Nanomaterials
·
2020
·Vol. 10
·期 11
·2115
·
IF 4.324
Yuan Gao,Ka Wang,Zixia Lin,Haizeng Song,Xiaomeng Duan,Zehui Peng,Shancheng Yan
Transition metal sulfides are cheap and efficient catalysts for water splitting to produce hydrogen; these compounds have attracted wide attention. Nickel sulfide (NiS2) has been studied in depth because of its simple preparation process, excellent performance and good stability. Here, we propose a modification to the hydrothermal synthesis method for the fabrication of a highly efficient and stable NiS2electrocatalyst prepared by two different sulfur sources, i.e., sulfur powder and C3H7NaO3S2(MPS), for application in hydrogen evolution reactions. The obtained NiS2demonstrated excellent HER performance with an overpotential of 131 mV to drive -10 mA cm−1in 0.5 M H2SO4solution with 5mV performance change after 1000 cycles of stability testing. We believe that this discovery will promote the industrial development of nonprecious metal catalysts.Keywords:transition metal sulfide;hydrogen evolution reaction;electrocatalyst
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xianfeng Sun,Yan Zhang,Cheng Du,Mingjiang Xie,Jian Chen,Liu Wan
The interface engineering strategy of hybridizing transition metal sulfides (TMSs) with other electroactive materials has proven to be a powerful strategy to exploit advanced electrode materials for supercapacitors (SCs). Herein, CuNi 2 S 4 nanospheres were grown directly onto carbon cloth (CC) by a single-step electrodeposition procedure, and the bimetallic selenide NiCoSe 2 then was deposited over the CuNi 2 S 4 nanospheres to create a flexible CuNi 2 S 4 @NiCoSe 2 hybrid electrode material with special core–shell architecture. The nanoflower-like hybrid structure not only increases the redox active sites but also provides short paths for electron/ion transport and improves redox reaction kinetics. The CuNi 2 S 4 @NiCoSe 2 electrode achieves a capacity value of 979.2 C g −1 /3.43 C cm −2 at 1 A g −1 along with good rate performance, outperforming pristine CuNi 2 S 4 and NiCoSe 2 . This wonderful supercapacitive behavior is related to the synergy of CuNi 2 S 4 ’s high conductivity and NiCoSe 2 ’s high electroactivity. Furthermore, the hybrid supercapacitor using the CuNi 2 S 4 @NiCoSe 2 cathode along with the porous carbon from pine pollen anode achieves an energy density (78.9 Wh kg −1 at 720.2 W kg −1 ) and maintains 91.4 % of original capacity after 50,000 cycles. These findings affirm that the CuNi 2 S 4 @NiCoSe 2 heterostructure is structurally superior as an electrode material in advanced energy storage systems.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Qun Li,Qingze Jiao,Yu Yan,Huanjun Li,Wei Zhou,Tingting Gu,Xueran Shen,Chengxing Lu,Yun Zhao,Yaoyuan Zhang,Hansheng Li,Caihong Feng
The sluggish kinetics and severe volume expansion are two major drawbacks that limiting the application of transition metal sulfides electrode materials for sodium ion batteries (SIBs). Herein, we assembled Ti 3 C 2 T x MXene nanosheets into thin-walled hollow spheres with PMMA spheres as sacrificial template, on which MOF-derived CoS 2 nanoparticles embedded in N-doped carbon were grown (MXene@CoS 2 /NC). The MXene@CoS 2 /NC exhibits state-of-the-art sodium ion storage properties, including a high reversible capacity of 620 mAh g −1 at 0.2 A g −1 , superior rate capability (394 mAh g −1 at 5 A g −1 ), and excellent cycling stability (355 mAh g −1 after 5000 cycles). The corresponding electrochemical tests prove that the MXene@CoS 2 /NC has fast Na + ion diffusion and electron transfer compared with its counterpart without MXene interfaces. XPS and XANES characterizations disclose the introduced MXene and increased pyrrolic N can weaken the Co-S bonds of CoS 2 , which facilitates the conversion reaction between CoS 2 and Na 2 S, and thus improves the sodium storage kinetics. The DFT calculations also demonstrate the MXene can improve the conductivity of electrode materials by fast interfacial electron transfer. In addition, the MXene hollow spheres and MOF-derived NC provide host structures for CoS 2 , which can increase the contact between electrolyte and active materials, buffer the volume expansion of CoS 2 , and thus enhancing the electrochemical stability. This work provides a feasible strategy to construct anode materials for SIBs with improved sodium storage kinetics and cycling stability.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 7
