JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Hongwei Pan,Xin Zhang,Yubao Jia,Yao Zhang,Zhigang Jiang,Caixia Sun,Xu Li,Lei Zhu,Kuikui Wang
Electronic structure regulation is one of the essential strategies for developing advanced electrocatalysts . Herein, FeOOH was electrodeposited on the surface of NiSe 2 /Ni 2 O 3 , resulting in a layered NiSe 2 /Ni 2 O 3 /FeOOH interfacial composite with a unique hierarchical structure and strong electronic interactions. This sheet-like nanostructure provides sufficient space for mass transfer, fully exposes the active sites, and accelerates the reaction kinetics. The optimal sample exhibits excellent oxygen evolution reaction (OER) activity with a low overpotential of 270 mV at a current density of 100 mA cm −2 and a Tafel slope of only 54.7 mV dec −1 . It also has excellent durability. This study provides a new perspective for developing efficient electrocatalysts by constructing interfacial composites.
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 POWER SOURCES
·
2020
·
IF 8.247
Yayun Zheng,Yunrui Tian,Shatila Sarwar,Jujie Luo,Xinyu Zhang
This work reports the fabrication of carbon nanotube (CNT) decorated NiSe 2 nanosheets (NiSe 2 @CNT) by a rapid microwave process in 2 min. Interestingly, NiSe 2 @CNT has a lamellar and tubular interwoven morphology. The specific capacitance of the prepared electrodes with different microwave conditions for supercapacitors were studied. Meanwhile, we compared the electrochemical performances of NiSe 2 @CNT with the presence of different amount of CNT. The optimal NiSe 2 @CNT electrode can demonstrate a high specific capacitance of 980.5 F g −1 at a current density of 1 A g −1 and good cycling stability of 82% retention after 9000 cycles at 5 A g −1 . In addition, an asymmetric supercapacitor was assembled by NiSe 2 @CNT as positive electrode and activated carbon (AC) as negative electrode , which successfully light four white light emitting diodes (LEDs) for 6 min with an energy density of 25.61 Wh kg −1 at a power density of 810 W kg −1 .
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
·
2025
·
IF 9.7
Dongxu Zhu,Guyu Liu,Guangjiang Zhang,Zihao Yin,Huan Yang,Shuai Gao,Chenhe Zhang,Xinguo Xi
Spinel-type transition metal oxide (AB 2 O 4 ) are promising non-precious metal catalysts for oxygen evolution reaction (OER), addressing the challenges of high cost and poor stability in electrocatalytic water splitting. However, their widespread application is hindered by low electrical conductivity and suboptimal performance. In this study, we developed an oxygen vacancy anchoring strategy to construct a highly efficient and durable NiCo 2 O 4 -NiSe 2 heterojunction catalyst on a nickel foam substrate. The three-dimensional cross-linked porous nanorod array facilitates mass and charge transportation. The abundant interconnected interfaces enhance electron transfer kinetics and adsorption of OH intermediates, as confirmed by theoretical simulations. As a result, the as-synthesized NiCo 2 O 4 @NiSe 2 /NF exhibits an overpotential of only 299 mV at a current density of 60 mA cm −2 , significantly outperforming the single-phase NiCo 2 O 4 and demonstrating exceptional durability.
研究领域:
材料科学
·
电催化
·
能源转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2016
·Vol. 28
·期 1
·768-772
·
IF 1.798
Shen Yongzhen,Ren Xiaohui,Qi Xiang,Zhou Jie,Xu Guanghua,Huang Zongyu,Zhong Jianxin
Two-dimensional NiSe 2 nanosheets arrange on three-dimensional carbon cloths (CC) have been synthesized through a facile two-step hydrothermal process. The as-prepared NiSe 2 /CC photoelectrode demonstrates outstanding photoelectrochamical (PEC) performance. Subsequently, a series of characterization techniques including X-ray diffraction and Raman spectra are carried out and confirm a well crystalline NiSe 2 /CC. Additional morphological and microstructural tests depict large-scale NiSe 2 nanosheets are uniformly aligned on the basement of conductive carbon cloth. The PEC measurements show the steady photocurrent density can be effectively raised from 10 to 600 μA/cm 2 when bias potential increases from 0 to 0.5 V, which is proposed to be attributed to the adequate exposure of active sites and reduction of surface contact resistance provided by carbon cloth. The structure and performances of hydrothermal synthesized NiSe 2 /CC suggest promising applications in the field of PEC hydrogen production.
