NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 35
·15470-15482
·
IF 2.7
Qingtao Wang,Xiaoling Zhou,Hanbin Jin,Lulu Guo,Yanxia Wu,Shufang Ren
As one of the effective methods for hydrogen production, water electrolysis has been widely studied. However, the high overpotential challenge faced by the anode and the limitation of the electron transfer rate in this process significantly inhibit the efficiency of hydrogen production, which has become the main obstacle to overcome in the current research. The use of thermodynamically more favorable organic compounds to oxidize at the anode instead of traditional water oxidation (OER) is an effective strategy to optimize the process of electrolytic hydrogen production. In this paper, Ni3S2 catalysts co-doped with non-noble metals Li and Mn were prepared on nickel foam and used for the glycerol oxidation reaction (GOR) coupled with the hydrogen evolution reaction (HER). In alkaline solution, Li, Mn–Ni3S2@NF exhibits good GOR and HER performance. Specifically, overpotentials of 1.58 V vs. RHE and 0.54 V vs. RHE are required to reach a current density of 200 mA cm−2, respectively, and the catalytic performance of the material remains good after a long-term test. Li, Mn–Ni3S2@NF as a bifunctional catalytic material oxidizes glycerol to formate, and its faradaic efficiency (FE) is as high as 91%, and the volume of hydrogen production is close to the theoretical value. In addition, the replacement of the OER by the GOR can reduce the energy consumption by about 17.44%.
研究领域:
能源材料科学
·
电催化
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Bin Tian,Jinlong Lei,Jiahai Wang
A large surface area of catalytic sites and low electric resistance are desirable properties for electrocatalysts that lower the overpotential required for electrochemical reactions, such as the hydrogen evolution reaction (HER), in this study. In the presence of polyoxometalate (POM) and triblock copolymer pluronic (P123) as a hybrid soft template, the hydrothermal sulfurization of nickel foam leads to the formation of a hollow microsphere, assembled from the Ni3S2 motif. Sonication for preparing POM+P123 hybrids, while adjusting the POM content, is an effective strategy for synthesizing a Pt-like electrocatalyst with excellent hydrogen evolution efficiency. The reason is that both sonication and optimal POM content can simultaneously enhance the electroactive surface area and electron transfer of the Ni3S2 electrocatalyst. Adopting the optimal conditions, the three-dimensional porous network, composed of Ni3S2 hollow microspheres on the nickel foam, shows that the HER in an alkaline medium requires only 77 mV overpotential for a current density of 10 mA cm–2, with a robust long-term stability during a 25 h test. The performance at a large current density outperforms the current benchmark electrocatalyst (Pt) for HER.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Qian Zhao,Jianlong Gou,Mengxinyue Zhang,Hong Chen,Guiyu Zhu,Xiaoxiao Zhang,Yanan Xue,Yanping Liu,Jianzhi Wang
Developing sulfur-containing one-dimensional (1D) nanocatalysts with high active surface area and stability remains a significant challenge for achieving high-performance oxygen evolution reaction (OER) catalysts. In this study, a novel 1D FeS-Ni 3 S 2 nanorod array covered with interwoven nanosheets was synthesized on nickel foam (NF) using a solvothermal process. A rigid segment-containing polysulfide (Poly(S- r -DIB)) was employed as a sulfur source and in situ intercalator, enabling efficient sulfidation and structural formation. The resulting FeS-Ni 3 S 2 /NF nanocatalyst demonstrated outstanding OER performance, achieving a low overpotential of 215 mV at 50 mA cm - ² and a low Tafel slope of 51 mV dec - ¹ . The catalyst exhibited remarkable stability, retaining over 85 % of its original activity after prolonged testing. Furthermore, in a two-electrode configuration, the catalyst reached a current density of 20 mA cm - ² at a low applied voltage of 1.41 V. This work introduces a new approach for fabricating sulfur-containing 1D nanomaterials with superior catalytic activity, paving the way for advancements in water splitting and sustainable hydrogen energy production.
