JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Jie Xu,Xueying Yang,Yongjin Zou,Luping Zhu,Fen Xu,Lixian Sun,Cuili Xiang,Jian Zhang
MXenes have a broad application in electrochemical energy storage. However, the smooth surface of high-density MXenes makes it difficult to stabilize the anchored active material. In this study, ultrathin Ti 3 C 2 MXenes were doped with a high density of NiMoS 4 nanoparticles with the assistance of dopamine (DA). DA was adsorbed by the Ti 3 C 2 surface (Ti 3 C 2 -DA) to form a negatively charged layer, which was beneficial for the enrichment of metal ions. NiMoS 4 was anchored to Ti 3 C 2 -DA via a hydrothermal reaction . The resultant Ti 3 C 2 -DA-NiMoS 4 heterostructure increased the exposure of NiMoS 4 active sites, and reduced the decrease in specific capacitance caused by volume changes. Consequently, Ti 3 C 2 -DA-NiMoS 4 exhibited excellent electrochemical performance with a high specific capacitance of 1288 F g −1 at 1 A g −1 . In addition, an asymmetric supercapacitor based on a Ti 3 C 2 -DA-NiMoS 4 positive electrode achieved a high energy density of 40.5 Wh kg −1 at 810 W kg −1 , and demonstrated excellent cycling stability (capacitance retention of 89% after 9000 cycles at 10 A g −1 ). These results demonstrate that the Ti 3 C 2 -DA-NiMoS 4 heterostructure is a prospective candidate material for high-performance supercapacitors.
研究领域:
材料科学
·
电化学能源存储
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Li Shao,Xing Qian,Xiaoying Wang,Hongmei Li,Rucai Yan,Linxi Hou
Highly efficient and low-cost electrocatalysts are essential for producing hydrogen through water electrolysis. Here ternary compounds CoMoS 4 and NiMoS 4 were synthesized by a one-step reaction, and further CoMoS 4 -H and NiMoS 4 -H were obtained by heating the above two samples under Ar atmosphere. The above four materials both show uniformly small irregular nanoparticles. Each element of the four materials exhibits semblable valence without distinct difference of which S was −2, Mo was +6, Ni and Co were +2. We firstly use the above ternary materials as advanced electrocatalysts for HER over a wide pH range, of which CoMoS 4 -H displays the best performance with a low onset overpotential at 8 mV in 1.0 M KOH and 83 mV in 0.5 M H 2 SO 4 . NiMoS 4 -H also shows excellent performance with a low onset overpotential at 26 mV in 1.0 M KOH and 160 mV in 0.5 M H 2 SO 4 . In 1 M phosphate buffer solution, CoMoS 4 -H and NiMoS 4 -H exhibit onset overpotential at overpotential of 122 mV and 152 mV, respectively. These results indicate that the combination of earth-abundant sulfur, cobalt (or nickel) and molybdenum elements can provide highly active electrocatalysts for HER over a wide pH range.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2022
·
IF 3.806
Rui Xiong,Xiangjing Zhang,Xiaoyang Xu,Zhenni Zhang,Xuefang Tian,Chunyu Wang
The ternary reduced graphene oxide (rGO)/polyaniline (PANI)@NiMoS 4 composite with the three-dimensional hierarchical structure was constructed by the in-situ chemical oxidation polymerization of aniline on GO surface, followed by the hydrothermal treatment . The grafted PANI cannot only provide the additional Faradaic redox reaction , but also support the rGO and NiMoS 4 , alleviating the self-stacking phenomenon for many ion transfer channels. The optimized rGO/PANI@NiMoS 4 exhibits the high specific capacity of 194 mAh/g at 0.75 A/g. Meanwhile, the corresponding rGO/PANI@NiMoS 4 //AC asymmetric supercapacitor also exhibits the high energy density of 30.75 Wh/kg at 1500 W/kg, and good cycle stability with capacity retention of 93 % after 6000 cycles. These satisfactorily electrochemical performances of rGO/PANI@NiMoS 4 composites reveal the potential supercapacitor application. This work provides an efficient way to increase the capacity of NiMoS 4 related electrode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2021
·
IF 3.315
Xiaoyang Xu,Linan Liang,Zhenni Zhang,Rui Xiong,Xiangjing Zhang,Ying Zhao,Shanlin Qiao,Yantao Zhang
Considering the connected function, high conductivity and electrochemical double layer capacitance properties of reduced graphene oxide (RGO), the NiMoS 4 nanosheets were anchored on RGO coated Ni foam by a facile hydrothermal method to obtain the NiMoS 4 @RGO/Ni foam self-supporting electrode without the extra binders. Surprisingly, the prepared NiMoS 4 @RGO/Ni foam with unique hierarchical lamellar structure can exhibit the high specific capacity of 408 mAh/g at 0.5 A/g, which can be compared with all relevant NiMoS 4 reports. In view of the good supercapacitor performances and practical application feasibility of NiMoS 4 @RGO/Ni foam, the NiMoS 4 @RGO/Ni foam//AC hybrid supercapacitor device also can show the comparable energy density of 67.4 Wh/kg at 562.5 W/kg to that of all NiMoS 4 based hybrid supercapacitors , as well as the good cycle stability. This work can indeed improve the supercapcaitor properties of NiMoS 4 based materials, and be also treated as an important attempt of NiMoS 4 based materials for supercapacitors .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Jinbo Yang,Shengqi Lin,Chunhe Li,Kuankuan Ren,Qiufeng Ye,Weidong Dou
Utilizing photocatalytic technology to efficiently convert biomass-derived compounds into value-added chemicals and release hydrogen gas can effectively address energy and environmental issues. For this purpose, we fabricated a series of NiMoS4/Zn0.6Cd0.4S nanocomposites through a simple two-pot hydrothermal treatment. Dexterously, the photoexcited electrons and holes can be simultaneously utilized to participate in a photocatalytic redox reaction, effectively achieving the oxidation of furfuryl alcohol while cooperating with H2 evolution. The hydrogen evolution rate of 10%-NiMoS4/Zn0.6Cd0.4S nanocomposite in 1.50 vol % furfuryl alcohol aqueous solution is as high as 289.5 μmol·h–1, which is approximately 2895 and 41 times higher than that of pure NiMoS4 and Zn0.6Cd0.4S, respectively. Meanwhile, after 13 cycles of photocatalytic reaction, the conversion efficiency and selectivity of converting furfuryl alcohol to furfural are 68.5% and 94.0%, respectively. This photocatalyst also shows high photocurrent, low impedance, and efficient photogenerated carrier separation and transport properties, which can be attributed to the establishment of an ohmic junction between NiMoS4 and Zn0.6Cd0.4S. It is anticipated that this work can provide inspiration for the effective conversion of biomass-derived platform chemicals into high-value chemicals through visible-light-driven photocatalytic technology.
