JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Fangbao Fu,Dongjie Yang,Bowei Zhao,Yukang Fan,Weifeng Liu,Hongming Lou,Xueqing Qiu
Heteroatom-doped porous carbon materials show promise for use as supercapacitor electrodes, but the tradeoff between surface area and the heteroatom dopant levels limits the supercapacitive performance. Here, we modulated the pore structure and surface dopants of N, S co-doped hierarchical porous lignin-derived carbon (NS-HPLC-K) via self-assembly assisted template-coupled activation. The ingenious assembly of lignin micelles and sulfomethylated melamine into a magnesium carbonate basic template greatly promoted the KOH activation process, which endowed the NS-HPLC-K with uniform distributions of activated N/S dopants and highly accessible nanosized pores. The optimized NS-HPLC-K exhibited a three-dimensional hierarchically porous architecture composed of wrinkled nanosheets and a high specific surface area of 2538.3 ± 9.5 m 2 /g with a rational N content of 3.19 ± 0.01 at.%, which boosted the electrical double-layer capacitance and pseudocapacitance. Consequently, the NS-HPLC-K supercapacitor electrode delivered a superior gravimetric capacitance of 393 F/g at 0.5 A/g. Furthermore, the assembled coin-type supercapacitor showed good energy-power characteristics and cycling stability. This work provides a novel idea for designing eco-friendly porous carbons for use in advanced supercapacitors.
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Huijuan Bai,Hanqing Peng,Yan Xiang,Jin Zhang,Haining Wang,Shanfu Lu,Lin Zhuang
The properties of high temperature polymer electrolyte membranes (HT-PEMs) are determined directly by the polymer matrix with phosphoric acid (PA) doping. Here, new polymer materials based on poly (arylene piperidine)s (PAPs) are prepared by one-step polymerization as PA absorbing matrix for HT-PEM fuel cells (HT-PEMFCs) application. The PAPs show excellent thermal stability and high glass transition temperature . Among PAPs, PA doped poly (N-methyl-piperidine- co - p -terphenyl) (PPT/PA) shows a high proton conductivity of 96.0 mS cm −1 at 180 °C without humidification and an excellent tensile strength of 12 MPa, which is much better than that of PA doped commercial poly [2,2’-( p -oxydiphenylene)-5,5′-benzimidazole] (OPBI/PA). The enhancement on conductivity of PPT/PA is attributed to the formation of micro-phase separation. A single cell based on PPT/PA membrane presents outstanding performance with a maximum power density of 1220.2 mW cm −2 with H 2 /O 2 feeding under 0.15 MPa backpressure in cathode at 180 °C, which is 1.85 times of that with OPBI/PA membrane (660.8 mW cm −2 ). Furthermore, a H 2 /air single cell with PPT/PA shows excellent stability at a constant current density of 120 mAcm −2 and 150 °C for 1600 h. This work indicates PAPs (especially, PPT) are a promising PA doping polymer matrix for high temperature polymer electrolyte membrane fuel cells application .
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DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 5
·2004-2012
·
IF 8.307
Xiaopeng Zhang,Yingge Zhang,Jialong Qian,Yihe Zhang,Li Sun,Qi Wang
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 construction of high-performance ZIHCs. Herein, boron (B) and sulfur (S) co-doped spongy-like hierarchically porous carbon (B2S3C) is first proposed as a cathode material for ZIHCs. Here, B doping is favorable for improving the wettability, while S doping contributes to enhancing the electrical properties. In addition, the density functional theory (DFT) results uncover that B and S atoms contribute to reducing the energy barrier between Zn2+ and the cathode, leading to boosted chemical adsorption ability of Zn2+ on the cathode. As a result, the assembled ZIHC based on B2S3C exhibits a high specific capacity of 182.6 mA h g−1 at 0.1 A g−1, an excellent capacity retention of 96.2% after 10 000 cycles and a remarkable energy density of 292.2 W h kg−1 at a power density of 62.2 W kg−1, superior to the previously reported ZIHCs. Due to the flexibility of the assembled electrodes, the solid-state ZIHC can sustain various deformations. This work paves a feasible path for the development of cost-effective and high-performance porous carbon materials.
