INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Tai An,Qingfeng Jin,Junxia shen,Weitao Zhang,Qian Huang,Cong Chen,Wen Dong,Ronglei Fan,Mingrong Shen
Although the active species induced by surface reconstruction have been extensively studied during oxygen evolution reaction (OER), it is still highly challenging to regulate and promote the reconstruction level to achieve exceptional catalytic activity and stability for realistic alkaline water electrolysis (AWE). Herein, we demonstrated that nickel mesh (NM) treated by a facile electrochemical anodization (ANM) can be easily induced into a deep reconstruction level on surface after activation, attributing to the autologous creation of a porous and amorphous NiO x (OH) y layer. Additionally, the reconstruction level can be promoted by increasing the temperature and alkali concentration of the electrolyte during the activation process. The deeply reconstructed ANM enables excellent OER performance with a low overpotential of 284 mV to achieve 10 mA/cm 2 , 132 mV lower than that of the NM. When combined with a Raney Ni cathode, the assembled AWE device working under industrial conditions can implement 400 mA/cm 2 current at a low cell voltage of 1.79 V with a stable operation for 14 days, showing great potential in practical hydrogen production .
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Environmental Science-Nano
·
2020
·Vol. 7
·期 9
·2723-2734
·
IF 7.683
Jinzhu Zhu,Jingxiang Sun,Shuanghong Tian,Juan Yang,Jinxi Feng,Ya Xiong
A nano-MgO film supported on 3D nickel mesh was prepared via an electrodeposition–thermolysis process. The film possessed high catalytic activity for the ozonation of toluene, but suffered from deactivation. Interestingly, after fluorination, its breakthrough time was 20 times longer (i.e., from 30 to 600 min) under 50% relative humidity. This significant enhancement was attributed to the formation of a fluorinated MgO film, Mg(OH)F, as confirmed using XRD, XPS, SEM, etc. Mg(OH)F possessed two typical acidic sites (Brønsted and Lewis sites), and they could co-catalyze O3 to generate more highly active ˙OH and O radicals. In particular, its Brønsted acidity could considerably decrease the accumulation of acidic intermediates on the film, suppressing its deactivation. Fluorinated MgO, Mg(OH)F, could be applied as a multifunctional ozonation catalyst for the degradation of other refractory pollutants.
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
OPTICS EXPRESS
·
2021
·Vol. 29
·期 16
·25254-25269
·
IF 3.894
Shi-Qing Zhao,Zhou-Ying Jiang,Lin-Sen Chen,Wenbin Huang,Wenbin Huang,Yan-Hua Liu,Yan-Hua Liu,Yan-Hua Liu
It has been a great challenge to design an extremely flexible and stretchable electrochromic device (ECD), due to the physical deformation and fracture of the conductive materials and supporting substrates after plenty of bending. To solve the aforementioned shortcoming of ECDs, in this paper, a self-supporting metal Ni gird electrode is mentioned, which discarded solid or flexible polymeric substrates, having outstanding features of extremely foldability (bending radius lower 50 μm), stretchability (stretching to 117.6%), excellent conductivity (sheet resistance lower 0.4 Ω/sq), high transmittance (about 90% in full spectra), and ultra-thin thickness (3.7 μm). By assembling the metal electrode, the electrochromic material and the hydrogel, a paper-thin, ultra-flexible, and stretchable ECD with an overall thickness of 113 μm was prepared, which could be attached to the manifold and undulating surface of things and be stretched without compromising the dynamic bleaching and coloration performance. The triple-layered and substrate-free ECD with excellent flexibility and wearability could serve as futuristic electronics used for multiple purposes, like flexible displays, camouflage wearables and medical monitoring, etc.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2023
·Vol. 29
·期 4
·1531-1541
·
IF 2.8
Huang An,Liu Peijun,Lin Peihua,Fang Ming,Jin Guanping,Chen Chunnian
Pursuing efficient, economical, and stable electrodes on hydrogen production by water splitting is of great significance for new energy sources. In this work, Ni-Co-P self-supported electrocatalyst at macroporous nickel mesh electrode (NCP/NM) was prepared by a combination of hydrothermal and phosphorylation reactions. The Ni-Co with spherical form was in-situ deposited on nickel mesh (NM) in the alkaline environment provided by aqueous ammonia. The phosphorylation process offered the doping of P elements at the surface of Ni-Co, forming irregular nanosheets. The fabricated electrode only needed to be supplied with an overpotential of 126 mV to respond to a current density of 10 mA cm −2 in 1 M KOH electrolyte. The lower Tafel slope (87.62 mV dec −1 ) and charge transfer resistance suggested NCP/NM electrode exhibited competitive hydrogen evolution reaction (HER) kinetics. In addition, NCP/NM showed good durability and applicability in the alkaline medium. The increase in electrochemical active area, the fast electron transfer without binder, and the synergistic effect among Ni, Co, and P collectively contributed to the electrode with competitive hydrogen production performance. The inspiring HER performance of NCP/NM, as well as the low-cost and easily accessible synthesis method, displayed the enormous potential and advantages of its application in industrial water splitting for hydrogen production.