研究领域:
材料科学
·
电催化
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 42
·21770-21779
·
IF 6.895
Bohan An,Jiacheng Li,Xiaochao Wu,Wanqing Li,Yongliang Li,Lingna Sun,Hongwei Mi,Qianling Zhang,Chuanxin He,Xiangzhong Ren
To improve the high reversibility of lithium–air batteries, an air electrode needs to have excellent electrochemical performance and spatial structure. Ni3S2 nanoparticles are loaded onto an N,S-doped pearl chain tube (N,S-PCT) by a method called quasi-chemical vapor deposition (Q-CVD). Additionally, N and S are doped during the synthesis process, thereby forming an ideal pipe rack-like structure. The large amount of space in the tube rack can provide sufficient storage to act as a buffer for the discharge products, and the interconnected tubes can effectively promote the dispersion of O2 and electrolyte. The addition of Ni3S2 nanoparticles effectively reduces the charge transfer resistance, thereby increasing the electron mobility of the cathode. Ni3S2@N,S-PCT cathodes effectively improve the cycling and high-rate performance of lithium–air batteries, demonstrating an ultrahigh discharge capacity of 16 733.7 mA h g−1 at a current density of 400 mA g−1 and an ultrahigh discharge capacity of 5088.1 mA h g−1 at a current density of 1000 mA g−1. When the cut-off capacity is 1000 mA h g−1, the battery with the Ni3S2@N,S-PCT-800 electrode can achieve cycling stability for 148 cycles. This research provides a new solution for the design of lithium–air batteries with high electrocatalytic performance.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Wei Wen,Xiaoqiang Du,Xiaoshuang Zhang
Replacing fossil fuels by electrocatalytic water splitting for producing hydrogen and oxygen is one of the most promising ways to solve the energy crisis and environmental pollution. In this work, a series of M doped N-Ni 3 S 2 (M = Cu, Fe, Co and Ce) material was firstly synthesized and in situ grown on nickel foam substrate by a typical two-step hydrothermal synthesis method. Two probe reactions, water oxidation and urea oxidation, were selected to investigate the catalytic performance of these materials. What is noteworthy is that the Fe doped N-Ni 3 S 2 material exhibits superior water oxidation properties with requiring only 270 mV of overpotentials to drive current densities of 100 mA cm −2 , which is one of the best activities reported so far. After a long time of durability measurement, the current density of the Fe doped N-Ni 3 S 2 material will be attenuated, suggesting that the surface of the material will be in situ oxidized to oxide or hydroxide, which is the true active species. For urea oxidation, the Co doped N-Ni 3 S 2 material shows superior catalytic performance with requiring only 1.36 V potentials to drive 100 mA cm −2 current densities. Density functional theory (DFT) calculation shows that different adsorption energy of water for N-Ni 3 S 2 , N-Cu-Ni 3 S 2 , N-Fe-Ni 3 S 2 and N-Co-Ni 3 S 2 leads to the different catalytic activity. Experimental results demonstrate that the improved catalytic performance is assigned to faster electron transfer rates, exposure of abundant active center and better conductivity due to N and cation doping. This work provides new lessons for doping engineering for water splitting reactions.
研究领域:
材料科学
·
能源化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Na Wang,Gaoyi Han,Yunzhen Chang,Wenjing Hou,Yaoming Xiao,Honggang Li
With development of flexible electronics, investigation on flexible supercapacitors is becoming more and more important. How to easily prepare flexible electrodes with high specific capacitance is still challenging. Here, Ni 3 S 2 -based flexible positive electrode is obtained by hydrothermally treating the continuous Ni film which has been chemically deposited on flexible organic fibrous substrates with thioacetamide. The structural character, electrochemical properties and the influences of reduced graphene oxide on the microstructure and properties of the electrode are investigated in detail. Results reveal that the formed Ni 3 S 2 shows a neural network-like structure. The presence of reduced graphene oxide makes the Ni 3 S 2 size small, improves the dispersibility of Ni 3 S 2 and increases conductivity of the electrode. The specific capacitance of the optimized electrode can reach to 2.3 F cm −2 (990.1 F g −1 based on the mass of reduced graphene oxide and Ni 3 S 2 ). In addition to the good flexibility, the asymmetric supercapacitors assembled by using Ni 3 S 2 -based positive electrode and reduced graphene oxide negative electrode exhibit high capacitance (680.5 mF cm −2 or 81.9 F g −1 ), excellent cycle stability (retaining 86.1% of the initial capacitance after 5000 cycles) and high energy density (29.1 Wh kg −1 ). This strategy may provide new approach for nickel-based flexible electrodes.