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DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Ranran Bu,Ying Deng,Yonglong Wang,Yu Zhao,Qiqi Shi,Qi Zhang,Zhenyu Xiao,Yanyan Li,Wei Sun,Lei Wang
Over the past decades, great achievements of supercapacitor positive electrode materials have been developed, but the exploration of negative electrode materials is obviously lagging and mainly focuses on low-capacity electrochemical double-layer capacitor-based carbon materials (≤300 F g–1, commonly), which limits the overall capacitance of supercapacitor devices for further application. In this work, using the gifted MIL-88A@GO as a precursor, we fabricate a FeS2/Fe2O3 heterostructure-coupled S-functionalized 3D rGO network (FeS2/Fe2O3@S-rGO) by a diffusion-controlled etching and vulcanizing process. The formation of heterogeneous interfaces and the strongly coupled interaction between the FeS2/Fe2O3 heterostructure and 3D S-rGO can provide high surface area for more electrochemical active sites, a rich pathway for the rapid transmission of the electron and electrolyte, and effectively alleviate the volume variation in the charging and discharging process. Therefore, the as-obtained FeS2/Fe2O3@S-rGO presents an outstanding capacity of 219.4 mA h g–1 (790 F g–1) at a current density of 2 A g–1, which is higher than that of most reported Fe-based negative materials. Then, a positive electrode of hierarchical 2D/3D Ni3S2/Co3S4 (NCS) is prepared and further fabricated with a FeS2/Fe2O3@S-rGO electrode to obtain a hybrid supercapacitor device (NCS//FeS2/Fe2O3@S-rGO), which delivers an outstanding overall capacitance value of 114.2 mA h g–1 (274 F g–1) at 1 A g–1 and provides a remarkable energy density of 85.63 Wh kg–1 corresponding to a power density of 0.75 kW kg–1.
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DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Shenjie Li,Xiaoyu Gong,Zhiqiang Li,Minghui Yu,Yanyan Chen,Hao Yu,Shuang Wang,Hongyu Shao,Minghao Dou,Yuye Cheng
A novel interfacial reaction nucleation mechanism for the preparation of water-soluble Ag–In–S quantum dots (AIS QDs) was proposed in which interfacial acid regulates the concentration of hydroxide ions outside the complex and sulfur sources attack cations at the interface of the complex, covalent bonds between cations and sulfur sources are formed at the interface of the complex, and the nucleation and growth of crystals is finished at room temperature. By bypassing the heating process normally necessary for crystal nucleation and growth, AIS QDs can be produced on a large scale under simple, mild conditions. At the same time, the characteristics of this mechanism enable AIS QDs to be directly synthesized in an organic pollutant solution. This study represents a significant advance in the mechanism of crystal synthesis and contributes to the photocatalytic decomposition of organic pollutants from theory to practice.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Shan Jiang,Jing Cao,Minna Guo,Dongdong Cao,Xuemei Jia,Haili Lin,Shifu Chen
Elemental red phosphorus (RP) has an ultra-low activity of splitting water for H 2 and O 2 evolution. In this study, RP was decorated by trace amount of WO 3 to greatly enhance the photocarriers separation and photocatalytic activity for overall water splitting under visible light. The 2.5% WO 3 /RP composite achieved the highest activity to produce H 2 and O 2 , and the activity was 7.0 times that of pure RP under visible light (λ ≥ 420 nm). The significantly increased photocarriers separation of WO 3 /RP was ensured by transient photocurrent, electrochemical impendence, photoluminescence, and time-resolved photoluminescence characterizations. More importantly, WO 3 /RP maintained high stability when it was persistently used for 20 cycles. Based on the reactive oxygen species ( O 2 − and OH) detected during the photocatalytic process, an S-scheme mechanism was proposed for WO 3 /RP composites to efficiently separate the photocarriers. This work provides a notion for improving the overall water splitting activity of RP via an S-scheme photocarriers separation mode.
