Journal of the Taiwan Institute of Chemical Engineers
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2022
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IF 5.477
Yutong Nong,Man Zhang,Qianqian Li,Qichang Pan,Youguo Huang,Hongqiang Wang,Fenghua Zheng,Qingyu Li
Lithium ion batteries (LIBs) are widely used in portable electronic devices and hybrid vehicles because of their high energy density, long cycle life and environmental friendliness. Constructing bimetallic sulfide have been demonstrated as most promising strategy for prepare high performance anode materials for LIBs. However, the huge volume change resulting in poor cycle life during the change and discharge process was the key issue of transition metal sulfides. Here, bimetallic sulfide carbon micro-rods consist of Co 9 S 8 /ZnS core and outer carbon shell (Co 9 S 8 /ZnS@C MRs) is synthesized as anode materials for LIBs. Such a well-designed architecture have various advantages including the bimetallic sulfide Co 9 S 8 /ZnS heterostructures can generate built-in electric field, which boosting the ion and electron transfer at the interfaces between Co 9 S 8 and ZnS. Moreover, the outer carbon layer can enhance the conductivity, and buffer the volume expansion of Co 9 S 8 /ZnS during the lithiation/delithiation process. As a result, combined with the merits of heterostructures and core-shell structure, the Co 9 S 8 /ZnS@C MRs exhibits outstanding electrochemical performance. Specifically, it can deliver a high capacity of 591.1 mAh g −1 after 1000 cycles at 1.0 A g −1 , and maintain a capacity of 367 mAh g −1 even at 5.0 A g −1 .
研究领域:
材料科学
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能源存储
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DOI
高影响因子
CRYSTENGCOMM
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2026
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IF 2.4
Weihuang Lin,Ying Yang,Zhaozhe Chen,Si Xiao,Weijia Wang
A facile sequential cation exchange reaction approach to synthesise two types of ternary sulphide NHs with comparable bulk composition, crystal structure, particle size and interfacial quality, but inverted component sequences of Cu1.94S–ZnS–Co9S8 (CZC) and Cu1.94S–Co9S8–ZnS (CCZ) was reported. Femtosecond transient absorption spectroscopy revealed that the ZnS/Co9S8 interface enables efficient charge transfer (τ3 = 46.49 ps) in CZC, whereas the same interface hinders efficient charge migration and leads to severe non-radiative recombination in CCZ. This difference in charge transport behaviour results in a higher hydrogen evolution rate for CZC. Furthermore, extending this strategy to larger-sized rod-shaped CZC NHs achieves a high hydrogen evolution rate of 1047.2 μmol g−1 h−1 with improved structural stability.
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Jinkun Hou,Ruiying Wang,Luchao Yue,Jiancheng Wang,Jie Mi,Liqiang Deng,Azamat Boymirzayev,Jasur Shodmanov,Yu Feng
Transition metal sulfides (TMSs) hold immense promise for high-performance supercapacitors due to their rich redox chemistry and exceptional theoretical capacitance. However, their practical realization is severely hampered by intrinsically poor electronic conductivity and detrimental volumetric changes during cycling, which compromise rate performance and long-term stability. Herein, we rationally design and fabricate Ni 3 S 2 /Co 9 S 8 heterostructures intimately anchored on conductive carbon nanofibers (CNFs). This unique architecture creates abundant heterointerfaces that induce synergistic charge redistribution, generating a robust built-in electric field. This field critically accelerates redox reaction kinetics and interfacial charge transfer, while the integrated CNF network ensures efficient electron pathways and buffers pulverization, thus maintaining structural integrity. Consequently, the optimized Ni 3 S 2 /Co 9 S 8 @CNFs electrode delivers a specific capacitance of 1679F g −1 at 0.5 A g −1 . Moreover, an assembled Ni 3 S 2 /Co 9 S 8 @CNFs//AC asymmetric supercapacitor achieves a energy density of 67.7 W kg −1 at power density of 750 W kg −1 , coupled with excellent cycling stability (96.2 % capacitance retention after 10,000 cycles). This work not only demonstrates a potent strategy for fabricating advanced TMS-based electrodes but also provides fundamental insights into heterointerface engineering for superior electrochemical energy storage, paving the way for next-generation high-energy–density devices.
