INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Muhammad Rauf,Liulian Pi,Jingwen Wang,Hongwei Mi,Qianling Zhang,Peixin Zhang,Xiangzhong Ren,Yongliang Li
Transition metals sulfide-based nanomaterials have recently received significant attention as a promising cathode electrode for the oxygen evolution reaction (OER) due to their easily tunable electronic, chemical, and physical properties. However, the poor electrical conductivity of metal-sulfide materials impedes their practical application in energy devices. Herein, firstly nano-sized crystals of cobalt-based zeolitic-imidazolate framework (Co-ZIF) arrays were fabricated on nickel-form (NF) as the sacrificial template by a facile solution method to enhance the electrical conductivity of the electrocatalyst . Then, the Co 3 S 4 /NiS@NF heterostructured arrays were synthesized by a simple hydrothermal route. The Co-ZIFs derived Co 3 S 4 nanosheets are grown successfully on NiS nanorods during the hydrothermal sulfurization process. The bimetallic sulfide-based Co 3 S 4 /NiS@NF-12 electrocatalyst demonstrated a very low overpotential of 119 mV at 10 mA cm −2 for OER, which is much lower than that of mono-metal sulfide NiS@NF (201 mV) and ruthenium-oxide (RuO 2 ) on NF (440 mV) electrocatalysts. Furthermore, the Co 3 S 4 /NiS@NF-12 electrocatalyst showed high stability during cyclic voltammetry and chronoamperometry measurements. This research work offers an effective strategy for fabricating high-performance non-precious OER electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Ruizhi Zhang,Zhaoqiang Zhu,Jiahao Lin,Kefu Zhang,Nan Li,Chongjun Zhao
Non-noble-metal based catalysts for overall water splitting have attracted widespread attention. Herein, we report a Fe(II) hydrolysis reaction assisted in-situ etching and growth method for the design of Fe 2 O 3 nanoparticles-anchored ultrathin Ni(OH) 2 nanosheets composites on nickel foam (Fe 2 O 3 /Ni(OH) 2 /NF), followed by solvothermal sulfidation conversion into FeS/NiS/NF electrode. As-prepared FeS/NiS/NF electrode possesses low overpotentials of 203 mV and 144 mV to achieve a current density of 10 mA cm −2 in 1.0 M KOH for OER and HER, respectively. FeS/NiS/NF directly serves as both anode and cathode to assemble a two-electrode water electrolyzer, which only requires a voltage of 1.618 V to afford water-splitting current density of 10 mA cm −2 in 1.0 M KOH. Additionally, this water splitting device can also be driven by using photovoltaic solar panels. This work provides a new strategy to tailor the components and structure of the catalyst and thus to improve electrocatalytic performance.
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 INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Yin Huang,Yaoyao Pan,Xiaoyu Huang,Jialu Zhao,Xiuhua Wang
During water electrolysis, multifunctional electrocatalysts with outstanding functionality and endurance must be thoughtfully constructed and designed. Below, we report a hollow NiS@Ni 2 P nanoframe heterostructure that works well as a substitute catalyst for the urea oxidation and general water splitting reactions. The hollow NiS@Ni 2 P nanoframe was synthesized by ion exchange, sulfurization and phosphating, which is favorable for achieving a heterostructure. The NiS@Ni 2 P catalyst exhibits excellent catalytic activity and strong long-term stability in 1.0 M KOH solutions for the hydrogen evolution reaction, which needs 121 mV to achieve 10 mA cm −2 . And for the oxygen evolution reaction, the catalyst needs 311 mV to acquire 50 mA cm −2 . These advantages come from the optimal electronic structural configuration, hierarchical hollow nanoframe structure, and large surface area. It could attain 10 mA cm −2 at 1.41 V when utilized as a urea oxidation reaction anode, which is lower than the oxygen evolution reaction. For total water splitting and urea oxidation process, NiS@Ni 2 P as a bifunctional catalyst holds tremendous promise due to its strong electrocatalytic activity, ease of manufacture, and low cost of raw ingredients.