研究领域:
材料科学
·
能源科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Yu Xiang,Qingping Li,Xijun Wei,Xiaoyan Li,Qiaoji Zheng,Yu Huo,Dunmin Lin
Reasonable design and synthesis of anode materials with high capacity, excellent rate capability and good cycling stability is vital for the pragmatic application of sodium-ion batteries (SIBs). Transition metal chalcogenides possess immense potential on account of their distinguished redox reversibility and high theoretical specific capacity. Herein, the hollow metal sulfide/metal selenide (NiS 2 /NiSe 2 ) heteroboxes with rich phase boundaries have been manufactured as anode for SIBs. The lattice distortion and charge redistribution at the phase boundary of the as-prepared NiS 2 /NiSe 2 heteroboxes can expose more active sites, which is profitable to the adsorption of Na + and accelerate the sodium storage kinetics process, and the unique hollow porous structure is conducive to buffering the volume expansion and can facilitate the penetration of electrolyte during the repeated Na + de-intercalation process. By virtue of these advantages, the NiS 2 /NiSe 2 heteroboxes delivers a good rate capability, where the average capacity at 10 A g - 1 in comparison with 0.1 A g - 1 is 64.3%. Otherwise, it exhibits an ultralong reversible capacity of 292 mA h g - 1 after 2000 cycles at 10 A g - 1 with only 0.0125% average capacity decay per cycle. The rational construction of phase boundary with unique structure in this article has guiding significance for the manufacture of progressive SIBs anode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Fengli Wei,Jinghao Shen,Jiayin Xie,Zuyang Luo,Luyan Shi,Tayirjan Taylor Isimjan,Xiulin Yang,Jieshan Qiu,Bin Wu
Understanding and manipulating the structural evolution of water oxidation electrocatalysts lays the foundation to finetune their catalytic activity. Herein, we present a synthesis of NiSe 2 -Ce 2 (CO 3 ) 2 O heterostructure and demonstrate the efficacy of interfacial Ce 2 (CO 3 ) 2 O in promoting the formation of catalytically active centers to improve oxygen evolution activity. In-situ Raman spectroscopy shows that incorporation of Ce 2 (CO 3 ) 2 O into NiSe 2 causes a cathodic shift of the Ni 2+ →Ni 3+ transition potential. Operando electrochemical impedance spectroscopy reveals that strong electronic coupling at heterogeneous interface accelerates charge transfer process. Furthermore, density functional theory calculations suggest that actual catalytic active species of NiOOH transformed from NiSe 2 , which is coupled with Ce 2 (CO 3 ) 2 O, can optimize electronic structure and decrease the free energy barriers toward fast oxygen evolution reaction (OER) kinetics. Consequently, the resultant NiSe 2 -Ce 2 (CO 3 ) 2 O electrode exhibits remarkable electrocatalytic performance with low overpotentials (268/304 mV @ 50/100 mA cm −2 ) and excellent stability (50 mA cm −2 for 120 h) in the alkaline electrolyte. This work emphasizes the significance of modulating the dynamic changes in developing efficient electrocatalyst.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2018
·Vol. 11
·期 8
·1468
·
IF 2.467
Yun Gu,Le-Qing Fan,Jian-Ling Huang,Cheng-Long Geng,Jian-Ming Lin,Miao-Liang Huang,Yun-Fang Huang,Ji-Huai Wu
Co@NiSe2electrode materials were synthesized via a simple hydrothermal method by using nickel foam in situ as the backbone and subsequently characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and a specific surface area analyzer. Results show that the Co@NiSe2electrode exhibits a nanowire structure and grows uniformly on the nickel foam base. These features make the electrode show a relatively high specific surface area and electrical conductivity, and thus exhibit excellent electrochemical performance. The obtained electrode has a high specific capacitance of 3167.6 F·g−1at a current density of 1 A·g−1. To enlarge the potential window and