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
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IF 11.2
Man Li,Qianqian Jia,Zhenguo An,Jingjie Zhang
Multiscale shell structure design is a rational and promising way to regulate the performance of hollow spheres in terms of both functionality and structural robustness, but it remains a big challenge to realize micro-nano engineering of the thin shell while maintaining the low density. In this work, the divisional shell design strategy was adopted to obtain the glass-cobalt-cobalt sulfide composite hollow microspheres (CSH), and an unprecedented stepwise high-temperature chemical reaction-induced aggregation and subsequent volume expansion strategy was developed to achieve rational regulation of core-shell structured cobalt-cobalt sulfide building units (BU) assembled on hollow glass microspheres. Special attention has been paid to the sulfidation degree-induced volume control with the underlying mechanism of volume expansion during chemical conversion from metallic cobalt to cobalt sulfide. The electromagnetic property was found to depend largely on the sulfidation degree due to the volume expansion-induced interconnecting status regulation among the BU. When evaluated as microwave absorbent, an optimized broad bandwidth of 5.12 GHz and a minimum reflection loss (RL min ) of –45.58 dB of our CSH can be achieved at a thin matching thickness of 1.67 mm and a low filling ratio of 20.04 wt%. In addition to functionality, the divisional shell design also brings the CSH high structural strength (92.36 % survival rate at a high hydrostatic pressure of 20 MPa) at low density (0.73 g cm –3 ).
研究领域:
材料科学
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电磁学
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DOI
高影响因子
ELECTROCHIMICA ACTA
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2017
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IF 4.798
Yatian Zhang,Shujun Chao,Xiaobing Wang,Huijuan Han,Zhengyu Bai,Lin Yang
Making efficient trifunctional non-precious metal catalysts for simultaneously catalyzing oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in same electrolyte is very important to bring energy conversion and storage systems into realities. Herein, hierarchical Co 9 S 8 hollow microspheres had been designed and synthesized by a facile hydrothermal reaction at 140 °C (denoted as Co 9 S 8 HMs-140). The properties and formation process of the Co 9 S 8 HMs-140 were systematically investigated. Owing to the composition and structure features, the Co 9 S 8 HMs-140 can be used as a trifunctional catalyst for ORR, OER and HER in the same alkaline electrolyte . The Co 9 S 8 HMs-140 shows reasonable ORR and HER performance. Additionally, OER performance of the Co 9 S 8 HMs-140 is superior to that of RuO 2 , such as a low onset potential (1.47 V vs. RHE) and high stability. Furthermore, due to the bifunctional OER and HER activity of the Co 9 S 8 HMs-140, the Co 9 S 8 HMs-140 affords an O 2 efficiency of 31 mmol h −1 and a H 2 efficiency of 62 mmol h −1 at 1.60 V in 1 M KOH solution under the given time range, exhibiting a 96% faradaic yield in the process of full water splitting to produce O 2 and H 2 . The present work will provide a promising prospect for the development of multifunctional transition metal sulfides as effective electrocatalysts for sustainable energy systems.
研究领域:
材料科学
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电化学
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能源转换与存储
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DOI
高影响因子
ELECTROCHIMICA ACTA
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2020
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IF 6.215
Xiaohui Liu,Xiaofeng Li,Manli An,Yanfang Gao,Zhenzhu Cao,Jinrong Liu
Due to the unique characteristics like large specific surface area of Transition Metal Dichalcogenides (TMDs) and its well-defined hollow Metal-Organic Framework (MOF), it is widely used in dye-sensitized solar cells (DSSCs), oxygen reduction (ORR) and oxygen evolution reaction(OER). Herein, we prepare N-doped C hollow metal organic frame structure materials , which are used as a template, WS 2 nanocrystals are grown and encapsulated in MOF with interfacial W–N coupling centers. During the pyrolysis, after carbonizing, ZIF-67 becomes Co, N-doped C materials, and the growth of WS 2 is effectively suppressed, creating multi-functional groups W–N/C@Co 9 S 8 @WS 2 materials. The synthesized material is employed as a counter electrode (CE) for dye-sensitized solar cells, its high power conversion efficiency (PCE) (7.38%) based DSSC under AM 1.5G irradiation was much more than that of Pt (7.06%). Such excellent electrocatalytic performance was resulted from the unique frame pore structure , the synergistic effect of WS 2 , Co 9 S 8 and W–N multi-functional groups. Besides, W–N/C-4@Co 9 S 8 @WS 2 shows E 1/2 ≈0.84 V and a little Tafel slope of 44 mVdec −1 when employed as electrocatalysts for ORR and potential ≈ 1.79 V to achieve the current density of 10 mA cm −2 , which are lower than that of Pt/C ≈ 1.91 V catalysts in 0.1 M KOH.
