JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jiaying Shen,Yefan Liu,Qianqiao Chen,Wanchin Yu,Qin Zhong
Rational design and construction of bifunctional heterostructure electrocatalysts with high-conductivity and more active sites is imperative for water splitting. Herein, based on the tunable property of layered double hydroxide laminates cations, topological transformation technology and template confine method, a series of high-performance bifunctional catalysts composed of transition metal doping NiCo 2 S 4 (MNiCoS 4 , M = Cu, Fe, Zn, Mn) and 1T-MoS 2 were in-situ fabricated on nickel foam. In particular, CuNiCoS 4 /1T-MoS 2 exhibits an ultralow overpotential of 163 mV at 50 mA cm −2 for oxygen evolution reaction (OER) and favorable hydrogen evolution reaction activity. The two-electrode system requires only 1.52 V to attain a current density of 10 mA cm −2 . To the best of our knowledge, its OER electrocatalytic activity far exceed state-of-art catalysts reported. The outstanding performance of this series of catalysts can be attributed to two aspects. First, the highly conductive 1T-MoS 2 can facilitate electron transfer , and second, the defect-rich heterostructure can effectively regulate the electronic structure of the active metal and expose abundant active sites. This work provides a valuable strategy for developing high activity electrocatalysts for efficient water splitting.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 48
·期 3
·1372-1380
·
IF 3.3
Peng Sun,Menglu Zhang,Yue Liu,Jiahua Zhao,Jiawei Yang,Yufeng Wang,Yongfei Wang,Zhiqiang Zhang
Lithium-ion batteries have been regarded as a promising power source for various electronic devices. Compared to the traditional graphite anode material, MoSe2 possesses a higher theoretical capacity. However, MoSe2 anode materials are limited by low electronic conductivity and large volume changes during cycling. This study reports 1T–2H MoSe2/N-doped rGO nanocomposites, fabricated through a hydrothermal method. The 1T–2H MoSe2/N-doped rGO electrode delivers a high reversible capacity of 483.6 mA h g−1 after 1000 cycles at 1000 mA g−1. It also possesses a high reversible capacity of 474.9 mA h g−1 even at a current density of 2000 mA g−1, thus, making it an important potential lithium-ion battery anode.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 35
·16531-16538
·
IF 3.3
Yulong Zheng,Hui Zhang,Pei Han,Zhaoshun Zhang,Xueqin Zuo,Qun Yang,Huaibao Tang,Shaowei Jin,Guang Li
Solar distillation can directly produce clean water from non-potable water resources using solar energy and has great promise in desalination systems. However, the improvement of evaporation efficiency through the selection and optimization of suitable candidate materials is still a challenging problem. In this paper, by implementing a customized insulating floating layer and establishing an interfacial evaporation system, we have achieved a successful experiment demonstrating the potential to improve the efficacy of solar steam generation. This system is created by growing 1T-2H mixed-phase molybdenum disulfide composites on the carbonized ZIF8 surface. In this study, the treated composites were well integrated with the thermal insulating floating layer to achieve a stable interfacial structure for photothermal conversion. Furthermore, the cotton threads, known for their great absorbency, created an unhindered pathway for water flow, making it easier for steam to be generated and circulated. Using the above system, under one solar illumination condition, a significant evaporation rate of 1.57 kg m−2 h−1 was attained. The solar steam conversion efficiency of this interfacial heating system under one solar illumination condition was 94.4%. In addition to demonstrating that interface engineering is effective for solar steam production, this work offers a simple and economical water purification method.
