheets delivered a specific capacity of 127.7 mA h g −1 at 0.5 A g −1 [6]. In addition, the P/B and B/S codoped PCs have been synergistically designed to improve the ZHSC performance [12,19]. Furthermore, multiple N/P/S-doped carbons exhibited a high capacity of 104.7 mA h g −1 at 0.1 A g −1 [11].…”

Section: Introductionmentioning

confidence: 99%

Molecular engineering toward sustainable development of multiple-doped hierarchical porous carbons for superior zinc ion storage

Liu

Feng

et al. 2022

Sci. China Mater.

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Aqueous Zn-ion hybrid supercapacitors (ZHSCs) hold great potential as next-generation energy storage devices due to their low cost, excellent rate capability, long cycling life, and high safety. Heteroatom-doped hierarchical porous carbons (HD-HPCs) with integrated high specific surface area, multiscale pores, and abundant defects have been regarded as promising cathode materials for ZHSCs. However, the in situ architecture of HD-HPCs with these multiple advantages via a sustainable and controllable method remains an arduous challenge. Herein, a novel molecular engineering strategy was proposed for the in situ construction of N/P/O-doped HD-HPCs via the direct carbonization of multiple-heteroatom-rich hypermolecules. Such a strategy has multiple advantages, including the exclusion of pore-making techniques, activation agents, templates, and complicated and hazard washing processes, demonstrating its green and sustainable properties. The highly active multiple-heteroatom-rich hypermolecular precursors contributed to the formation of abundant micro/mesopores due to the self-abscission of heteroatoms and heteroatom-contiguous carbon atoms at high carbonization temperatures. Consequently, these active structural/compositional features endowed the optimal cathodes with outstanding storage capacities of 139.2 and 88.9 mA h g −1 at 0.5 and 20 A g −1 for aqueous ZHSCs, respectively. They also delivered a superior storage performance in quasi-solid ZHSCs (QS-ZHSCs) with a high specific capacity of 111.5 mA h g −1 at 0.5 A g −1 . Superior energy/power densities and long cycling stability were also achieved for aqueous and QS-ZHSCs. The theoretical calculation confirmed the synergetic effects of multiple-atom doping on enhancing the electronic conductivity and reducing the energy barrier between Zn ions and carbon, which promote the Zn-ion adsorption capability. These findings shed fresh light on the straightforward manufacture of superior HD-HPCs for electrochemical energy storage.

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Coupling Uniform Pore Size And Multi‑Chemisorption Sites: Hierarchically Ordered Porous Carbon For Ultra‐Fast And Large Zinc Ion Storage

Peng

Bannov

et al. 2023

Adv Funct Materials

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Constructing hierarchically ordered macro/meso−microporous structures of carbonaceous cathode with matchable pore size and adequate active sites is significant toward large Zn2+ storage, but remains a formidable challenge. Herein, a new perspective is reported for synthesizing phosphorus and nitrogen dual‐doped hierarchical ordered porous carbon (PN‐HOPC) by eliminating the micropore confinement effect and synchronously introducing multi‐chemisorption sites. The interconnected macropore can effectively facilitate long‐distance mass transfer, and meso−microporous wall can promote accessibility of active sites. Density functional theory (DFT) calculations identify that the P and N co‐doping markedly contributes to the reversible adsorption/desorption of zinc ions and protons. Consequently, the optimized PN‐HOPC exhibits outstanding Zn2+ storage capabilities in terms of high capacity (211.9 mAh g−1), superb energy density (169.5 Wh kg−1), and ultralong lifespan (99.3% retention after 60 000 cycles). Systematic ex situ measurements integrating with in situ Raman spectroscopy and electrochemical quartz crystal microbalance (EQCM) techniques elucidate that the superior electrochemical capability is ascribed to the synergistic effect of the Zn2+, H+, and SO42− co‐adsorption mechanism, as well as invertible chemical adsorption. This study not only provides new insights to design advanced carbon materials toward practical applications but also sheds lights on a deeper understanding of charge storage mechanism for zinc‐ion capacitors (ZICs).

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Synergistic effects of B/S co-doped spongy-like hierarchically porous carbon for a high performance zinc-ion hybrid capacitor

Abstract: Zinc-ion hybrid capacitors (ZIHCs) are regarded as a potential candidate for large-scale energy storage devices. However, the inadequate cathode and the inferior wettability between the electrode and electrolyte hinder the...

Cited by 28 publications

References 55 publications

Synergistic Effect of Nitrogen–Sulfur Codoping on Honeycomb-like Carbon-Based High-Energy-Density Zinc-Ion Hybrid Supercapacitors

Synergistic Effect of Nitrogen–Sulfur Codoping on Honeycomb-like Carbon-Based High-Energy-Density Zinc-Ion Hybrid Supercapacitors

Molecular engineering toward sustainable development of multiple-doped hierarchical porous carbons for superior zinc ion storage

Coupling Uniform Pore Size And Multi‑Chemisorption Sites: Hierarchically Ordered Porous Carbon For Ultra‐Fast And Large Zinc Ion Storage

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