研究领域:
材料科学
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能源化学
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电催化
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
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IF 4.175
Shihang Guo,Pengcheng Zhang,Yi Feng,Zhongguo Wang,Xiaodan Li,Jianfeng Yao
Cellulose nanofibers (CNFs) are used to string ZIF-67 particles and interlaced Co 9 S 8 /porous carbon composite (Co 9 S 8 /C-CNFs) is obtained via carbonization and sulphidation of ZIF-67/CNFs composites. The CNFs can effectively limit the growth of ZIF-67 particles and avoid the agglomeration and most importantly, serve as the conductive skeleton to “bridge” carbonized ZIF-67 particles after carbonization. Due to the unique structure and the improved conductivity, Co 9 S 8 /C-CNFs as anode of lithium-ion batteries exhibits enhanced electrochemical properties and the specific capacity is 700 mAh g −1 at current density of 500 mA g −1 after 150 cycles compared to that of 342 mAh g −1 for samples without CNFs incorporation. Such nanoscale design may boost to explore other nanocomposites for energy storage.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
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2017
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IF 4.798
Y.H. Wang,B.H. Wu,X.Y. He,Y.Y. Zhang,H. Li,Y.Y. Peng,J. Wang,J.B. Zhao
Micro/nanostructured Co 9 S 8 cubes and spheres (S-Co 9 S 8 ) were successfully prepared with Co 3 O 4 as templates via the vapor-based anion exchange reaction. The morphology and structure of both materials were characterized by SEM and XRD. Co 9 S 8 microcubes and microspheres were composed of nanoparticles , inheriting the micro/nanostructure of Co 3 O 4 precursors. Tested in lithium ion batteries , C-Co 9 S 8 and S-Co 9 S 8 anodes exhibited high specific capacities, excellent cycle stability (C-Co 9 S 8 : 369 mAh g −1 , S-Co 9 S 8 : 370 mAh g −1 over 300 cycles at 1C) and high rate performances (C-Co 9 S 8 : 450 mAh g −1 , S-Co 9 S 8 : ∼430 mAh g −1 at 5C).
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
Na Liang,Zixu Yin,Jingyun Guo,Wanying Fang,Qi Wang,Ge Tian,Dong Zhang,Huijuan Yue,Shouhua Feng
Exploring new strategies to incorporate the concepts of green chemistry and defect engineering into new architectures to address the problem of severe electromagnetic wave (EMW) pollution is challenging. In this work, by using a by-product of catalytic conversion of biomass as a carbon source, we prepare two-dimensional (2D) Co 9 S 8 -coated humins-derived carbon nanomaterials with a yolk-shell structure. The EMW attenuation ability is finally optimized by controlling the morphology and defects of the composite material through the pyrolysis temperature. As expected, with the synergy of conductive loss/interfacial polarization and defects regulating, the composite material achieves a reflection loss (RL) value of −51.4 dB in Ku-band and the effective absorption bandwidth (EAB) can be as high as 5.92 GHz (12.08–18.00 GHz) at 1.8 mm ultra-thin coating thickness. A strong absorption capacity in the low-frequency C-band (6.4 GHz) reaches RL value of −49.9 dB and a thickness of 3.50 mm, which grants it the characteristic of convertible microwave absorption from high frequency to low frequency. Taking account of the facile synthesis and tunable absorption properties, the encouraging findings shed light on exploring waste-turned-microwave absorbents with promising practical applications.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Haoran Wang,Zuoyi Xiao,Siyu Gao,Haoran Zhang,Jianxi Zhang,Meijie Gao,Zizhen Yang,Yao Tong,Chuanyin Xiong,Junhong Fu,Shangru Zhai,Qingda An
Commercial AC is employed as the support to fabricate the P-CoO/Co 9 S 8 @AC electrode. • The formation of P-CoO/Co 9 S 8 @AC realizes the deep coupling of macroscopic structural buffering and atomic-scale electronic regulation. • The synergy of heterointerface and P doping enhances OH − adsorption and accelerates redox reaction rate. • The ASC achieves a high energy density of 90.4 Wh kg −1 at 750 W kg −1 . Supercapacitor performance is largely determined by electrode materials. Transition metal compounds (TMCs) have high theoretical capacities but suffer from sluggish charge transport and volume-induced structural degradation, which limits their practical applications in energy storage. To overcome the inherent bottlenecks of TMCs in energy storage, this work reports a novel dual-regulation strategy to construct a P-doped CoO/Co 9 S 8 heterostructure anchored on activated carbon (P-CoO/Co 9 S 8 @AC). The formation of the P-doped CoO/Co 9 S 8 @AC heterostructure enables close coupling between macroscopic structural buffering and atomic-scale electronic