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
Optics Continuum
·
2023
·Vol. 2
·期 3
·554-563
·
IF 0
Shiqing Zhao,Wenwen Xu,Yanhua Liu
Flexible electrochromic devices (ECDs) are a future technology with huge impact on wearable displays, energy saving, and adaptive camouflage. In this work, we used embedded nickel (Ni) mesh transparent electrodes combined with a thin polymer film of poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) to build a multifunctional flexible electrochemical device that integrates the functions of electrochromic and supercapacitor devices. The multi-layer architecture improves the device performance in terms of optical contrast and mechanical strength. Ni-mesh electrodes have a high optical transparency (84.8%), good mechanical flexibility, and low resistance (0.5 Ω/sq), which is conducive to efficient electron injection, benefiting to the response time of the constructed device. The thin polymer film of PEDOT:PSS is an electrochromic (EC) material that also uniformly distributes electrons for a uniform coloration. The fabricated device shows fast response to coloring and bleaching (1.2 and 0.8 s, respectively), an absolute transmittance contrast ratio of 40%, and area capacitance of up to 2.48 mF/cm2. Furthermore, the device exhibits excellent flexibility, and the electrochromic and electrochemical properties of the device are only partially diminished upon folding, which is beneficial for the construction of multifunctional flexible electrochromic devices. With its response time, working stability, and bending ability, our multifunctional device paves the way for the next generation of flexible electronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
ORGANIC ELECTRONICS
·
2019
·
IF 3.495
Cheng Chen,Yan-Hua Liu,Ming Zhu,Shi-Qing Zhao,Wen-Wen Xu,Linsen Chen,Wenbin Huang
Electrochromic devices are emerging as a futuristic technology for flexible electronics with the practical application values in energy-saving, displaying and military camouflage, however, the limitations in the optical, electrical and mechanical properties of the existing transparent conducting electrodes (TCEs) appear as a major obstacle for realizing high performance flexible electrochromic devices. In this work, we have proposed and demonstrated a fast-response and bendable polymer poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT: PSS) electrochromic device based on the embedded nickel (Ni) grid electrode. The Ni grid electrode, fabricated though patterned electroplating, has low sheet resistance (~1.3 Ω/sq), high transparency (~80%), excellent mechanical reliability and long-term chemical stability, exhibiting a figure of merit of 1250, surpassing the most existing TCEs. In addition, we have proposed a compact electrochromic architecture with the electrochromic PEDOT: PSS layer and solid polymer electrolyte being sandwiched between two embedded Ni grid electrodes. The device shows a short coloration and bleaching time (~1 s for 90% optical contrast), a high coloration efficiency (325 cm 2 /C) and excellent mechanical reliability (optical contrast retention ~80% after 1000 bending circles), paving a way for high performance flexible electronics.
研究领域:
材料科学
·
电子工程
·
光学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Qiang Wang,Lei Yang,Bing Dai,Jie Bai,Zhenhuai Yang,Shuai Guo,Yurong He,Jiecai Han,Jiaqi Zhu
Forests of vertically aligned carbonaceous microcones are fabricated directly on a nickel mesh by microwave-plasma-assisted chemical vapor deposition. The microstructure is formed through a simple one-step process involving self-assembly. The fabricated composite exhibits superhydrophobicity and superoleophilicity as well as low density, owing to which it floats on water and can be used for the in-situ separation of oil from water at the oil/water interface. Furthermore, the composite exhibits pH responsivity, and its water permeability can be varied simply by altering the pH of the aqueous solution. In addition, the composite is suitable for use as an electrode material for supercapacitors owing to its large geometric surface area, porous structure, and superior electrical properties, which allow for fast ion and electron transportation. Thus, this composite consisting of forests of vertically aligned carbonaceous microcones on a nickel mesh is expected to find use in a wide range of fields and applications, including in environmental cleanup, flow switches, and energy storage devices.
