APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Ning Liu,Xiangyi Zhang,Enhui He,Wenjun Zhou,Liangmin Yu,Xuefeng Yan
Transition metal sulfides with high theoretical specific capacitance are widely used as electrode materials for supercapacitors, but their poor cycling stability and energy density prevent them from meeting the needs of practical applications. To solve this problem, it is urgent to design an electrode material with excellent electrochemical performance. Here, polyacrylonitrile polymer layer-modified Co 3 S 4 microspheres are anchored on a Ni foam substrate and then subjected to high-temperature carbonization to prepare a Carbon@Co 3 S 4 /Ni 3 S 2 /NF core–shell composite electrode. Its areal specific capacitance reached 1716 mF cm −2 at a current density of 1 mA cm −2 and 1128.9 mF cm −2 at 20 mA cm −2 . Compared with the Co 3 S 4 /Ni 3 S 2 /NF electrode, its cycling stability is significantly improved, and the capacitance retention rate reaches 109% after 10,000 cycles. In addition, the assembled symmetrical supercapacitor achieves a higher energy density of 11.15 mWh cm −3 at a power density of 600 mW cm −3 and excellent cycling performance (approximately 90.3% capacitance retention over 5000 cycles). More importantly, this study illustrates a new method for improving the cycling stability and specific capacitance of transition metal sulfides, which provides the possibility of further practical application of the materials.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Zheheng Jiang,Wei Liu,Muzammil Hussain,Hao Sun,Yun Kuang,Yaping Li,Wen Liu,Daojin Zhou,Xiaoming Sun
Developing efficient and stable oxygen evolution reaction (OER) electrocatalysts is vital to advancing the expansion of water-splitting for green hydrogen production. However, the high overpotential and unsatisfactory stability of electrocatalysts have been significant obstacles. Herein, hydrothermal and cathodic electrodeposition are utilized to prepare an atomically dispersed Ir-doped Co3S4 electrocatalyst (Ir–Co3S4) as precatalysts, exhibiting a record-low overpotential (158 mV at 10 mA cm–2) and ultrahigh stability (1000 h at 100 mA cm–2) in 1 M KOH after activation, making it one of the best-performing OER anodes. In situ characterizations and theoretical calculations demonstrated that Ir–Co3S4 undergoes a precatalytic evolution of sulfur–oxygen exchange to form a dual-anionic coordination environment, which is conducive to enhancing the activity of CoOOH formation at operating voltages. Ir–Co dual active sites in Ir–Co3S4/CoOxHy could trigger the OER via a kinetically advantageous oxide coupling mechanism (OCM). Furthermore, in conjunction with the Raman findings, the molecular dynamics simulations demonstrate that the SO42– generated by the electrode exerts a role in repelling Cl– through dense coverage and electrostatic repulsion, demonstrating the potential being used in saline-alkaline water splitting. This work proposes combining single noble metal atoms with economically efficient metal sulfide catalysts and presents a rational design approach for hydrogen production electrocatalysts.
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DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Guangjun Liu,Fei Zhou,Keling Yan,Changfu Zhuang,Ying Wang,Ce Wang,Di Tian
Recently, MOF derived metal sulfides have drawn much attentions in supercapacitor filed, but its electrochemical performance is limited by their dispersion and stability. Herein, an in situ growth process was designed to fabricate Co 3 S 4 /Ni 3 S 4 on electrospun carbon nanofibers modified by ZIF-67, which offered robust structural stability , high redox activities, and enhanced the electron/ion diffusion kinetics. These merits lead to the specific capacitance of 617.78 F g −1 (specific capacity of 278.00 C g −1 ) at 0.5 A g −1 , good rate performance, as well as long cycling durability for CNF@CoNi(1:4)S in three electrode system . Its charge storage mechanism involved in a combined process of surface and diffusion contribution. In addition, an asymmetric supercapacitor (CNF@CoNi(1:4)S//AC) was constructed with the maximum energy density of 40.54 Wh kg −1 (1 A g −1 ) and the maximum power density of 6788.00 W kg −1 . This device also showed an outstanding cyclic performance (its specific capacitance could maintain the initial 115.10 % after 5000 cycles), and provided enough energy for the emission of LED. This work opens an avenue for designing MOF based or metal sulfides based functional materials .