研究领域:
材料科学
·
电化学
·
纳米技术
·
储能
✓ 已验证
DOI
高影响因子
ANALYST
·
2019
·Vol. 144
·期 16
·4925-4934
·
IF 4.019
Palanisamy Kannan,Fangshuai Chen,Huasheng Jiang,Hui Wang,Rongfang Wang,Palaniappan Subramanian,Shan Ji
Designing highly active electrode is important for the fabrication of electrochemical sensing platforms, and core–shell nanostructures with large specific surface areas and ease of accessibility are effective probes for the detection of biomolecules. In this work, we report the development of hierarchical core–shell Ni3S2/NiMoO4 nanowires on a nickel foam substrate (Ni–Ni3S2/NiMoO4) as a non-noble metal catalyst electrode for the electrochemical oxidation of glucose in alkaline electrolyte. As an electrochemical sensor for glucose detection, the fabricated hierarchical Ni–Ni3S2/NiMoO4 core–shell nanowires display an enhanced catalytic response, a fast response time of 1 s with a limit of detection (LOD) of 0.055 μM (S/N = 3), and a higher sensitivity of 10.49 μA μM−1 cm−2. Unlike Ni3S2 or NiMoO4 electrodes, the observed superior catalytic activity towards glucose is mainly due to the promotional effect of NiMoO4 nanosheets on the Ni3S2 nanowires, which can increase the large active surface area and generate numerous active sites within and on the surface walls of the nanowire structures. The developed Ni–Ni3S2/NiMoO4 nanowire electrode can selectively detect glucose in the presence of other carbohydrates, such as fructose, sucrose, lactose, maltose, galactose, mannose, and xylose, indicating potential anti-interference properties. The Ni–Ni3S2/NiMoO4 nanowire electrode is highly stable for reuse and its practical application is demonstrated using real blood serum samples. These results demonstrate that hierarchical core–shell Ni3S2/NiMoO4 nanowires show potential for application in the development of low-cost applied glucose sensors.
研究领域:
生物医学工程
·
电化学传感
·
纳米材料科学
·
临床检验学
·
糖尿病监测
·
转化医学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 34
·14453-14462
·
IF 3.288
Bo Wang,Yue Li,Kun Liu,Jinhui Zhang,Xiaoyu Wu
Porous network-like Ni3S2 nanoarchitectures have been successfully synthesized on nickel foam via a facile eco-friendly biomolecule-assisted hydrothermal process, in which L-cysteine serves as both a sulfur source and a directing molecule in the formation of Ni3S2 nanoarchitectures. The possible formation mechanism of network-like Ni3S2 nanostructures has been proposed on the basis of the experimental results. The unique three-dimensional network-like Ni3S2@NF nanoarchitectures can produce a synergistic effect for facilitating electron transport and ionic diffusion within the electrode, accommodating the volume expansion during cycling and leading to excellent electrochemical performance. The resulting binder-free Ni3S2@NF electrode delivers a high reversible specific capacity of 847.82 mA h g−1 at a current density of 200 mA g−1, which remains at 569.86 mA h g−1 even after 300 cycles (a 67.21% retention of the second cycle), and excellent rate performance. This facile, environmentally benign and solution-phase biomolecule-assisted method can be potentially extended to the preparation of other novel porous chalcogenides with potential applications in the fields of hydrogen storage, high-energy batteries, supercapacitors, and catalysis.