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DOI
高影响因子
Advanced Industrial and Engineering Polymer Research
·
2020
·
IF 0
Lishuai Zong,Chuang Li,Yuan Zu,Jinyan Wang,Xigao Jian
Modern microelectronics devices urgently request low dielectric constant materials with commendable mechanical properties. Novel fluorinated poly(aryl ether)s (FPPEs) were prepared by traditional polycondensation of 4-(4-Hydroxylphenyl)(2H)-phthalazin-1-one (DHPZ), Bisphenol AF (BAF) and Decafluorobiphenyl (DFB) to study bulky phthalazinone effects on mechanical and dielectric behavior of polymers. After the introduction of phthalazinone moieties, FPPEs showed excellent solubility to readily solve in many organic solvents like NMP, DMAc, CHCl 3 , and THF. Simultaneously, they exhibited relatively high glass transition temperatures ( T g s) from 180 °C to 294 °C, increasing with the content of phthalazinone groups. The FPPEs still possessed excellent thermal stability with decomposition temperature up to 514 °C and char yield at 800 °C as high as 56% under nitrogen atmosphere. FPPE films showed good mechanical strength with tensile stress higher than 68 MPa and modulus surpassing 10.8 MPa, also increasing with phthalazinone concentration. The dielectric property of FPPEs was investigated with impedance analyzer. FPPE8020 and FPPE 6040 showed dielectric constant from 3.10 to 3.30 and dielectric loss of 0.005–0.008 under a large frequency range of 0.02–60 GHz. The phthalazinone moieties mainly contributed to the decrease of dielectric constant. The results evidently suggest FPPEs as commendable candidate for those high-tech electronic applications.
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DOI
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Jiaqi Wang,Guoxiang Wang,Li Cui,Dazhi Wang,Shiping Gao,Suhua Liu,Sa Liu,Hongfeng Xu
Bimetallic metal-organic framework (MOF) has attracted great interest as an electrode for supercapacitors . Most metal sources are limited to valences of + 2 and + 3. We select metal sources of Co (II) and Mo (VI) and demonstrated a crystalline bimetallic MOF precursor prepared by using a facile chemical synthesis. The one-step solvothermal strategy is assisted by thioacetamide (TAA) for the self-assembly Co-Mo-S nanosheet arrays (Co-Mo-S NSAs). TAA-induced etching is essential to regulate the assembly of amorphous structures. Otherwise, only a single-structure crystalline Co-Mo-S could be obtained. The Co-Mo-S NSAs show a large specific capacitance of 1805.28 F g −1 at a current density of 0.5 A g −1 . A Co-Mo-S NSAs//AC battery−supercapacitor hybrid (BSH) make with activated carbon as the negative electrode and Co-Mo-S NSAs as the positive electrode. At a current density of 0.5 A g −1 , the BSH shows a high energy density of 169.73 Wh kg −1 and a power density of 371.44 W kg −1 . After 50,000 cycles, the capacitance retention rate is as high as 94.44%, showing good reversibility and cycle life. This work provides an effective strategy for manufacturing bimetallic MOF-based metal sulfide heterostructure electrode materials for practical energy storage and conversion .
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DOI
高影响因子
Journal of the American Chemical Society
·
2019
·
IF 14.695
Ruijin Sun,Shifeng Jin,Lin Gu,Qinghua Zhang,Qingzhen Huang,Tianping Ying,YiRan Peng,Jun Deng,Zhiping Yin,Xiaolong Chen
The pairing of ions of opposite charge is a central principle of chemistry. Even though the ability to intercalate anions is desirable for many applications, it remains a key challenge for numerous host materials with their outmost layers beingn anions. In this work, we introduce a hydrothermal ion-exchange synthesis to intercalate oxidative S and Se anions between the Se layers of FeSe, which leads to single crystals of novel compounds (Se/S)x(NH3)yFe2Se2. In particular, the unusual anion–anion bonding between the intercalated S (or Se) and Se layers exhibits strong ionic characteristics. The charge transfer through the Se layer to S (or Se) intercalants is further confirmed by the elevated oxidation state of Fe ions and the dominant hole carriers in the intercalated compounds. By intercalating S, for the first time superconductivity emerged in hole-doped iron chalcogenides. The generality of this chemical approach was further demonstrated with layered FeS and NiSe. Our findings thus open an avenue to exploring diverse aspects of anionic intercalation in similar materials.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Cong Liu,Fenyun Yi,Dong Shu,Weixin Chen,Xiaoping Zhou,Zhenhua Zhu,Ronghua Zeng,Aimei Gao,Chun He,Xia Li