研究领域:
材料科学
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电化学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 43
·21350-21359
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IF 9.931
Miaomiao Liang,Mingshu Zhao,Haiyang Wang,Qingyang Zheng,Xiaoping Song
In this article, a novel crystalline/amorphous Co3S4 core–shell heterostructure supported on nickel foam is fabricated through a facile method. Due to the unique structure of the crystalline Co3S4 core that provides stable mechanical support and surface-active sites and the amorphous shell that facilitates diffusion and reaction of electrolyte ions, the obtained crystalline/amorphous Co3S4 electrode shows a superior pseudocapacitive performance of 2.65 F cm−2 (2038.5 F g−1) at a current density of 5 mA cm−2 and even 1.81 F cm−2 (1392.3 F g−1) at 50 mA cm−2. In addition, the Co3S4//AC exhibits a relatively high energy density of 54.78 W h kg−1 at a power density of 400.02 W kg−1 and excellent cycling performance (about 94.8% capacitance retention over 32 500 cycles). The kinetic analysis reveals a diffusion controlled faradaic characteristic of Co3S4 (73.21% diffusion-controlled contribution). Moreover, the fabrication process presented in this work is facile, cost-effective, and environmentally benign, offering a feasible solution for fabricating next-generation high-performance energy storage devices.
研究领域:
材料科学
·
能源存储与转换
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Donghong Duan,Kaixin Chen,Chongzhi Xing,Xiaoqiang Wang,Xianxian Zhou,Shibin Liu
The development of lithium-sulfur (Li-S) batteries necessitates the creation of efficient cathode materials . By simultaneous phosphating and sulfurating, a spindle-shaped CoP-Co 3 S 4 heterostructure sulfur cathode substrate made up of numerous tiny needle-like structures is created. The benefits of CoP with outstanding conductivity and Co 3 S 4 with great adsorption capacity are combined in the as-prepared CoP-Co 3 S 4 heterostructures, which achieve efficient capture-diffusion-transformation of polysulfides at the interface. The CoP accelerates the redox kinetics toward polysulfide conversion, and the Co 3 S 4 has a considerable adsorption power toward polysulfides. The quick nucleation of polysulfide and increased capture effectiveness are aided by the quick transfer of polysulfide from the Co 3 S 4 surface to the CoP surface. As a result, the CoP-Co 3 S 4 @S cathode battery with a 1.1 mg cm −2 sulfur load achieves a high initial capacity of 1516.9 mAh g −1 at 0.2 C and maintains that capacity after 100 cycles at 750.1 mAh g −1 . After 300 cycles, even the 565.1 mAh g −1 specific capacity can be attained at 1 C.
研究领域:
材料科学
·
电化学
✓ 已验证
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DOI
高影响因子
Small
·
2019
·Vol. 15
·期 46
·1903873
·
IF 10.856
Ya-Qian Wu,Hui-Xian Yang,Yu Yang,Hao Pu,Wen-Jie Meng,Rui-Ze Gao,Dong-Lin Zhao
SnS 2 has been widely studied as an anode material for sodium-ion batteries (SIBs) based on the high theoretical capacity and layered structure. Unfortunately, rapid capacity decay associated with volume variation during cycling limits practical application. Herein, SnS 2 /Co 3 S 4 hollow nanocubes anchored on S-doped graphene are synthesized for the first time via coprecipitation and hydrothermal methods. When applied as the anode for SIBs, the sample delivers a distinguished charge specific capacity of 1141.8 mAh g −1 and there is no significant capacity decay (0.1 A g −1 for 50 cycles). When the rate is increased to 0.5 A g −1 , it presents 845.7 mAh g −1 after cycling 100 times. Furthermore, the composite also exhibits an ultrafast sodium storage capability where 392.9 mAh g −1 can be obtained at 10 A g −1 and the charging time is less than 3 min. The outstanding electrochemical properties can be ascribed to the enhancement of conductivity for the addition of S-doped graphene and the existence of p–n junctions in the SnS 2 /Co 3 S 4 heterostructure. Moreover, the presence of mesopores between nanosheets can alleviate volume expansion during cycling as well as being beneficial for the migration of Na + .