increase the energy density, an asymmetric supercapacitor was assembled by using a Co@NiSe2electrode and activated carbon acting as positive and negative electrodes, respectively. The prepared asymmetrical supercapacitor functions stably under the potential window of 0–1.6 V. The asymmetric supercapacitor can deliver a high energy density of 50.0 Wh·kg−1at a power density of 779.0 W·kg−1. Moreover, the prepared asymmetric supercapacitor exhibits a good rate performance and cycle stability.Keywords:Co-doped NiSe2;nanowire;hydrothermal method;pseudocapacitance;asymmetric supercapacitors
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
ACS Applied Nano Materials
·
2025
·
IF 5.5
Yi Yu,Wenbin Luo,Zhen Zhang,Ying Feng,Jian Li,Mingyu Zheng,Zisheng Chao,JinCheng Fan
Aluminum batteries (ABs) have recently become a type of battery technology that has attracted much attention due to their advantages such as abundant resources and high theoretical capacity. However, the development of ABs is limited by the inherent characteristics of the positive electrode materials, so finding high-performance positive electrode materials has become a top priority in research. Transition metal sulfides/selenides, as positive electrode materials for ABs, offer notable benefits such as high specific capacity and long cycle life, showing great application potential. In this study, a nanoscale porous dodecahedral NiS2/NiSe2 heterojunction was designed and prepared for an ABs positive electrode. The unique heterojunction structure generates a built-in electric field, which facilitates the transport of electrons and ions and improves the reaction kinetics. Nanoparticles can provide a larger specific surface area, while the porous structure supports buffering volume expansion and promotes electrolyte infiltration, thereby improving the electrochemical performance. Experimental results show that the NiS2/NiSe2 heterojunction exhibits a notable initial capacity of 375.5 mAh/g within the voltage range of 0.01–2.3 V, and it can still maintain 81.1 mAh/g after 400 cycles. This research provides ideas for developing a high-performance positive electrode for ABs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Caichi Liu,Tao Gong,Jun Zhang,Xuerong Zheng,Jing Mao,Hui Liu,Ying Li,Qiuyan Hao
Developing earth-abundant transition-metal phosphides electrocatalysts with high activity and good durability toward alkaline hydrogen evolution reaction (HER) is crucial for sustainable hydrogen energy economy. However, their intrinsic activity is limited by the inadequate hydrogen adsorption energy. Herein, we reported a novel self-supported heterostructure catalyst in the form of Ni 2 P-NiSe 2 , which is obtained by phosphorization of NiSe 2 nanosheet arrays grown on the carbon cloth. The heterostructure catalyst exhibits excellent HER performance in 1 M KOH, only requiring an overpotential of 66 mV at a current density of 10 mA cm −2 with a Tafel slope of 72.6 mV dec -1 and showing excellent long-term durability. The experimental and theoretical calculation results demonstrate the strongly electronic interaction between Ni 2 P and NiSe 2 , resulting in the optimized Gibbs free energy of hydrogen and water adsorption. This work concerning the regulation of electronic structure through interface engineering may offer a deep insight to explore superior catalysts.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2019
·
IF 0
Tianzi Hao,Yangyang Liu,Guanglei Liu,Chengxin Peng,Bingjie Chen,Yutong Feng,Jiajia Ru,Jinhu Yang