研究领域:
能源科学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Xiaoyang Xu,Linan Liang,Qianqian Liu,Xiangjing Zhang,Ying Zhao,Shanlin Qiao
The sponge-like NiMoS 4 nanosheets were in-situ induced/grown on self-supported Ni foam, which can be directly applied as supercapacitor electrode without tedious preparation process and charge transfer limited binders. The obtained NiMoS 4 /Ni foam electrode can exhibit the high specific capacity of 233 mA h/g at 0.75 A/g, owing to the uniform three-dimensional sponge-like network shape with favorable electrons/ions transfer channels. In addition, the assembled NiMoS 4 /Ni foam//AC asymmetric supercapacitor can possess the energy density of 32 Wh/kg and good stability of 84 % capacity retention after 8000 cycles. This work cannot only provide a new preparation method of NiMoS 4 on Ni foam without introducing nickel sulfides, but also exhibits the high-performance NiMoS 4 /Ni foam supercapacitor electrode.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Min Wei,Xudong Wu,Yingbang Yao,Shuhui Yu,Rong Sun,ChingPing Wong
NiMoS4 with an amorphous phase was deposited on the surface of reduced graphene oxide (rGO) to form a NiMoS4–rGO composite through a facile hydrothermal process. To maximize the loading of active materials, interdigitated electrodes were patterned on a three-dimensional (3D) nickel foam using direct-laser cutting. The active material (NiMoS4–rGO) was applied into the interdigitated nickel foam collector, which exhibits a high capacitance (1000 F g–1 at 1 A g–1) in an ionic liquid electrolyte and superior cycling performance (specific capacity retention of 96.05% at 8 A g–1over 5000 cycles). Owing to the synergistic effect of three-dimensional nickel foam with the amorphous structured NiMoS4–rGO, the coplanar 3D micro-supercapacitor exhibits a high energy density of 69.51 W h kg–1 at a power density of 849.99 W kg–1, as well as an exceptional cycle performance (94.06% retained over 7000 cycles). The comprehensive performance of the coplanar hybrid supercapacitor developed in this study is superior in comparison with most of the previously reported ones.
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Xiaoyang Xu,Linan Liang,Xiangjing Zhang,Xuteng Xing,Ying Zhao,Jianping Gao,Aijia Wei
The energy storage material NiMoS 4 with Faradaic redox reactions was grown on the reduced graphene oxide (RGO) lamella by a facile hydrothermal method , considering that RGO with the high surface area and conductivity can provide some channels for charge/ion transfer and active sites for redox reactions. The optimal NiMoS 4 /RGO composite can exhibit the high specific capacity of 124 mA h/g at 1 A/g, and be selected as positive electrode materials of hybrid supercapacitors . The assembled NiMoS 4 /RGO//activated carbon hybrid device possesses a high current density of 63 Wh/kg at a power density of 1125 W/kg and good cyclic stability with the capacity retention of 81 % after 5000 cycles. The prepared NiMoS 4 /RGO composite is a promising electrode material for supercapacitors .
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
NANO
·
2019
·
IF 1.293
Wen Yang,Bin Xia,Jiacheng Lu,Peizhi Yang,Xiaobo Chen
Novel hierarchical porous NiMoS 4 microspheres with high electrochemical performance was successfully prepared using a facile one-step hydrothermal method. The dual application of porous NiMoS 4 microspheres in energy harvesting and storage (i.e., dye-sensitized solar cells (DSSCs) and supercapacitors (SCs), respectively) is explored. In contrast to NiS 2 nanosheets, MoS 2 nanosheets and Pt counter electrodes (CEs), the NiMoS 4 microspheres CE demonstrated the lowest charge transfer resistance and highest electrocatalytic activity for the I 3 − /I − redox couple reaction. The NiMoS 4 -based DSSC showed a higher power conversion efficiency (8.9%) even than that of Pt-based DSSC (8.7%) under simulated standard global AM 1.5 G sunlight (100 mW cm − 2 ). As an electroactive material for SCs, the assembled NiMoS 4 //AC asymmetric supercapacitor showed excellent specific capacitance (118.7 F g − 1 at 1 A g − 1 ) , high energy density of 42.2 Wh kg − 1 (with a power density of 799.2 W kg − 1 ) , and superior cycling durability with a specific capacitance retention of 79.5% after 9000 cycles at 3 A g − 1 .
研究领域:
材料科学
·
能源技术
·
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）