ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Jiamin Shi,Gaozhan Liu,Wei Weng,Liangting Cai,Qiang Zhang,Jinghua Wu,Xiaoxiong Xu,Xiayin Yao
Poor solid–solid contact between an electrode and solid electrolyte is a great challenge for all-solid-state lithium batteries (ASSLBs) which results in limited ion transport and eventually leads to rapid capacity fading. Two-dimensional (2D) materials have incomparable advantage in the construction of the desired interface because of their flat surface and large specific surface area. In order to realize intimate interfacial contact and superior ion transport, monodisperse 2D Co3S4 hexagonal platelets as cathodes for all ASSLBs are synthesized through a series of topological reactions followed with in situ coating of tiny Li7P3S11 using a liquid-phase method. The unique 2D hexagonal platelets are favorable for in situ solid electrolyte coating. Moreover, the well-designed interfacial structure can make the electrode materials contact with solid electrolytes more closely, contributing to a remarkable improvement on electrochemical performance. ASSLBs employing the Co3S4@Li7P3S11 composite platelets as a cathode deliver a large reversible capacity of 685.9 mA h g–1 at 0.5 A g–1 for 50 cycles. Even at a high current density of 1 A g–1, the Co3S4@Li7P3S11 composite cathode still exhibits a high capacity of 457.3 mA h g–1 after 100 cycles. This work provides a simple strategy to design the composite electrode with intimate contact and superior ion transport via morphology controlling.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Xiaoyu Huang,Yuan Yang,Jialu Zhao,Yin Huang,Xiuhua Wang
Metal-organic frameworks (MOFs) have sparked considerable interest as prospective metal precursors or sacrificial templates to design high-performance supercapacitor electrode materials. Here Co 3 S 4 @NiCo 2 S 4 nanocages supercapacitor electrode material with a dual-core layer hollow structure was successfully constructed through an appropriate ion-exchange strategy of MOFs and the subsequent vulcanization treatment. The specific capacitance of the Co 3 S 4 @NiCo 2 S 4 electrode was up to 1202 F g −1 at 1 A g −1 and could still attain 80% initial capacity at 10 A g −1 . The integrated Co 3 S 4 @NiCo 2 S 4 //AC asymmetric supercapacitor achieved 58 Wh kg −1 of energy density at 750 W kg −1 of power density. The asymmetric supercapacitor retained 81.8% of its capacitance after 10,000 galvanostatic charge-discharge cycles. In this study, the individual nanostructure and excellent electrochemical properties of Co 3 S 4 @NiCo 2 S 4 nanocages provide a rational strategy for developing high-energy-density supercapacitor electrode materials based on MOFs derivatives.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yang Nie,Hui Feng,Haijun Wang,Yubin Hu,Lixin Cao,Bohua Dong
The sulfion oxidation reaction (SOR) presents an efficient pathway for hydrogen production via seawater electrolysis, as its anode voltage is substantially lower than that of the oxygen evolution reaction (OER). This thermodynamic advantage significantly reduces energy consumption while effectively suppressing chlorine evolution and related side reactions, thereby improving both the efficiency and economic feasibility of seawater electrolysis systems. Nevertheless, to achieve the practical application of SOR in real seawater electrolysis, it is still necessary to develop electrocatalysts with both high activity and long-term stability to withstand the harsh seawater environment under high current density. Herein, this study successfully synthesized Cr-doped Co 3 S 4 (Cr-Co 3 S 4 ) nanowires for the SOR. Cr doping reduces part of Co 3+ to active Co 2+ , and the high reducing property of Co 2+ accelerates the progress of SOR. In-situ Raman spectra and Density functional theory (DFT) calculations show that Cr doping optimized the adsorption of sulfion and polysulfide ions on Co 3 S 4 and the efficient desorption of S 8 , which improved the catalytic activity and stability. Furthermore, Cr-Co 3 S 4 only requires 0.596 V to achieve a current density of 100 mA cm −2 in the SOR-HER coupled system and maintains stability for 250 h. This work demonstrates a promising strategy for hydrogen production via sulfion-oxidizing mixed electrolysis of seawater, enabling energy-efficient hydrogen generation alongside sulfion-containing wastewater treatment. It thus provides a synergistic approach to green hydrogen production and environmental remediate.