研究领域:
材料科学
·
环境科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Zhiyi Guo,Tengfei Li,Hao Zhou,Changwei Tan,Ximei Wang,Shuhong Nie,Wenya Xu,Fangfang Pei,Xiuqing Meng,Xinzhou Wu,Xiaolian Chen,Wenming Su,Kai Zhao,Changqing Ye
Flexible electrochromic devices (FECDs) and electrochromic fabrics (ECFs) have attracted great attention in fashion clothing decoration and camouflage due to their low energy consumption and bi-stability. However, the complex and hierarchical structures of fabric substrates pose formidable challenges to the excellent and stable conductivity of ECFs. Here, we developed novel ECFs with excellent EC properties and outstanding stability by integrating FECDs with polyester fabric. Firstly, highly conductive silver (Ag)/nickel (Ni) mesh was heat-laminated on the thermoplastic polyurethane (TPU) film, serving as flexible electrode with high transmittance. On this basis, the FECDs exhibit an exceptionally high transmittance (46.4 %), rapid response time (bleaching for 0.5 s at 0.8 V and coloring for 0.9 s at −0.4 V), outstanding stability (2.6 % decreased after 5000 cyclic switching), and low-power consumption (<0.05 J per cycle in 60 cm 2 FECDs). By harnessing the thermoplastic property of TPU, the FECDs can be readily transferred to fabric for the realization of ECFs, without compromising their comprehensive performances. More importantly, the outstanding conductivity and mechanical stability of ECFs under various challenging conditions (mechanical bending, physical damage, etc.) are unparalleled. We believe the simple-structured high-performance ECFs would be promising for flexible smart textile in any textile-based markets, such as wearable and intelligence camouflage.
研究领域:
材料科学
·
纺织工程
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Menglong Wang,Zhen Zhang,Runyu Chai,Changrong Xia
The solid oxide electrolysis cell (SOEC) can convert greenhouse gases into chemical energy using renewable energy sources. This work presents a high-efficiency barrier-layer-free Ni mesh metal-supported SOEC (MS-SOEC) that is fabricated using a directly assembled approach. Compared with the sintered MS-SOEC, the co-sintering-free fabrication method retains fine microstructures enabling high electrochemical performance. At 800 °C and 1.5 V, a single cell fabricated by this direct assembly process exhibits an impressive electrochemical performance, achieving an electrolysis current density of 1.45 A cm −2 under 50 % CO 2 /CO condition. Moreover, durability tests demonstrate good stability at 750 °C and 1.3 V for over 200 h. This robust performance and operating stability may be attributed to the redox stability of the electrodes and minimal ohmic loss. Consequently, our results indicate that this co-sintering-free MS-SOEC structure could be a promising technology for electrolyzing CO 2 .
研究领域:
能源科学
·
材料科学
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2020
·Vol. 32
·期 38
·2003422
·
IF 27.398
Meng Li,Wei-Wei Zuo,Antonio Gaetano Ricciardulli,Ying-Guo Yang,Yan-Hua Liu,Qiong Wang,Kai-Li Wang,Gui-Xiang Li,Michael Saliba,Diego Di Girolamo,Antonio Abate,Zhao-Kui Wang
The rapid development of Internet of Things mobile terminals has accelerated the market's demand for portable mobile power supplies and flexible wearable devices. Here, an embedded metal-mesh transparent conductive electrode (TCE) is prepared on poly(ethylene terephthalate) (PET) using a novel selective electrodeposition process combined with inverted film-processing methods. This embedded nickel (Ni)-mesh flexible TCE shows excellent photoelectric performance (sheet resistance of ≈0.2–0.5 Ω sq −1 at high transmittance of ≈85–87%) and mechanical durability. The PET/Ni-mesh/polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS PH1000) hybrid electrode is used as a transparent electrode for perovskite solar cells (PSCs), which exhibit excellent electric properties and remarkable environmental and mechanical stability. A power conversion efficiency of 17.3% is obtained, which is the highest efficiency for a PSC based on flexible transparent metal electrodes to date. For perovskite crystals that require harsh growth conditions, their mechanical stability and environmental stability on flexible transparent embedded metal substrates are studied and improved. The resulting flexible device retains 76% of the original efficiency after 2000 bending cycles. The results of this work provide a step improvement in flexible PSCs.
研究领域:
材料科学
·
纳米技术
·
能源工程
·
光电子学
·
柔性电子学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Yihui Wu,Ying Gao,Hanwei He,Ping Zhang
Seeking cost-effective and highly active non-precious hydrogen evolution reaction (HER) electrocatalysts is still strongly desired in water splitting. In this work, a low-cost and highly efficient HER electrocatalysts of amorphous Ni–S–B coating on nickel mesh is successfully synthesized by means of a simple current-density electrodeposition . The obtained Ni–S–B coating shows superior HER electrocatalytic activity as evidenced by low onset overpotential of 27 mV and 240 mV to drive 10 mA·cm −2 under alkaline conditions. Such high hydrogen evolution activity for Ni–S–B coating can be mainly attributed to the larger surface area (more exposed active sites), faster electron transport between electrode-catalyst-electrolyte interfaces, and nickel mesh substrate. Therefore, Ni–S–B coating can be applied as an efficient HER electrocatalyst to use in alkaline water electrolyzers.
研究领域:
电化学
·
材料科学
·
可再生能源
✓ 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）