·1229
·
IF 5.3
Jing Li,Jun Li,Meng Shao,Yanan Yan,Ruoliu Li
At present, binary bimetallic sulfides are widely studied in supercapacitors due to their high conductivity and excellent specific capacitance (SC). In this article, NiCo-S nanostructured hybrid electrode materials were prepared on nickel foam (NF) by using a binary metal–organic skeleton as the sacrificial template via a two-step hydrothermal method. Comparative analysis was carried out with Ni-S and Co-S in situ on NF to verify the excellent electrochemical performance of bimetallic sulfide as an electrode material for supercapacitors. NiCo-S/NF exhibited an SC of 2081 F∙g−1at 1 A∙g−1, significantly superior to Ni-S/NF (1520.8 F∙g−1at 1 A∙g−1) and Co-S/NF (1427 F∙g−1at 1 A∙g−1). In addition, the material demonstrated better rate performance and cycle stability, with a specific capacity retention rate of 58% at 10 A∙g−1than at 1 A∙g−1, and 75.7% of capacity was retained after 5000 cycles. The hybrid supercapacitor assembled by NiCo-S//AC exhibited a high energy density of 25.58 Wh∙kg−1at a power density of 400 W∙kg−1.Keywords:MOF;self-sacrificing template;transition metal sulfides;supercapacitor
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Technology
·
2022
·Vol. 10
·期 4
·2100885
·
IF 4.149
Jing Hu,Xin-Liang Wang,Hao Guo,Ming Yang,Jin-Xiu Yuan,Ying Chu,Li-Li Zhao
Transition metal sulfide is the most widely used cathode material for thermal batteries. The development of modern weapons requires higher quality and output of transition metal sulfide cathode materials. However, the current synthesis processes have some limitations for large-scale industrial production due to the long production cycle and low production efficiency. Herein, by controlling the synthesis temperature and adopting a high-temperature solid-state method, sulfide FeS 2 , CoS 2 , and NiS 2 with single-phase and good crystalline structure are synthesized. This method with a simple production process, short production cycle, and high single output is suitable for engineering production. Hence, guidance for large-scale industrial synthesis of pure phase FeS 2 , NiS 2 , and CoS 2 is provided, embodying important scientific significance and application value.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Nano Energy
·
2022
·
IF 19.069
Sin-Yi Pang,Weng-Fu Io,Lok-Wing Wong,Jiong Zhao,Jianhua Hao
Crystal phase modulations in two-dimensional (2D) materials have garnered extensive interest because of their intriguing features and potential applications. Nonetheless, synthesizing some specific phases of metastable transition metal dichalcogenides (TMDs) remains a challenge due to the restricted selectivity under chemical and physical treatments, especially for direct growth of specific phase of TMDs on 2D substrates to form heterostructures . Taking the merits of MXene with tunable atomic vacancies and surface chemistry via surface functionalization , the phase of epitaxially grown TMDs on 2D MXene can be significantly affected. In this work, 1 T′-MoS 2 and 1 T-MoSe 2 were directly grown on electrochemically synthesized MXene under controlled oxidization conditions and selected MXene substrate. Owing to the synergistic effect of TMDs and MXene, the TMDs/MXene heterostructure catalysts exhibit good electrochemical activity under acidic conditions, with a low overpotential of 167 mV at a current density of 10 mA cm −2 . Our work not only demonstrates the distinct chemical characteristic of various MXenes feasible for surface engineering which promotes the direct and in situ growth of phase controlled TMDs on MXene substrates but also displays the high electrochemical activity in TMDs/MXene heterostructure catalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2025
·
IF 4.9
Yu Qinyuan,Li Jiahui,Wang Yufen,Wei Xuedong