研究领域:
电化学
·
材料科学
·
能源技术
·
环境工程
·
理论化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2019
·
IF 13.903
Hui Zhang,Mingchu Zou,Wenqi Zhao,Yunsong Wang,Yijun Chen,Yizeng Wu,Linxiu Dai,Anyuan Cao
Lithium–sulfur (Li–S) batteries are next-generation energy storage systems with high energy density, and the rate performance is a very important consideration for practical applications. Recent approaches such as introducing catalytic materials to facilitate polysulfide conversion have been explored, yet the results remain unsatisfactory. Here, we present an optimized Li–S electrode featured by a large amount of highly dispersed Co3S4 nanoparticles (∼10 nm in size) throughout a hierarchical carbon nanostructure hybridized from ZIF-67 and carbon nanotube (CNT) sponge. This enables homogeneous distribution and close contact between infiltrated sulfur and Co3S4 nanoparticles within the ZIF-67-derived N-doped carbon nanocubes, leading to effective chemical interaction with polysulfides, maximum catalytic effect and enhanced lithium ion diffusion, while the built-in three-dimensional CNT network ensures high electrical conductivity of the electrode. As a consequence, the Li–S battery exhibits both extraordinary rate performance by maintaining a capacity of ∼850 mAh g–1 at very high charge/discharge rate (5 C) and long-term cycling stability with 85% retention after 1000 cycles at 5 C (an average capacity fading rate of only 0.0137% per cycle).
研究领域:
材料科学
·
能源存储
·
电化学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2021
·Vol. 12
·期 4
·1144-1158
·
IF 6.119
Junke Li,Mei Li,Zhiliang Jin
An S-scheme surface heterojunction between Co3S4 and Mo2S3 was constructed successfully via a stepwise hydrothermal method. A rhombic dodecahedral cobalt-based metal–organic zeolite imidazole framework (ZIF-67) is used as the cobalt source and template to participate in the reaction process. ZIF-67 with a dodecahedral structure is first reshaped into cobalt sulfide with a hollow polyhedral structure via a one-step sulfidation reaction. And then, Mo and S species were introduced on the surface of Co3S4 to fabricate Co3S4@Mo2S3 with a hierarchical core–shell structure and S-scheme heterojunction. In comparison, the H2 evolution activity of Co3S4@Mo2S3 is about 7 and 3 times higher than those of pure Mo2S3 and Co3S4. Density functional theory (DFT) calculations were used to construct the molecular model of Co3S4 and Mo2S3, and the sample's energy band structure was also analyzed. Based on the analysis of a series of characterization results, a H2 evolution mechanism of Co3S4@Mo2S3 with a S-scheme surface heterojunction was proposed. The formation of the S-scheme surface heterojunction between Co3S4 and Mo2S3 results in a more developed channel to transfer photogenerated electrons and allows the system to retain a more effective redox potential. Besides, the Mo2S3 nanosheet's criss-cross growth on the Co3S4 surface is beneficial to the improvement of the cycle stability of the Co3S4@Mo2S3 composite. This work uses a ZIF-67 polyhedron as the template to provide a new strategy for preparing a hierarchical S-scheme surface heterojunction photocatalyst based on MOFs.
研究领域:
材料科学
·
化学
·
纳米技术
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yongxuan Xiang,Wenji Li,Jiapeng Wang,Hongyue Tong,Xinmiao Li,Hua-Bin Yuan,Ziwei Wu,Guoqiang Chen,Tieling Xing
Metal–organic framework (MOF) materials have been extensively utilized in water electrolysis owing to their versatile chemical configurations and three-dimensional porous and exceptional surface areas characteristics. This study implemented an MOF-derived synthesis approach to develop a self-supporting electrocatalytic system. Initially depositing nanostructures on flexible carbon cloth through controlled growth, subsequent thermal treatment, and solution-phase sulfurization processes generated the Co3S4/Ni3S2@CC composite. The engineered material demonstrates hierarchical porosity and synergistic interfacial effects between components, facilitating numerous catalytic centers and optimized electron transport pathways. Strategic sulfur incorporation successfully tailors the electronic environment, substantially boosting the reaction kinetics. The integrated heterointerface electrode manifests superior dual-functional performance in alkaline freshwater electrolysis, demonstrating remarkably low overpotentials of 169 mV (HER) and 294 mV (OER), respectively, to attain a 10 mA cm–2 current density, while maintaining excellent durability under continuous operation. When operating in saline environments, the catalyst demonstrates remarkable catalytic activity, exhibiting overpotentials of 177 mV for the HER and 323 mV for the OER under identical current density conditions. Introducing ethanol or methanol into the electrolyte system significantly reduces the activation potential and lowers the overall energy requirements. These findings provide crucial guidance for developing advanced MOF-derived transition metal electrocatalysts optimized for efficient water splitting applications.