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
LANGMUIR
·
2022
·
IF 4.331
Xueying Wang,Yang Yang,Rui Wang,Ling Li,Xiaohui Zhao,Wenming Zhang
Herein, we fabricate N-doped porous Ni3S2–Co9S8/carbon aerogels (Ni3S2–Co9S8/NCAs) using carrageenan/NiCo-metal–organic framework (MOF) hydrogels as the precursor via the high-temperature carbonization route with excellent electrocatalytic properties for the oxygen evolution reaction (OER). The electrochemical measurements indicate that the Ni3S2–Co9S8/NCA as a quintessential electrocatalyst exhibits excellent OER performance, which has outperformed most transition metal sulfide (TMS) catalysts in alkaline environments, as attested with a lower overpotential of 337 mV at 10 mA cm–2 and a smaller Tafel slope of 77 mV dec–1. Meanwhile, a Zn–air battery based on Ni3S2–Co9S8/NCA + Pt/C achieves a large power density of up to 256 mW cm–2 (and 193 mW cm–2), small charge/discharge voltage gap, and good cycling stability, notably better than the conventional RuO2 + Pt/C-based Zn–air batteries. These excellent electrocatalytic properties are mainly attributed to the distinct hierarchical porous structure and interfacial synergy between the Ni3S2 and Co9S8 nanoparticle structure with rich defects, facilitating the mass transport and high graphitization degree beneficial for electron mobility. It is envisioned that the research provides a novel approach for the exploration of marine biomass as an electrocatalyst.
研究领域:
材料科学
·
电化学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Wenqing Lu,Ye Song,Meiling Dou,Jing Ji,Feng Wang
A hierarchically porous MoS 2 on Ni 3 S 2 nanorod array on Ni foam (MoS 2 /Ni 3 S 2 /NF) was firstly fabricated through a simple microwave-assisted hydrothermal method , and then followed by electrochemical deposition approach in which MoS 2 /Ni 3 S 2 /Ni foam is decorated with CoS (CoS MoS 2 /Ni 3 S 2 /NF). In contrast to conventional hydrothermal approach, microwave irradiation accelerates the synthesis of MoS 2 /Ni 3 S 2 /Ni foam from time of >20 h–2 h. The characterization of CoS MoS 2 /Ni 3 S 2 /NF by scanning electron microscope (SEM) and high resolution transmission electron microscope (HRTEM) indicate that a whole scale of 1D the Ni 3 S 2 nanorods were hierarchically integrated with MoS 2 and CoS nanosheets . The as-synthesized CoS MoS 2 /Ni 3 S 2 /NF hybrid not only endows the ease transport of electrons along Ni 3 S 2 nanorods to Ni foam, but also accommodates maximal exposure of active edge sites to the reactants through hierarchically porous CoS doped MoS 2 nanosheets , accomplishing the promoted kinetics and activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). By electrochemical measurements such as linear sweep voltammetry (LSV) and electrochemical impedance spectroscope (EIS), we find that the CoS MoS 2 /Ni 3 S 2 /NF hybrid shows markedly enhanced electrochemical performance for both HER and OER. Specifically, the optimal CoS MoS 2 /Ni 3 S 2 /NF 8C possesses the low overpotentials (η 10 ) of 85 and 225 mV at current density (|j|) of 10 mA cm −2 in 1.0 M KOH and the small 62.3 and 46.1 mV dec −1 Tafel slope for HER and OER, respectively, outperforming those of most of the current noble metal-free electrocatalysts . These results highlight the fact that CoS MoS 2 /Ni 3 S 2 /NF is a high-performance, noble-metal-free electro-catalyst, and provide a potential avenue toward achieving an enhanced electrocatalytic activity towards both in HER and OER. Yet the duration of the as prepared catalyst in OER still need to be improved.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 52
·期 7
·3642-3656