研究领域:
材料科学
·
能源技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Small Methods
·
2020
·Vol. 4
·期 9
·2000353
·
IF 12.13
Mingshan Wang,Hua Yang,Kangqi Shen,Hao Xu,Wenjie Wang,Zhenliang Yang,Lei Zhang,Junchen Chen,Yun Huang,Mingyang Chen,David Mitlin,Xing Li
A stable lean-electrolyte operating lithium–sulfur (Li–S) battery based on a cathode of Li 2 S in situ electrocatalytically deposited from L 2 S 8 catholyte onto a support of metallic molybdenum disulfide (1T-MoS 2 ) on carbon cloth (CC) is created. The 1T-MoS 2 significantly accelerates the conversion Li 2 S 8 catholyte to Li 2 S, chemically adsorbs lithium polysulfide (LiPSs) from solution, and suppresses crossover of the LiPSs to the anode. These experimental findings are explained by density functional theory calculations that show that 1T-MoS 2 gives rise to strong adsorption of polysulfides on its surface and is electrocatalytic for the targeted reversible Li–S conversion reactions. The CC/1T-MoS 2 electrode in a Li–S battery delivers an initial capacity of 1238 mAh g −1 , with a low capacity fade of only 0.051% per cycle over 500 cycles at 0.5 C . Even at a high sulfur loading (4.4 mg cm −2 ) and low electrolyte/S (E/S) ratio of 3.7 µL mg −1 , the battery achieves an initial reversible capacity of 1176 mA h g −1 at 0.5 C , with 87% capacity retention after 160 cycles. The post 500 cycles Li metal opposing 1T-MoS 2 is substantially smoother than the Li opposing CC, with XPS supporting the role of 1T-MoS 2 in inhibiting LiPSs crossover.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Frontiers in Energy Research
·
2025
·
IF 2.4
Tianjiao Huang,Wu Xia,Fnu Joshua,Vaishnavii Subbiah Ponnusamy,Qipeng Zhang,Sachin Kumar,Ao Yu
Rational interfacial engineering is crucial to designing non-precious electrocatalysts for the hydrogen evolution reaction (HER). Here we report a Cu3N/1T-MoS2 heterojunction in which ultrathin 1T-MoS2 nanosheets are conformally grown on conductive p-type Cu3N nanocubes. Spectroscopy and microscopy reveal intimate lattice contact and interfacial strain, while XPS indicates charge redistribution across the junction. In 0.5 M H2SO4, the optimized 1:1 composite delivers an overpotential of 387 mV at 50 mA cm−2 and a Tafel slope of 57 mV dec−1, outperforming both constituents (MoS2 ≈ 456 mV; Cu3N inactive at this current density). Continuous operation for 150 h demonstrates excellent acid stability. Electrochemical impedance and double-layer capacitance analyses show the lowest charge-transfer resistance and the highest electrochemically active surface area among all samples (Cdl = 103.6 mF cm−2), corroborating rapid electron transport and abundant accessible sites. The activity enhancement arises from a p–n heterojunction with a built-in field that promotes directional electron flow to MoS2 active edges, together with strain-induced defect exposure. This work identifies Cu3N as an effective platform to stabilize conductive MoS2 and provides design rules for interface-engineered HER catalysts.
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产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2021
·Vol. 11
·期 24
·7914-7921
·
IF 6.119
Qiuzhong Li,Lin Huang,Wenxin Dai,Zizhong Zhang
The 1T/2H heterophase junction MoS2 2D nanolayer for assembly into microspheres were fabricated through a simple one-step hydrothermal synthesis. These unique junction structure MoS2 microspheres facilitate the separation of the electron–hole between different phases for forming the built-in electric field in the nanolayer. The content of 1T/2H heterophase junctions could be effectively regulated by simple changing the molar ratio of the Mo/S source in the synthesis processes. The prepared MoS2 microspheres as a photocatalyst enable the effective hydrogen production from water. The hydrogen production activity of the photocatalyst is dependent on the content of the heterophase junctions. The hydrogen production rate was the highest up to 22.4 μmol h−1 on the optimal sample MS (1 : 2).