研究领域:
电化学
·
能源转换与存储
·
纳米材料
·
催化
·
可再生能源
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Shuangyue Hou,Yue Lian,Yongqing Bai,Qiuping Zhou,Chaolei Ban,Zhifeng Wang,Jing Zhao,Huaihao Zhang
Transition metal sulfide is considered a promising electrode material for supercapacitors because of its high theoretical specific capacitance and good redox reversibility. However, it is difficult for a single material to deliver ideal specific capacity and cycling stability. Herein, we report a rhombohedral dodecahedral composite Co 3 S 4 @NiO for supercapacitor. This heterogeneous hollow structure of Co 3 S 4 @NiO exposes more active sites, promotes free diffusion of electrolytes, shortens the path of electron transfer in electrochemical reaction process, and improves the capacitance performance. The electrochemical test results show its specific capacitance up to 1877.93 F g −1 in 6 M KOH electrolyte at the specific current 1 A g −1 . In particular, the composite exhibits good cyclic stability with 92.6% capacity retention after 10,000 cycles at the specific current 5 A g −1 . Meanwhile, the asymmetric supercapacitors , assembled with Co 3 S 4 @NiO as positive electrode and activated carbon as negative electrode, delivered high energy density 54.99 Wh kg −1 as for the power density 0.78 kW kg −1 , also proving its high capacitance performance of Co 3 S 4 @NiO with unique structure.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-9
·
IF 4.259
Wang Tingting,Wu Liqian,Xu Xiaobing,Sun Yuan,Wang Yuanqi,Zhong Wei,Du Youwei
The development of efficient, universal and inexpensive electrocatalysts for hydrogen evolution reaction (HER) is central to the area of sustainable energy conversion. Considering the Co-based sulfides/phosphides have the same catalytic mechanism with the hydrogenases occurring in nature. Here, a new catalyst based on Co 3 S 4 /CoP hybrid that is comprised entirely cheap and earthabundant elements, was first synthesized via a two-step method, the Co(CO 3 ) 0.5 (OH)·0.11H 2 O precursor was prepared by a hydrothermal method, followed by phosphidation and sulphidation under Ar atmosphere simultaneously. The resulting Co 3 S 4 /CoP hybrid material possessed porous core-shell structure with a homogeneous element distribution and large electroactive surface area (~21.04 mF cm −2 ). More importantly, the nanostructured Co 3 S 4 /CoP electrode exhibits excellent HER properties in acid medium with a low onset overpotential of 34 mV, a small Tafel slope of 45 mV dec −1 , as well as a large exchange current density of 150 μA cm −2 . These results obtained in this study indicate that the Co 3 S 4 /CoP hybrid nanorod is promising replacement to the Pt-based catalysts for H 2 production. Moreover, the synthetic method presented in this work can provide an efficient way to synthesis other nanocomposites.
研究领域:
材料科学
·
能源转换技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Wenting Cai,Shuai Liu,Tongxue Zhang,Ke Fan,Xubin Zhang,Fumin Wang,Jing-Jing Lv,Xijun Liu
The electrooxidation of 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylic acid (FDCA) serves as an effective means to substitute the kinetically slow anode oxygen evolution reaction (OER) in water electrolysis for hydrogen generation. Nickel-based materials are promising catalysts, but the weak adsorption ability of the active species NiOOH on HMF leads to slow dehydrogenation kinetics, making the rational design of active Ni sites a huge challenge. Herein, a novel heterojunction catalyst (NiO@Co 3 S 4 /NF) with S vacancies is successfully synthesized by interface engineering. Specifically, the construction of the heterostructure optimizes the electronic structure of Ni, which in turn facilitates the generation of NiOOH and enhances its ability to adsorb substrate molecules. S vacancies are beneficial for exposing more active sites and increasing the active surface area. Density functional theory calculations demonstrate that the interfacial electronic redistribution effectively adjusted the d-band center of Ni, and the strong d-p orbital coupling interaction between Ni and HMF can significantly lower the energy barrier of the dehydrogenation step, thereby promoting the highly selective oxidation of HMF to FDCA. Consequently, the NiO@Co 3 S 4 /NF exhibits outstanding electrocatalytic activity, achieving a current density of 50 mA cm −2 at only 1.30 V vs. RHE, with a FDCA yield of 99.62% and a Faradaic efficiency of 99.67%, along with excellent cycling stability. Our work provides new insights into catalyst regulation for biomass upgrading.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2021
·
IF 6.583
Mengni Xu,Hao Guo,Tingting Zhang,Junye Zhang,Xiaoqiong Wang,Wu Yang