·
IF 2.302
Long Lu,Yao Yadong,Yan Minglei,Wang Hongjing,Zhang Guanggao,Kong Menglai,Yang Lin,Liao Xiaoming,Yin Guangfu,Huang Zhongbing
Ni 3 S 2 @polypyrrole/nickel foam (Ni 3 S 2 @PPy/NF) composite was successfully synthesized by combining a facile hydrothermal synthesis and a simple electrochemical-deposited process. For comparative study, the honeycomb-shaped Ni 3 S 2 had in situ been grown on NF without the addition of any nickel salt to obtain the Ni 3 S 2 /NF composite. The electrochemical measurement results show that the area capacitance of the Ni 3 S 2 @PPy/NF electrode is 1.13 F cm −2 that is slightly lower than 1.26 F cm −2 of the Ni 3 S 2 /NF electrode at a high current density of 30 mA cm −2 , yet its rate capability and cycling stability are far better than those of the Ni 3 S 2 /NF electrode. Meanwhile, an asymmetric supercapacitor on the basis of the Ni 3 S 2 @PPy/NF anode and the AC cathode exhibits a high energy density and power density of 17.54 Wh kg −1 and 179.33 W kg −1 at 2.5 mA cm −2 , respectively; besides, the energy density is still 8.67 Wh kg −1 at a power density of 3587.41 W kg −1 even at 50 mA cm −2 . Moreover, the capacitances of the device remain unchanged after 3000 galvanostatic charge/discharge cycles at a high current density of 30 mA cm −2 . Furthermore, two such 1 cm 2 devices connected in series can light five 40-mW LED indicators or power one of the same-power LED indicator for 20 min after being fully charged. The results demonstrate that our asymmetric supercapacitor has a promising potential in commercial applications.
研究领域:
电化学
·
材料科学
·
能源存储
·
纳米材料
·
功能材料
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2021
·Vol. 23
·期 8
·3090-3103
·
IF 10.182
Changzhou Chen,Dichao Wu,Peng Liu,Jing Li,Haihong Xia,Minghao Zhou,Jianchun Jiang
Lignin is an abundant source of aromatics, and the depolymerization of lignin provides significant potential for producing high-value chemicals. Selective hydrogenolysis of the C–O ether bond in lignin is an important strategy for the production of fuels and chemical feedstocks. In our study, catalytic hydrogenolysis of lignin model compounds (β-O-4, α-O-4 and 4-O-5 model compounds) over Ni3S2-CS catalysts was investigated. Hence, an array of 2D carbon nanostructure Ni3S2-CSs-X-Y derived catalysts were produced using different compositions at different temperatures (X = 0 mg, 0.2 mg, 0.4 mg, 0.6 mg, and 0.8 mg; Y = 600 °C, 700 °C, 800 °C, and 900 °C) were prepared and applied for hydrogenolysis of lignin model compounds and depolymerization of alkaline lignin. The highest conversion of lignin model compounds (β-O-4 model compound) was up to 100% and the yield of the obtained corresponding ethylbenzene and phenol could achieve 92% and 86%, respectively, over the optimal Ni3S2-CSs-0.4-700 catalyst in iPrOH at 260 °C without external H2. The 2D carbon nanostructure catalysts performed a good dispersion on the surface of the carbon nanosheets, which facilitated the cleavage of the lignin ether bonds. The physicochemical characterization studies were carried out by means of XRD, SEM, TEM, H2-TPR, NH3-TPD, Raman and XPS analyses. Based on the optimal reaction conditions (260 °C, 4 h, 2.0 MPa N2), various model compounds (β-O-4, α-O-4 and 4-O-5 model compounds) could also be effectively hydrotreated to produce the corresponding aromatic products. Furthermore, the optimal Ni3S2-CSs-0.4-700 catalyst could be carried out in the next five consecutive cycle experiments with a slight decrease in the transformation of lignin model compounds.
研究领域:
催化化学
·
可再生资源利用
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）