研究领域:
材料科学
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电化学
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纳米科技
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能源存储
·
无机化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Qi Xue,Pengjing Yin,Runmiao Chen,Juan Bai,Haoqi Yang,Yuanzhen Zhou
A self-supported Mo-doped Co 3 S 4 /Ni 3 S 2 heterostructure was constructed. • HER and OER overpotentials reach 45.6 and 51.5 mV at 10 mA cm −2 . • Operando Raman reveals earlier formation of a NiOOH-dominated active phase. • Mo suppresses excess OH ⁎ coverage and accelerates oxygen-intermediate turnover. • A symmetric electrolyzer delivers 10 mA cm −2 at a cell voltage of 1.43 V. Dynamic reconstruction of transition-metal sulfides into active oxyhydroxides is critical to the oxygen evolution reaction (OER), yet promoting this transformation at a low anodic potential while avoiding excessive accumulation of oxygenated intermediates remains challenging. Herein, density functional theory (DFT) calculations were used to reveal the electronic effect of Mo incorporation on the Co 3 S 4 /Ni 3 S 2 heterointerface, showing a downward shift of the Ni d -band center and reduced electron localization around adjacent Ni and Co sites. Based on this insight, a self-supported Mo-doped Co 3 S 4 /Ni 3 S 2 heterostructure was synthesized on nickel foam (Mo-Co 3 S 4 /Ni 3 S 2 ). The optimized Mo 0.03 -Co 3 S 4 /Ni 3 S 2 requires overpotentials of only 51.5 mV and 45.6 mV to deliver 10 mA cm −2 for OER and HER. A two-electrode electrolyzer using Mo-Co 3 S 4 /Ni 3 S 2 as both electrodes reaches 10 mA cm −2 at only 1.43 V. Methanol-probe measurements indicate reduced OH ⁎ accumulation after Mo incorporation, while in-situ Raman spectroscopy identifies the reconstructed NiOOH layer as the OER-active phase and reveals its formation at a lower anodic potential. Further calculations show that Mo brings hydrogen adsorption closer to thermoneutral and lowers the thermodynamic limitation of OER by regulating oxygenated-intermediate adsorption. This work provides a general strategy for regulating dynamic catalyst reconstruction and interfacial reaction processes, which may advance the development of efficient electrocatalysts for sustainable hydrogen production. Download: Download high-res image (132KB) Download: Download full-size image
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DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Hang Su,Shuo Huang,Dewen Su,Carlos Garcia Nuñez,Hadi Heidari,Haopeng Zhang,Jingming Lan,Xin Gao,Hongyan Yue
It is highly important to efficiently recognize and detect chiral molecules in drug development and life sciences. In this paper, an electrochemical chiral sensor for the detection of L-tryptophan (l-Trp), based on l-cysteine (l-Cys)@island-like Co3S4 on Co3O4 nanosheet arrays heterostructure/carbon paper (l-Cys@Co3S4–Co3O4/CP), is presented. Co-MOF triangular nanosheets with a thickness of ∼200 nm are first grown on the CP. After calcination and partial sulfidation, the Co3S4–Co3O4 heterostructure forms. Finally, l-Cys, as a chiral selector, is uniformly decorated on the heterostructure. The island-like heterostructure exhibits superior electrical conductivity and could potentially provide active sites for the absorption of l-Cys. The l-Cys@Co3S4–Co3O4/CP electrode is utilized for the electrochemical recognition and detection of L-tryptophan (l-Trp) via a differential pulse voltammetry (DPV) method. It demonstrates a recognition efficiency of 1.50 and shows high sensitivity (0.33 μA·μM–1) and a low detection limit (0.021 μM) for l-Trp within the concentration range of 0.06–2 mM. The electrode has good anti-interference ability, reproducibility, and repeatability. Moreover, it exhibits good detection performance of l-Trp in biological samples, with recovery ranging from 96% to 105%, demonstrating excellent potential in clinical applications.
研究领域:
分析化学
·
生物医学工程
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材料科学
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产品关联
DOI
高影响因子
Materials
·
2026
·Vol. 19
·期 4
·692
·
IF 3.7
Haopo Li,Ting Feng,Fang Wang,Yuhe Wang,Hao Song,Chengxin Zhang,Fengzhang Ren
Heterointerface engineering, especially the construction of heterointerfaces based on two highly active components, is an effective strategy to enhance the sodium storage capacity and accelerate the reaction kinetics of transition metal chalcogenide anodes. Herein, a series of SA-CoFe-S composites composed of two highly active metal sulfides, Co3S4and Fe7S8, were fabricated through in situ chelation effects coupled with a one-step sulfurization strategy. The optimized SA-CoFe(1:4)-S is composed of fine nanoparticles encapsulated by uniformly distributed S-doped carbon. This unique carbon confinement effect and nano-sized active particles can alleviate volume expansion, shorten the ion diffusion distance, and accelerate electron transfer. In addition, the strong electric-field effect and rich heterointerfaces generated by the heterostructure provide more active sites for sodium storage and accelerate the sodium storage kinetics. The relevant theoretical calculation outcomes further confirm that the heterointerfaces formed between Co3S4and Fe7S8can enhance the adsorption energy toward sodium ions and boost the electrical conductivity of the composite material. As an anode material for sodium-ion batteries, the initial discharge/charge capacities were 723/1010 mAh·g−1, exhibited at 1 A·g−1, and the coulombic efficiency (CE) corresponding to this current density was measured to be 71.6%. Even after 800 cycles, the reversible discharge specific capacity of the electrode can still reach 806 mAh·g−1at 1 A·g−1. Additionally, at an elevated current density of 3 A·g−1, the electrode sustains stable cycling over 500 cycles, with its discharge capacity kept at 258 mAh·g−1after the long-term cycling test.