Transition metal sulfides (TMS) have drawn increasing research interest owing to their unique electronic structure. They hold broad prospects in accelerating the sluggish oxygen evolution reaction (OER) during water electrolysis. Metal-organic frameworks (MOFs) feature controllable electronic structures and specific surface areas, which facilitate the adsorption of reactants and expedite interfacial electron transfer. Leveraging the above-mentioned advantages of the two materials, a kind of composite electrocatalyst, CuCo 2 S 4 @MIL-53(Fe)/NF, was synthesized by growing MIL-53(Fe) in-situ onto CuCo 2 S 4 nanowires supported on nickel foam. This composite electrocatalyst can accelerate charge transfer, significantly increase the number of active sites, and enhance both electrocatalytic activity and stability. The electrocatalyst CuCo 2 S 4 @MIL-53(Fe)/NF can drive the OER with an overpotential of 390 mV at a current density of 100 mA·cm −2 . Moreover, it still demonstrates excellent catalytic activity after 75 h of testing. This study not only broadens the avenues for sulfide composites but also provides an experimental basis and support for the direct combination of metal chalcogenides and Fe-based MOFs as electrocatalysts.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Metals
·
2024
·Vol. 14
·期 2
·145
·
IF 2.6
Man Li,Ningning Yu,Lei Xu,Wenyu Wang,Fuxiang Wei,Jiqiu Qi,Yanwei Sui
Transition metal sulfides (TMSs) are considered as attractive materials in the areas of energy storage because of their unique redox properties, excellent electronic conductivity, as well as environmental friendliness. However, poor cyclic stability and limited electrochemical active sites hinder their further application. To address this issue, a flower-like hierarchical CuCo2S4structure is constructed by a two-step hydrothermal method. In this nanostructure, CuCo2S4grows outward to form a tightly bound hierarchical structure on the nickel foams (NFs). This oriented structure can provide more laminar gaps for electrolyte ion diffusion, exposing more reaction sites to increase the ion transport efficiency between the layers, reducing the ion transport resistance and improving the reaction kinetics. Thus, the CuCo2S4electrode exhibits excellent energy storage performance, exhibiting a high specific capacity of 1415.6 F g−1at 1 A g−1. After 10,000 cycles of 10 A g−1, it still has 91.9% of the initial performance. In addition, an asymmetrical supercapacitor (ASC) was constructed by choosing CuCo2S4as the anode and RGO as the cathode, which has the maximum energy density (61.8 Wh Kg−1) at 812.1 W Kg−1and significant cycling endurance (92.05% retention) at 10,000 turns. Briefly, the researchers successfully constructed an array of CuCo2S4flower-like hierarchical nanostructures and confirmed their potential application in supercapacitors.Keywords:TMSs;CuCo2S4;flower-like hierarchical nanostructure;supercapacitor
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
NATURE
·
2024
·Vol. 628
·期 8007
·313-319
·
IF 50.5
Zhang Liangzhu,Yang Zixuan,Feng Shun,Guo Zhuobin,Jia Qingchao,Zeng Huidan,Ding Yajun,Das Pratteek,Bi Zhihong,Ma Jiaxin,Fu Yunqi,Wang Sen,Mi Jinxing,Zheng Shuanghao,Li Mingrun,Sun Dong-Ming,Kang Ning,Wu Zhong-Shuai,Cheng Hui-Ming
Transition metal tellurides (TMTs) have been ideal materials for exploring exotic properties in condensed-matter physics, chemistry and materials science 1 , 2 , 3 . Although TMT nanosheets have been produced by top-down exfoliation, their scale is below the gram level and requires a long processing time, restricting their effective application from laboratory to market 4 , 5 , 6 , 7 , 8 . We report the fast and scalable synthesis of a wide variety of MTe 2 (M = Nb, Mo, W, Ta, Ti) nanosheets by the solid lithiation of bulk MTe 2 within 10 min and their subsequent hydrolysis within seconds. Using NbTe 2 as a representative, we produced more than a hundred grams (108 g) of NbTe 2 nanosheets with 3.2 nm mean thickness, 6.2 µm mean lateral size and a high yield (>80%). Several interesting quantum phenomena, such as quantum oscillations and giant magnetoresistance, were observed that are generally restricted to highly crystalline MTe 2 nanosheets. The TMT nanosheets also perform well as electrocatalysts for lithium–oxygen batteries and electrodes for microsupercapacitors (MSCs). Moreover, this synthesis method is efficient for preparing alloyed telluride, selenide and sulfide nanosheets. Our work opens new opportunities for the universal and scalable synthesis of TMT nanosheets for exploring new quantum phenomena, potential applications and commercialization.