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 ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Xudong Zhao,Xiangxi Wang,Lei Chen,Xianglong Kong,Zhi Li,Ying Zhao,Zhuoyan Wu,Tingyu Wang,Zhiliang Liu,Piaoping Yang
Exploring low-cost and high-activity transition metal-based electrocatalysts for oxygen evolution reaction (OER) is critical toward mass hydrogen generation by water splitting. Herein, a cheap Fe element doped flower-like nickel sulfides catalyst (Fe-NiS/NiS 2 ) is designed and synthesized through facile electrostatic adsorption and sulfuration methods. It is investigated that the Fe doping effectively induces the lattice contraction of nickel sulfides and regulates the phase composition and heterogeneous interfaces, thus enabling high intrinsic OER activity. The Fe-NiS/NiS 2 catalyst shows a high electrochemically active surface area of 150 cm 2 , a small overpotential of 361 mV at 100 mA cm −2 and a low Tafel slope of 61.5 mV dec -1 . Furthermore, the Fe-NiS/NiS 2 exhibits a very excellent structure and performance stability without current attenuation for 24 h at 1.50 V versus reversible hydrogen electrode. This work provides an important insight for the exploitation of low-cost and high-performance OER catalysts with cheap Fe element doping metal sulfides.
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 ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Congli Wang,Hongfang Jiu,Lixin Zhang,Ruijia Xu,Sicong Che,Zhixin Guo,Yuxin Han,Jinfeng Ma,Hui Li,Fengbo Guo
Exploring novel electrode materials is the key to developing attractive lithium-ion batteries (LIBs). Hence, we successfully synthesized NiS@C/Ti 3 C 2 by in situ growth-sulfuration-pyrolysis strategies. As LIBs anode, its initial discharge capacity of NiS@C/Ti 3 C 2 was 1509 mAh g −1 and its discharge capacity was 301.2 mAh g −1 at 1 A g −1 . Most importantly, when the current density recovered to 0.03 A g −1 continuing 20 cycles and maintained excellent capacity of 864.6 mAh g −1 . Notably, its capacity was 649.9 mAh g −1 after 700 cycles at 0.5 A g −1 . Such extraordinary performances are mainly attributed to (1) carbon matrix can improve conductivity of composite material, effectively buffer volume expansion of material during cycles process, and prevent structure collapse. (2) the hollow structure produced by sulfuration, porous carbon matrix and the gaps among Ti 3 C 2 nanosheets are conducive to the penetration of electrolytes. They provide abundant buffer space for volume expansion during Li + embedding/stripping process, which effectively alleviates structure collapse and electrode crushing. (3) Ti 3 C 2 nanosheets as high-conductive 2D substrate not only offer fast diffusion channels but also alleviate structure collapse of NiS@C. More importantly, this unique structure can alleviate restacking of Ti 3 C 2 and provide affluent active sites, thus endowing material with improved electrical conductivity . Our work provides insightful insights into the design of transition metal sulfides (TMSs) anchored at Ti 3 C 2 nanosheets as LIBs anode.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yiyang Bi,Kun Xu,Ying Wang,Xin Li,Xupeng Zhang,Jiabo Wang,Yu Zhang,Qun Liu,Qianrong Fang