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Xiaofeng Li,Qiuxiang Zhang,Ran Wang,Jinzhen Huang,Jiecai Han,Tai Yao,Xianjie Wang,Sida Jiang,Bo Song
To enable fast sodium ion battery charging in a wide temperature range, the local structures of anode materials must be optimized to reduce the Na + diffusion resistance at the interface and inside the electrode. Guided by theoretical predictions, isotropic ReSe 2 with a 1 T phase crystal structure (1 T ReSe 2 ) is developed herein to exhibit enhanced electrical conductivity for efficient charge transfer compared to the 1 T' ReSe 2 phase. Enabled by its metallic characteristic and longer Re─Se bonds, 1 T ReSe 2 achieves a lower Na + diffusion barrier and lower adsorption energy than 1 T' ReSe 2 , facilitating faster Na + storage reaction kinetics. Operando spectroscopy characterization confirms that the 1 T ReSe 2 electrode can directly produce Na x ReSe 2 without undergoing a significant phase transition. This inhibits volume expansion, leading to improved cycling stability. As a result, 1 T ReSe 2 exhibits good fast-charging performance in a wide temperature range. A capacity of 197 mAh g −1 @20 A g −1 is maintained after 8000 cycles at room temperature, and a capacity of 136 mAh g −1 @1 A g −1 (corresponding to a capacity retention rate of 60%) is retained after 465 cycles at −40°C.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 6
·491
·
IF 2.8
Chen Yongbo,Chen Zhiyue,Xiang Minghui,Zhou Yi,Zhang Jin
The crucial oxidant in photocatalytic degradation of dye is the photogenerated reactive oxygen species (ROS) but many photocatalytic processes suffer from low ROS generation efficiency. In this paper, 1T-MoS 2 quantum dot modified flower-like BiOBr nanocomposites were synthesized to forming a Type-II heterojunction. As-prepared 1T-MoS 2 @BiOB composites showing excellent activity for degradation of rhodamine B (RhB) under visible light, BiOBr loaded with 0.2wt% 1T-MoS 2 quantum dots has achieved 96.9% efficiency within 18 min. Such outstanding photocatalytic activity is attributed to the flower-like structure and heterojunction between 1 T-MoS 2 and BiOBr which provide a fast transfer pathway for excitons and promote the activation of molecular oxygen. In addition, a possible catalytic mechanism was proposed. This work will provide new insight for design and fabrication of cheaper and more effective photocatalysts for molecular oxygen activation in environmental remediation.
研究领域:
材料科学
·
光催化
·
环境修复
·
纳米技术
·
能源与催化
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yingjie Cheng,Li He,Dong Mao,Xuejian Shi,Chunzhong Wang,Fengxue Duan,Pengyan Xue,Yizhan Wang,Yingjin Wei
The active electronic states in 1T-MoS 2 are highly desirable for catalyzing polysulfides conversion. However, stable 1T-MoS 2 is difficult to produce using common approaches. Herein, V uniformly doped in-plane 1T-2H heterostructured MoS 2 nanosheets (V-MoS 2 ) are prepared by a facile hydrothermal method with a polyoxometalate precursor containing periodic Mo and V atomic arrangement. The doping of V induces the phase transition from semiconducting 2H-MoS 2 to metallic 1T-MoS 2 and stabilizes the resulted 1T phase. Importantly, the incorporation of V not only modifies the surface electronic property of MoS 2 , enhancing the active site density, but also improves the adsorption of polysulfides and the catalytic efficiency for sulfur redox reactions. With these advantages, the Li-S batteries using V-MoS 2 electrocatalyst achieve accelerated reaction kinetics and superior electrochemical performance. When the S loading of the cathode is 5.41 mg cm −2 , a favorable discharge capacity of 4.98 mAh cm −2 is obtained with satisfying cycle stability. This work provides an efficient atomic engineering approach for the design of high performance electrocatalyst for Li-S batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2020
·Vol. 8
·期 30
·6451-6458
·
IF 5.344
Daomeng Liu,Daquan Wang,Xunan Jing,Xiaoping Zhao,Duo Xi,Dongfeng Dang,Lingjie Meng
Nanozymes are a new generation of artificial enzymes that address the limitations of natural enzymes, with numerous reports on the development of high performance nanozymes for various applications. Herein, the phase regulation of network-like MoSe2 from the metal 1T phase to semiconductor 2H phase was achieved under different reaction conditions by a facile but efficient microwave-assisted solvothermal method. The coexisting 1T/2H-MoSe2 with edge enriched and defective nanostructures showed great enhancement of the peroxidase-like properties. This high enzymatic activity may arise from optimized active sites of 1T/2H-MoSe2, effectively leading to a rapid charge transfer within the substrate. In addition, chitosan functionalization not only greatly improves the dispersion stability of MoSe2, but also significantly increases its peroxidase-like activity, probably due to its enhanced affinity to hydrogen peroxide (H2O2). Based on these results we have established a highly sensitive colorimetric assay for the detection of H2O2 and glucose in human serum.