研究领域:
材料科学
·
凝聚态物理
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Dawei Zhang,Lijuan Jiang,Yiyi Liu,Lijun Qiu,Jinming Zhang,Dingsheng Yuan
In order to solve the problem of large overpotential in water electrolysis for hydrogen production , transition metal sulfides are promising bifunctional electrocatalysts for hydrogen evolution reaction/oxygen evolution reaction that can significantly reduce overpotential. In this work, Ni 3 S 2 and amorphous MoS x nanorods directly grown on Ni foam (Ni 3 S 2 -MoS x /NF) were prepared via one-step solvothermal process, which were used as a high-efficient electrocatalyst for overall water splitting. The Ni 3 S 2 -MoS x /NF composite exhibits very low overpotentials of 65 and 312 mV to reach 10 mA cm −2 and 50 mA cm −2 in 1.0 M KOH for HER and OER, respectively. Besides, it exhibits a low Tafel slope (81 mV dec −1 for HER, 103 mV dec −1 for OER), high exchange current density (1.51 mA cm −2 for HER, 0.26 mA cm −2 for OER), and remarkable long-term cycle stability. This work provides new perspective for further the development of highly effective non-noble-metal materials in the energy field.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Li Liu,Jinming Cao,Siqi Hu,Tinghui Liu,Can Xu,Wensheng Fu,Xinguo Ma,Xiaohui Yang
Transition metal chalcogenides (TMCs) are recognized as pre-catalysts, and their (oxy)hydroxides derived from electrochemical reconstruction are the active species in the water oxidation. However, understanding the role of the residual chalcogen in the reconstructed layer is lacking in detail, and the corresponding catalytic mechanism remains controversial. Here, taking Cu 1− x Co x S as a platform, we explore the regulating effect and existence form of the residual S doped into the reconstructive layer for oxygen evolution reaction (OER), where a dual-path OER mechanism is proposed. First-principles calculations and operando 18 O isotopic labeling experiments jointly reveal that the residual S in the reconstructive layer of Cu 1− x Co x S can wisely balance the adsorbate evolution mechanism (AEM) and lattice oxygen oxidation mechanism (LOM) by activating lattice oxygen and optimizing the adsorption/desorption behaviors at metal active sites, rather than change the reaction mechanism from AEM to LOM. Following such a dual-path OER mechanism, Cu 0.4 Co 0.6 S-derived Cu 0.4 Co 0.6 OSH not only overcomes the restriction of linear scaling relationship in AEM, but also avoids the structural collapse caused by lattice oxygen migration in LOM, so as to greatly reduce the OER potential and improved stability.
研究领域:
材料科学
·
电化学
·
催化反应
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Xiangrui Chen,Chengdeng Wang,Haofeng Shi,Jinpeng Li,Jiashuai Wang,Zhi Wang,Zhaokun Wang,Liyuan Bai,Yan Gao,Guanyong Wang,Yousong Gu,Xiaoqin Yan
Referred to as potential options for anodes in sodium-ion batteries, transition metal chalcogenides (TMCs) exhibit unique electronic and structural characteristics. However, the limited electrical conductivity inherent in them poses a hindrance to electron transport, while their tendency to undergo volumetric expansion during cycling exacerbates structural instability, thereby imposing constraints on practical applications. Herein, a dual molten salt etching strategy followed by a sulfidation-selenidation process was employed to anchor multi-component sulfides FeS 2 /NiS and FeSe/NiSe onto conductive Ti 3 C 2 T x MXene, achieving superior sodium storage performance. Owing to the enhanced Na⁺ and faster kinetics of electronic transport, mechanical strain is effectively reduced, and strong covalent interactions are formed at the interface, significant enhancement in the cycling stability is observed for the anodes of Ti 3 C 2 T x @FeS 2 /NiS and Ti 3 C 2 T x @FeSe/NiSe (with specific capacities of 309.4 and 162.6 mAh g −1 , respectively, after 1000 cycles at 5 A g −1 , with a former retention capacity rate that can reach as high as 87.8 %) and exceptional rate performance (252.1 and 207.8 mAh g −1 , respectively, at 8 A g −1 ). Furthermore, full cells assembled by pairing Ti 3 C 2 T x @FeS 2 /NiS and Ti 3 C 2 T x @FeSe/NiSe with Na 3 V 2 (PO 4 ) 3 cathodes also demonstrate excellent cycling performance, with both configurations achieving up to 500 cycles. The suggested approach enables efficient utilization of byproducts from Lewis acidic etching, expanding possibilities for synthesizing high-performance anodes in sodium-ion batteries consisting of MXene and TMCs.
研究领域:
材料科学
·
电化学
✓ 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）