The sulfide derived from Zeolitic Imidazolate Frameworks (ZIFs) with conductive polymer has aboundant electroactive sites and more redox reactive centers, which shows great promising for supercapacitors. Here, the composite of ZIF-67 and polyaniline (PANI) is synthesized by simply stirring (ZIF-67/PANI). Among them, PANI serves as a growth substrate of ZIF-67 for transfer scaffold of electrons and works as a wire to connect nanoparticles, making the conductivity of ZIF-67 improved. Furthermore, sulfur is introduced into ZIF-67/PANI by additional sulfurization (Co 3 S 4 /PANI). The introduction of sulfur can promote electron transfer for the low electronegativity. The obtained Co 3 S 4 /PANI is applied to supercapacitors and at a current density of 1 A•g −1 , the specific capacitance is up to 11 times that of the ZIF-67. The assembled asymmetric supercapacitors (ASC) device exhibits a high specific energy of 40.75 Wh•kg −1 at a specific power of 800 W•kg −1 and displays supercycling stability. After 20, 000 cycles of charge and discharge tests, it still can maintain 88% of initial capacitance at a higher current density of 5 A•g −1 . Excellent electrochemical performance indicates that the prepared material possesses good market development prospects and is a promising candidate in energy storage fields.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 45
·455706
·
IF 3.874
Yanhui Song,Wenbo Sha,Tingyu Jiao,Chengqiang Wang,Jiakang Tian,Peizhi Liu,Bingshe Xu,Junjie Guo,Jianguo Liang
Exploring bifunctional electrocatalysts with high efficiency, inexpensive, and easy integration is still the daunt challenge for the production of hydrogen on a large scale by means of water electrolysis. In this work, a novel free-standing Co3S4/CoMo2S4 heterostructure on nickel foam by a facial hydrothermal method is demonstrated to be an effective bifunctional electrocatalyst for overall water splitting (OWS). The synthesized Co3S4/CoMo2S4 electrocatalyst achieves ultralow overpotentials of 143 mV@10 mA cm−2 for hydrogen evolution reaction (HER) and 221 mV@25 mA cm−2 for oxygen evolution reaction (OER), respectively, in 1 M KOH. Moreover, it presents a greatly improved durability and stability under operando electrochemical conditions. When used as catalysts for OWS, the Co3S4/CoMo2S4-3//Co3S4/CoMo2S4-3 electrodes just need 1.514 V to make it to the current density of 10 mA cm−2. It is supposed that the introduction of heterogeneous interface between Co3S4 and CoMo2S4 could give rise to plentiful active sites and enhanced conductivity, and thus boost excellent catalytic performances. Moreover, the porous feature of free-standing nanosheets on nickel foam could benefits catalytic performances by accelerating charge transport and releasing bubbles rapidly. This work proposes a bifunctional catalyst system with the heterogeneous interface, which could be used in a sustainable green energy system.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
Applied Materials Today
·
2021
·
IF 10.041
Jiabing Luo,Yan Zhou,Yongxiao Tuo,Yufeng Gu,Xingzhao Wang,Qianyu Guo,Chen Chen,Dong Wang,Shutao Wang,Jun Zhang
Constructing suitable heterostructured electrocatalysts and understanding their interfacial effects have been considered as an effective strategy to improve the intrinsic activity of electrocatalytic hydrogen evolution reaction (HER). In this work, ultra-small Co 3 S 4 -MoS 2 heterostructure was synthesized using a precursor solubility controlling method. It is found that the electrocatalytic HER performance of the heterostructured catalysts exhibited a low overpotential of 260 mV at 100 mA cm −2 in 1.0 M KOH and possessed remarkable stability over 100 h continuous electrolysis at high current density (100 mA cm −2 ). Besides, Co 3 S 4 -MoS 2 electrocatalyst is applied as the cathode material for a homemade membrane electrode device for water electrolysis to produce hydrogen. It shows that the electrocatalyst has a comparable catalytic activity to that of 20% Pt/C catalyst at 70 °C. The outstanding performance of the ultra-small Co 3 S 4 -MoS 2 heterostructure is attributed to the efficient mass transport benefitting from its unique ultra-small hollow structure and the rapid electron transfer at the interface between Co 3 S 4 and MoS 2 . XPS characterizations and DFT calculations confirm that the interfacial polarization and the corresponding electron transfer from Co 3 S 4 to MoS 2 at the interface optimizes the charge state of the catalyst and tunes the binding strength to the intermediates during each elementary step of the HER process. To be exact, the electron transfer promotes the adsorption of OH* on the charge-depleted Co 3 S 4 sites and the adsorption of H* on the charge-enriched MoS 2 sites, respectively, thereby reducing the free energy barrier of the water dissociation step (rate-limiting step) and improving the reaction kinetics. The solubility controlling strategy may provide a novel idea for rational design and synthesis of superior stability transition metal sulfides HER electrocatalysts.
研究领域:
材料科学
·
电化学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）