Metal-organic framework materials (MOFs) and their derivatives have been widely used in the field of photocatalytic water decomposition for hydrogen production . In this study, NiS/CdS was initially acquired and subsequently combined with DUT-67 via ultrasound to create a unique ternary photocatalyst NiS/CdS@DUT-67. The rate of hydrogen production for NiS/CdS@DUT-67 is 9618 μmol·g NiS/CdS −1 ·h −1 for NiS/CdS@DUT-67, which is 32 times and 2.5 times higher than that for CdS and NiS/CdS, respectively. Of particular interest is the fact that even after 50 h of photocatalysis, the hydrogen production rate did not show a significant decrease, demonstrating its excellent stability compared to CdS and NiS/CdS. In this ternary system, NiS and DUT-67 function as dual co-catalysts for CdS, collaborating to enhance charge separation during the photocatalysis. This study presents a clear demonstration of the advantages of utilizing metal–organic framework derivatives (MOF-derivatives) cophotocatalysts and their synergistic effect, resulting in improved photocatalytic activity and stability of semiconductors. This innovative approach provides a new perspective on constructing photocatalytic materials with exceptional performance.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Fanjia Sun,Xueqing Tian,Jianbing Zang,Rui Zhu,Zhiwei Hou,Youbin Zheng,Yanhui Wang,Liang Dong
Transition metal sulfides, recognized for their platinum-like activity, were prominent in electrolytic water hydrogen production research. In this context, we reported a NiS/NiS 2 heterostructure composite active center electrocatalyst optimized by Cr doping (Cr-NiS/NiS 2 @NF) based on the dual regulation of defect engineering and interface engineering. The electronic structure of Ni and S could be adjusted by Cr doping, and the creation of defects exposed more active sites. Meanwhile, the resulting NiS/NiS 2 heterogeneous interface acted as a composite activity center, enhancing the alkaline HER process rate. The Cr-NiS/NiS 2 @NF achieved 100 mA cm −2 at an overpotential of 172.8 mV. Density functional theory analysis confirms the significant decrease in the water dissociation potential barrier, attributable to the electron redistribution caused by Cr doping. The optimized heterointerface functioned as a composite activity center. Here, the Cr-NiS component effectively facilitated water dissociation, while the NiS 2 component primarily enhanced H 2 generation and desorption. The introduction of Cr significantly improved the electronic coupling at the bi-phase interfaces, thereby accelerating the transport of hydrogen intermediates. This study revealed the modulation of electron distribution at the Cr-doped nickel sulfide heterointerface, offering deep atomic-scale insights. These findings provide novel perspectives for the field of hydrogen production via water electrolysis.
研究领域:
材料科学
·
催化化学
·
能源研究
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 24
·10712-10724
·
IF 3.553
Li Wenhua,Chen Qianqiao,Zhong Qin
The nickel sulfide (NiS) nanoparticles were anchored on the mesoporous graphitic carbon nitride (g-C 3 N 4 ) by one-pot calcination with sulfur powder as sulfur source and pore-forming agent. It is the first attempt to use the g-C 3 N 4 /NiS as a counter electrode (CE) for quantum-dot-sensitized solar cells. The g-C 3 N 4 /NiS co-catalyst based on 0.74 wt% NiS loading for S 2− n reduction obtained a low interface charge transfer resistance ( R ct ) of 1.08 Ω. The power conversion efficiency of the QDSSC assembled with ZnSe/CdS/CdSe/ZnSe-sensitized TiO 2 photoanode and g-C 3 N 4 /NiS CE is up to 5.64%, which is 3.05 times as high as that of pure g-C 3 N 4 CE. The enhancement of cell efficiency is attributed to the synergistic effects of excellent morphology of g-C 3 N 4 and its co-catalysis with NiS nanoparticles. The mesoporous architecture contributes a large specific surface area and fast electrolyte transfer channels, and the coupling of g-C 3 N 4 with NiS promotes the transfer of charge between the interface g-C 3 N 4 /NiS and electrolytes. The presented strategy for fabricating mesoporous architecture with g-C 3 N 4 /NiS uses low-cost raw materials and a simple preparation method, which provides a feasible route to enhance the electrocatalytic activity of g-C 3 N 4 .