Three-dimensional N/S co-doped succulent-like hierarchical carbon (3D NS-SHC) is synthesized by carbonization of a supramolecular cluster. In this supramolecular process, potassium citrate can act as a reliable carbon source, while the thiourea as a N/S source and then, two molecules gradually tend to generate a giant “all-in-one” precursor via hydrogen bonding verified by Independent Gradient Model (IGM) calculation. TEM and SEM images show the N/S co-doped carbon holds a novel 3D succulent-like hierarchical structure. For NS-SHC-8:8 sample, element mapping images display the uniform N/S atoms distribution. These distinct features can be related to the supramolecular polymerization which promotes in-situ N/S co-doping homogenously and conduces to build 3D structure. Typically, NS-SHC-8:8 electrode exhibits prominent specific capacitance (258.5 F g −1 at 0.5 A g −1 ) and excellent cycle stability (94.4% after 20000 cycles) in three-electrode system. Furthermore, an assembled quasi-solid state symmetric supercapacitor delivers good energy density (10.2 Wh kg −1 at 250 W kg −1 ) and steady cycle endurance (85.1% after 10000 cycles). These eximious behaviors of NS-SHC-8:8 are mainly attributed to (1) the uniform N/S atoms distribution and their synergistic effect, which brings extra Faradaic reaction to higher specific capacitance, (2) the charming 3D succulent-like hierarchical structure, which serves as a multifunctional reservoir that can accommodate the ion/charge and facilitate their migration to further promote the electrochemical performance. Above mentions suggest that this uniformly heteroatom-modified carbon material produced by supramolecular technique is promising for high-performance energy storage devices.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ge Chang,Yisu Hao,Cong Huang,Yujie Yang,Yang Qian,Dejian Zhu,Zhixiao Liu,Zheng Liu,Qunli Tang,Xiaohua Chen,Aiping Hu
Aqueous Zn–S batteries (AZSBs) have garnered increasing attention in the energy storage field owing to their high capacity, energy density , and cost effectiveness. Nevertheless, sulfur (S) cathodes face challenges, primarily stemming from sluggish reaction kinetics and the formation of an irreversible byproduct (SO 4 2− ) during the charge, hindering the progress of AZSBs. Herein, Te–S bonds within S-based cathodes were introduced to enhance electron and ion transport and facilitate the conversion reaction from zinc sulfide (ZnS) to S. This was achieved by constructing heteroatomic TeS-x@Ketjen black composite cathodes (HM-TeS-x@KB, where x = 36, 9, and 4). The HM-TeS-9@KB electrode exhibits long-term cycling stability, maintaining a capacity decay rate of 0.1 % per cycle over 450 cycles at a current density of 10 A g −1 . Crucially, through a combination of experimental data analysis and theoretical calculations, the impact mechanism of Te on the charge and discharge of S active materials within the HM-TeS-9@KB cathode in AZSBs was investigated. The presence of Te–S bonds boost the intrinsic conductivity and wettability of the HM-TeS-9@KB cathode. Furthermore, during the charge, the interaction of preferentially oxidized Te with S atoms within ZnS promotes the oxidation reaction from ZnS to S and suppresses the irreversible side reaction between ZnS and H 2 O. These findings indicate that the heteroatomization of chalcogen S molecules represents a promising approach for enhancing the electrochemical performance of S cathodes in AZSBs.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
An-Min Fei,Liang Wu,Mei-Tong Wei,Wen-Hua Shi,Zhi Qian,Zong-Bu Qin,Hemdan S.H. Mohamed,Zhi-Yi Hu,Jing Liu,Yu Li,Bao-Lian Su
The silicon (Si) anode boasts an exceptionally high theoretical capacity (4200 mAh g −1 ), making it an attractive candidate for advanced lithium-ion batteries (LIBs). However, its practical application is limited by poor electrical conductivity and disastrous volume expansion. In this work, we have successfully synthesized a yolk-shell composite material (Si@H-CoNPSC) consisting of N, P, S co-doped carbon encapsulated silicon nanoparticles (SiNPs) via a self-template method based on the Kirkendall effect. The Si@H-CoNPSC anode exhibits excellent electrochemical performance, after 300 cycles, keeping a specific capacity of 872.8 mAh g −1 at 1 A g −1 . Additionally, after 150 cycles, it retains 1305.8 mAh g −1 at 0.5 A g −1 , with a capacity retention of 91.1 %. These outstanding results are mainly due to the co-doped hollow carbon shell, which improves the anode’s conductivity and reduces volume changes during cycling. This study provides new insights for the designing of silicon-carbon anode structures for high-performance LIBs.
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高影响因子
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