研究领域:
材料科学
·
生物催化
·
医学检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 35
·期 6
·2208615
·
IF 32.086
Yihui Li,Xingfang Dong,Zewen Xu,Menglei Wang,Ruofei Wang,Juan Xie,Yangjian Ding,Pengcheng Su,Chengying Jiang,Xingmin Zhang,Liyu Wei,Jing-Feng Li,Zhaoqiang Chu,Jingyu Sun,Cheng Huang
Transition metal dichalcogenides (TMDs) are regarded as promising cathode materials for zinc-ion storage owing to their large interlayer spacings. However, their capabilities are still limited by sluggish kinetics and inferior conductivities. In this study, a facile one-pot solvothermal method is exploited to vertically plant piezoelectric 1T MoSe 2 nanoflowers on carbon cloth (CC) to fabricate crystallographically textured electrodes. The self-built-in electric field owing to the intrinsic piezoelectricity during the intercalation/deintercalation processes can serve as an additional piezo-electrochemical coupling accelerator to enhance the migration of Zn 2+ . Moreover, the expanded interlayer distance (9–10 Å), overall high hydrophilicity, and conductivity of the 1T phase MoSe 2 also promoted the kinetics. These advantages endow the tailored 1T MoSe 2 /CC nanopiezocomposite with feasible Zn 2+ diffusion and desirable electrochemical performances at room and low temperatures. Moreover, 1T MoSe 2 /CC-based quasi-solid-state zinc-ion batteries are constructed to evaluate the potential of the proposed material in low-temperature flexible energy storage devices. This work expounds the positive effect of intrinsic piezoelectricity of TMDs on Zn 2+ migration and further explores the availabilities of TMDs in low-temperature wearable energy-storage devices.
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 Materials Chemistry A
·
2023
·Vol. 11
·期 42
·22786-22796
·
IF 11.9
Zhao Wang,Zongwei Guo,Jiajun Luo,Xuesong Wang,Ming Li,Yuhui Ao,Lin Jin
The capacitance, conductivity, and ion migration ability of electrode materials are key factors affecting the energy density of supercapacitors (SCs). The synergistic application of porous carbon and two-dimensional (2D) materials can solve these problems. In this study, we successfully constructed porous B, N co-doped carbon (BNC) scaffolds on the surface of carbon cloth (CC), and vertically ordered 1T-2H MoS2 (1T-2H MS) nanosheets with large interlayer spacing were then assembled on their surfaces, providing highly distributed active sites and large specific surface areas, and rapid charge transfer capability for high-capacity electrode materials. Refined structural characterization and density functional theory (DFT) calculations indicated that 1T-2H MS@BNC/CC heterostructures have reasonable structural/phase design advantages, with a conversion rate of up to 77%. Benefiting from the structure and metal phase advantages, the 1T-2H MS@BNC/CC electrode exhibited a good electrochemical storage mechanism under alkaline conditions, with an ultrahigh-performance of 994.3 F g−1 at a current density of 0.5 A g−1, and cycling stability was maintained at 80% even after 6000 cycles. Furthermore, the resulting 1T-2H MS@BNC/CC//AC/CC asymmetrically flexible, all-solid-state supercapacitors (FASCs) achieved a dramatically high energy density of 92.3 Wh kg−1 at 349.7 W kg−1 and remarkable cycling lifespan (∼91% retention over 1000 cycles). Surprisingly, a single FASC could successfully activate the electronic clock for 15 minutes, and two FASCs in a series could light up the LED for 10 minutes. The outstanding FASCs exhibited perfect structural and durable stability upon bending, indicating their superiority in flexible energy storage devices.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 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）