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Ying Yan,Wenlei Wang,Yi Peng,Kehui Xue,Jing Wang,Hongbo Xiao
Biochar has been widely used in the removal of heavy metals from wastewater due to its obligate adsorption properties. The reutilization of exhausted biochar has become a challenge for chemical researchers. In this study, diazotization-modified biochar adsorbing Ni 2+ was used as a precursor to prepare heterogeneous NiS/NiSe/3D porous biochar (DAC-Ni/NiS/NiSe) using vulcanization followed by in situ competitive hydrogen reduction. The composites exhibited excellent performance in As(III) removal from water via both adsorption and photocatalysis processes, removing 100% of 10 mg/L As(III) within 110 min with 20 mg catalyst, and 90% removal rate was maintained even after five recyclability runs. The influencing factors of As(III) oxidation in reactive DAC-Ni/NiS/NiSe suspensions were also investigated. The photocatalytic oxidation efficiency of As(III) was susceptible to initial pH. The coexisting species of PO 4 3− and CO 3 2− exhibited obvious suppression on the total As removal, while the presence of Cl − and NO 3 − exhibited no obvious effect on the oxidation efficiency of As. This study provides a feasible and simple strategy for reclaiming waste biochar after adsorbing nickel to prepare energy-intensive materials and implies the possibility and necessity of biowaste applications for environmental remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Huichuan Tang,Zhi Li,Aojie Li,Shuntao Wen,Minghong Liu,Liang Chen,Yucan Zhu,Gangyong Li,Zhaohui Hou,Wei Wang
In this work, we successfully fabricated a carbon fiber-based composite material with a unique vine-like structure using a straightforward electrospinning method that employed dual-carbon-source and a self-catalysis approach. Graphene oxide was incorporated into the spinning matrix, and nickel was used as a catalyst during high-temperature calcination, facilitating the growth of secondary carbon fibers on primary carbon fibers and forming the vine-like structure. This novel hierarchical structure improved the interfacial bonding between carbon fibers, resulting in enhanced conductivity, improved interaction with the electrolyte, reduced lithium-ion diffusion distance, and superior lithium storage performance. The optimized composite material demonstrated excellent lithium storage capabilities, maintaining a specific capacity of 488.5 mAh/g after 400 cycles at a current density of 1 A/g. This work provides a valuable reference for the design of transition metal sulfides with improved lithium storage performance.
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
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 14
·6461-6469
·
IF 3.925
Li'an Peng,Yongxiao Tuo,Yan Lin,Cuiping Jia,Shutao Wang,Yan Zhou,Jun Zhang
Nickel sulfide (NiS) has sparked considerable interest as a promising electrode material for supercapacitors. However, the poor electrical conductivity and unstable structure during the continuous charge–discharge process have limited its practical applications to a great extent. Herein, we report a two-step solvent-thermal method to synthesize phosphorus-doped NiS nanocrystals (P-NiS). The bulk doping of P not only enhances the electrical conductivity and increases the number of electrochemical active sites, but also strengthens the structural stability of the NiS nanomaterial. As a result, the synthesized P-NiS demonstrated an impressive electrochemical performance with a high specific capacity (727.79 C g−1), superior rate performance (50.60% capacity retention at 50 A g−1), and excellent cycling stability (93.10% capacity retention after 3000 cycles). Furthermore, a hybrid supercapacitor (HSC) of P-NiS//AC was assembled in a 2 M KOH electrolyte. It delivered a maximum energy density of 39.80 W h g−1 at the power density of 809.50 W kg−1 and cycling stability with 89.70% capacity retention after 6000 cycles at 1.6 V. This study provided an effective strategy to achieve the bulk doping of heteroatoms into the transition metal sulfides for improving the intrinsic properties of electrodes in electrochemical 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
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 19
·3472
·
IF 5.719
Hongwei Tang,Mengyue Liu,Lingna Kong,Xiaoyan Wang,Yue Lei,Xige Li,Yan Hou,Kun Chang,Zhaorong Chang
In this paper, a series of Fe3O4/MoS2/NiS composite electrodes were synthesized by a simple coprecipitation method. The influence of different ratio additives (MoS2and NiS) on the performance of iron anodes for Ni-Fe batteries was systematically investigated. In this paper, the mixed alkaline solution of 6 mol/L NaOH and 0.6 mol/L LiOH was used as electrolyte, and sintered Ni(OH)2was used as counterelectrode. The experimental results show that the MoS2and NiS additives can effectively eliminate the passivation phenomena in iron electrodes, reduce the electrode polarization, and increase the reversibility capacity. As a result, the Fe3O4/MoS2/NiS composite electrodes exhibit a high specific capacity, good rate performance, and long cycling stability. Especially, the Fe3O4/MoS2(5%)/NiS (5%) electrode with a suitable ratio of additives can provide excellent electrochemical performance, with high discharge capacities of 657.9 mAh g−1, 639.8 mAh g−1, and 442.1 mAh g−1at 600 mA g−1, 1200 mA g−1, and 2400 mA g−1, respectively. This electrode also exhibits good cycling stability.Keywords:nickel-iron battery;iron anode;Fe3O4;sulfide additives
研究领域:
电化学
·
材料科学
·
电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）