Faradaic electrodes combining with polyaniline (PANI) are extensively employed for energy devices, however, the faradaic mechanism wherein has scarcely been clarified in depth. Herein, novel PANI@NiSe 2 core-shell nanotubes constructed through a universal Se nanotube-templating strategy exhibited outstanding performance as an electrode material for supercapacitors and were investigated their faradaic behavior. The PANI@NiSe 2 nanotube electrode exhibits remarkable rate capability, excellent cycling performance and ultrahigh specific capacity of 275.6 mAh g −1 at 1 A g −1 , surpassing most of Ni-based electrodes in previous reports. XPS data and Mulliken charge analyses from density functional theory (DFT) calculations suggest the strong interaction of NiSe 2 and PANI via interfacial C–Ni–Se bonds can induce electron accumulation at sites Ni ions , which not only promotes electron transfer within electrode but also enhances theoretical faradaic capacity of the electrode. Furthermore, the DFT calculations reveal that the combination of NiSe 2 and PANI can facilitate both the adsorption and desorption of OH − ions, guaranteeing a fast and efficient faradaic reaction. This study provides insight into the faradaic mechanism generally applicable to electrochemical energy storage devices.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Yuechen Dang,Guangqing Wang,Xiang Li,Xu Ma,Feng Yue,Chuantao Wang,Loujun Gao,Feng Fu
The exploration of high-efficiency and stable electrocatalysts for alkaline and seawater hydrogen evolution reaction (HER) is the key to realize energy conversion, but there is still a significant challenge owing to the slow HER kinetics in alkaline and seawater systems. In this study, we prepared nickel foamed-supported Ru, W co-doped NiSe 2 (Ru, W–NiSe 2 /NF) by a brief two-step hydrothermal strategy and the prepared Ru, W–NiSe 2 /NF displays exceptional HER property, requiring only a low overpotential of 100 and 353 mV to reach 10 mA cm −2 in 1 M KOH and natural seawater, respectively, far superior to Ru–NiSe 2 /NF, W–NiSe 2 /NF and NiSe 2 /NF. Electrochemical surface area (ECSA) and operando electrochemical impedance spectroscopy (EIS) verify the abundant active sites and superior electron transfer rate of Ru, W–NiSe 2 , which optimized the HER kinetics in alkaline solution and natural seawater. The ECSA normalization and TOF results indicated that Ru, W co-doping increased the intrinsic activity of NiSe 2 . This study revealed the impact of bimetallic doping on the intrinsic activity of NiSe 2 , and provided a practical strategy for designing and developing the HER electrocatalysts with excellent performance.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jiangshan Gao,Yide Hao,Shuyan Lin,Ziming Zhang,Huifang Li,Yan He
The microstructure of carbon nanotubes (CNTs) plays a pivotal role in determining their performance as electrode materials. Herein, CNTs encapsulating NiSe 2 /CoSe 2 nanoparticles (CNT@NiCo-Se) are derived from Ni-Co Prussian blue analogue (Ni-Co PBA), and the CNTs possess smaller diameter and larger interlayer spacing due to the “etching and isolation technique” that is adopted to prevent the accumulation of Ni/Co in Ni-Co PBA during the calcination process. CNT@NiCo-Se exhibits a specific capacity of 105.1 mAh g −1 at a current density of 1 A g −1 , which is 375 % higher than that obtained without isolation strategy, which resulted in the microstructure advantages of smaller diameter and larger interlayer spacing. The actual reason is that smaller diameter and larger interlayer spacing correspond to higher charge transfer density and increased the –OH binding energy (OHBE) according to density functional theory (DFT) calculation results. In addition, the assembled asymmetric supercapacitor (ASC) device exhibits a high energy density of 46.3 Wh kg −1 at 801 W kg −1 and a high power density of 8000 W kg −1 at an energy density of 12.0 Wh kg −1 , and the initial specific capacitance of 80.4 % can be maintained after 10,000 cycles at 10 A g −1 . More importantly, this work provides a novel strategy for microstructure adjustment of CNTs in the field of energy storage and conversion.
研究领域:
材料科学
·
能源存储与转换
✓ 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）