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Muhammad Rauf,Liulian Pi,Jingwen Wang,Hongwei Mi,Qianling Zhang,Peixin Zhang,Xiangzhong Ren,Yongliang Li
Transition metals sulfide-based nanomaterials have recently received significant attention as a promising cathode electrode for the oxygen evolution reaction (OER) due to their easily tunable electronic, chemical, and physical properties. However, the poor electrical conductivity of metal-sulfide materials impedes their practical application in energy devices. Herein, firstly nano-sized crystals of cobalt-based zeolitic-imidazolate framework (Co-ZIF) arrays were fabricated on nickel-form (NF) as the sacrificial template by a facile solution method to enhance the electrical conductivity of the electrocatalyst . Then, the Co 3 S 4 /NiS@NF heterostructured arrays were synthesized by a simple hydrothermal route. The Co-ZIFs derived Co 3 S 4 nanosheets are grown successfully on NiS nanorods during the hydrothermal sulfurization process. The bimetallic sulfide-based Co 3 S 4 /NiS@NF-12 electrocatalyst demonstrated a very low overpotential of 119 mV at 10 mA cm −2 for OER, which is much lower than that of mono-metal sulfide NiS@NF (201 mV) and ruthenium-oxide (RuO 2 ) on NF (440 mV) electrocatalysts. Furthermore, the Co 3 S 4 /NiS@NF-12 electrocatalyst showed high stability during cyclic voltammetry and chronoamperometry measurements. This research work offers an effective strategy for fabricating high-performance non-precious OER electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Zheng-Xue Wu,Le-Qing Fan,Jiao-Juan Chen,Xu-Geng Deng,Tao Tang,Yun-Fang Huang,Ji-Huai Wu
Transition metal sulfides (TMSs) as pseudocapacitive materials have high specific capacitance. But the main concern of the volume variation as a result of insertion/desertion of electrolyte ions into/from TMSs during the electrochemical processes leads to the terrible cycling stability of supercapacitor devices. To solve this concern, this work reports a fireworks-like amorphous Co 3 S 4 prepared via a facile two-step hydrothermal method containing the synthesis of precursor Co 2 (CO 3 )(OH) 2 in the first step, which is converted into Co 3 S 4 in the second step via an anion-exchange reaction with S 2− . The influence of anion-exchange temperature on the structure and electrochemical performances of as-prepared materials is discussed. It is observed that the structure of materials changes from disorder to order with the increment in anion-exchange temperature, while the fireworks-like morphology is kept almost unchanged. When the anion-exchange temperature is 100 °C, the resultant Co 3 S 4 –100 is in an amorphous structure. A remarkable specific capacitance (2520.2 F g −1 @1 A g −1 ) is delivered by Co 3 S 4 -100, surpassing that of crystalline Co 3 S 4 -220 (1675.4 F g −1 ), which are attributable to the former's larger specific surface area together with the amorphous structure nature. Apart from eminent energy density (52.4 Wh kg −1@1026.3 W kg −1 power density), the asymmetric supercapacitor (Co 3 S 4 –100 positive electrode and activated carbon negative electrode) shows exceptionally good cycling stability (retaining 98.4% of the initial capacitance after 10,000 cycles).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Shanshan Wang,Yi Liu,Xiaolong Deng,Jiafeng Cao,Yufeng Han,Jinzhao Huang,Yibing Li
In this study, unique Co 3 S 4 /Fe 3 S 4 heterostructures (denoted as CoFe-HM-T) were synthesized from CoFe layered double hydroxides (LDHs) by a two-step hydrothermal process (hydrazine monohydrate and thiourea treatment). The effect of Co 3 S 4 /Fe 3 S 4 heterostructures on the electrocatalytic water splitting was investigated in alkaline solution. The CoFe-HM-T electrode exhibited excellent oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) catalytic activity with overpotentials of 320 mV and 200 mV at the current density of 100 mA cm −2 , respectively. CoFe-HM-T also possessed the smallest Tafel slope among the prepared samples, which was estimated to be 38.1 mV dec −1 and 144.9 mV dec −1 for OER and HER, respectively. Serving as bifunctional catalysts, the CoFe-HM-T electrode reached the state-of-art current density of 10 mA cm −2 at a cell voltage of 1.70 V with excellent stability. The enhanced electrocatalytic activity was ascribed to the interconnected structure facilitating the mass transport, the heterojunction accelerating the charge transfer, and the synergistic effect between them. This study offered a new strategy for in situ synthesizing the heterojunction electrocatalysts with unique interface by readily tuning the metal components in transition-metal LDHs.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）