modulation. Introducing activated carbon (AC) suppresses particle agglomeration and buffers volume expansion, while the synergistic effect of heterointerface engineering and P doping significantly reduces the charge-transfer resistance to 0.27 Ω. Benefiting from these multidimensional advantages, the as-prepared material delivers a specific capacity of 1697.3 C g −1 (3394.6 F g −1 ) at 1 A g −1 , outperforming previously reported nickel sulfide/nickel oxide heterostructures (2278 F g −1 ) and P-doped ternary cobalt-based sulfide electrodes (2716 F g −1 ). Density functional theory (DFT) calculations show that the P-doped heterostructure has an OH − adsorption energy of −4.82 eV and an upshifted d-band center, thereby improving intrinsic conductivity and OH − interfacial adsorption. Furthermore, the assembled hybrid supercapacitor (HSC) achieves a high energy density of 90.4 Wh kg −1 at a power density of 750 W kg −1 , while retaining 86.1% of its capacity after 20,000 cycles. This study provides a design strategy for constructing high-performance composite electrodes by integrating heterointerface engineering and heteroatom doping. A novel strategy is reported to construct P-CoO/Co 9 S 8 @AC. DFT calculations demonstrate that the synergistic effect of CoO/Co 9 S 8 heterostructure formation and P doping strengthens OH − adsorption and boosts the electrochemical performance. Download: Download high-res image (173KB) Download: Download full-size image
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Jie Zhang,Jiachun Li,Wenda Chen,Qinghao Zhang,Jiayi Li,Yongliang Li,Xiangzhong Ren,Xiaoping Ouyang,Xiangtong Meng,Jieshan Qiu,Jiangtao Hu,Shenghua Ye,Jianhong Liu,Qianling Zhang
Electrocatalytic NO 3 − -to-NH 3 conversion via nitrate reduction reaction (NO 3 − RR) is a complex proton-coupled electron transfer (PCET) process. The valence band of an electrocatalyst and the release and delivery of protons at electrocatalyst-electrolyte interfaces directly govern electron and proton transfer, respectively. In this study, Co 9 S 8 hollow polyhedrons were designed as an effective electrocatalyst for NO 3 − -to-NH 3 conversion in the phosphate buffer saline (PBS), a protic auxiliary electrolyte. Experimental evidence suggests that Co 9 S 8 presents metallic characteristics with lower work function and outstanding electronic conductivity, facilitating electron transfer at electrocatalyst-electrolyte interfaces. In-situ spectroscopy confirms that Co 9 S 8 promotes the dissociation of HPO 4 2− and the proton transfer at electrocatalyst-electrolyte interface, thereby accelerating the hydrogenation process of adsorbed NO 3 − and other intermediates. Benefiting from these advantages, Co 9 S 8 demonstrates a significantly lower onset potential and higher NH 3 yield compared to the commonly used and stable electrocatalyst Co 3 O 4 for NO 3 − -to-NH 3 conversion. This study proposed a new insight about the electron and proton transfer process for NO 3 − RR.
研究领域:
化学
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材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
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IF 11.2
Haotian Jiang,Chengjuan Wang,Cuicui Chen,Xiaodan Xu,Shichao Dai,Bohan Ding,Jinghe Guo,Yue Sun,Yanxiang Wang,Chengguo Wang
Carbon-based electromagnetic wave (EMW) absorbing materials attached with metal sulfides famous for good dielectric properties are favored by researchers, which can form heterogeneous interfaces and thus provide supplementary loss mechanisms to make up for the deficiencies of a single material in energy attenuation. Here, Co 9 S 8 /Co@coral-like carbon nanofibers (CNFs)/porous carbon hybrids are successfully fabricated by hydrothermal and chemical vapor deposition. The samples have exceptional EMW absorbing properties, with a minimum reflection loss of −57.48 dB at a thickness of 2.94 mm and an effective absorption bandwidth of up to 6.10 GHz at only 2.20 mm. The interlocking structure formed by Co@coral-like CNFs, interfacial polarization generated by heterostructure of Co 9 S 8 , abundant defects and large specific surface area resulted from porous properties are important factors in attaining magnetic-dielectric balance and excellent absorption performance. Different matrixes are selected instead of paraffin to investigate the effect of matrix materials on EMW absorbing capacity. Besides, the EMW attenuation potential for practical applications is also demonstrated by radar cross-section simulations, electric field intensity distribution and power loss density. This work provides a novel strategy for designing outstanding EMW absorbers with unique microstructures using facile and low-cost synthetic routes.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）