APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yuejia Liu,Wenqiang Zhao,Xianliang Li,Jiaqiang Liu,Yide Han,Junbiao Wu,Xia Zhang,Yan Xu
Hierarchical α-Fe 2 O 3 microcubes supported on Ni foam (NF) have been successfully prepared using Fe-MOF as a precursor combined with a hydrolysis process, which can be used as the electrodes directly for effective non-enzymatic glucose sensing. The structures and compositions of the as-prepared α-Fe 2 O 3 /NF electrode materials were carefully characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and energy dispersive spectroscopy (EDS), respectively. The α-Fe 2 O 3 /NF electrodes exhibit excellent glucose oxidation performance with a response time < 3 s and a sensitivity of 10,356 μA mM −1 cm −2 . Additionally, the material shows good anti-interference sensing performance and stability for glucose detection in the presence of ascorbic acid (AA), dopamine (DA), cysteine (Cys), uric acid (UA), NaCl and other interferences. It is believed that α-Fe 2 O 3 /NF composite can act as a promising electrode material for non-enzymatic glucose sensing applications, and the materials design strategy can be also expanded for other functional systems.
研究领域:
材料科学
·
电化学
·
生物传感
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2023
·
IF 4.1
Haidong Zhao,Xiaoyan Hu,Hongjie Kang,Feng Feng,Yong Guo,Zhen Lu
In this paper, NiSb/NiTe/Ni composites were smoothly developed via the microwave method for supercapacitors. The synthesis of NiSb/NiTe crystals was revealed by X-ray photoelectron spectroscopy and X-ray diffraction. The analytic results of scanning electron microscopy and energy dispersive spectroscopy uncover the microscopic morphology as well as the constituent elements of the composites. Self-supported NiSb/NiTe is a supercapacitor cathode that combines high capacitance with excellent cycling stability. The obtained composite electrode displayed remarkable electrochemical properties, presenting a special capacitance of 1870 F g–1 (1 A g–1) and 81.5% of the original capacity through 30,000 times (10 A g–1) of the charging/discharging process. Further, an asymmetric supercapacitor was prepared employing NiSb/NiTe as a cathode and activated carbon as an anode. NiSb/NiTe//AC exhibited a high energy density of 224.6 uW h cm–2 with a power density of 750 μW cm–2 and provided a favorable cycling stability of 83% after 10,000 cycles.
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
Science of Advanced Materials
·
2016
·Vol. 8
·期 7
·1478-1483
·
IF 1.812
Chai Yong-Ming,Shang Xiao,Han Guan-Qun,Dong Bin,Hu Wen-Hui,Liu Yan-Ru,Li Xiao,Liu Chen-Guang
A simple sol–gel thermolysis method has been utilized to prepare plate-like Ni3N films supported on nickel foam (Ni3N/NF) as electrocatalysts for oxygen evolution reaction (OER). The as-prepared samples have been characterized by X-ray diffraction (XRD),
scanning electron microscopy (SEM) and X-ray photoelectron spectra (XPS). XRD shows a typically crystal phase of Ni3N on nickel foam. The broad peak of (100) suggests smaller particle size of Ni3N on NF. SEM images confirm that Ni3N films cover on the surface
of NF. Ni3N films are composed of many uniform nanoparticles, implying larger surface area and more exposed active sites. Electrochemical measurements show that Ni3N/NF exhibits superior OER activity with excellent stability, which can be attributed to more active sites
and the enhanced conductivity derived from NF as support. Ni3N/NF as electrocatalysts for OER may provide novel idea for preparing highly active electrocatalysts from non-noble metallic nitrides.
研究领域:
材料科学
·
电化学
·
催化
·
能量存储与转换
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2020
·Vol. 23
·期 1
·69-81
·
IF 3.117
Yue Zhou,Yanli Chen,Maobin Wei,Hougang Fan,Xiaoyan Liu,Qianyu Liu,Yumeng Liu,Jian Cao,Lili Yang
The exploitation of low-cost, efficient and stable electrocatalysts for overall water splitting in alkaline media is critical for future renewable energy systems, yet still remains a great challenge. Herein, we report the in situ growth of porous NiCoSe nanosheet arrays derived from 2D MOFs on Ni foam through a simple ion-exchange reaction followed by a hydrothermal process. Benefiting from the unique 2D multi-porous framework with high electrochemical active surface area, conductivity and open channels for the release of gaseous products, the as-prepared NiCoSe nanosheet arrays exhibit excellent electrochemical activity with a low overpotential of 170 mV for the hydrogen evolution reaction (HER) at 10 mA cm−2 and 278 mV for the oxygen evolution reaction (OER) at 20 mA cm−2 and long-term stability. Furthermore, the full cell only requires 1.51 V to drive the current density of 10 mA cm−2 when the NiCoSe nanosheet arrays are used as both anode and cathode, which also exhibits distinguished durability for over 48 h. The present work presents a general strategy for the rational design and synthesis of multifunctional 2D porous electrocatalysts, which is also expected to extend to other noble-metal-free catalysts.
研究领域:
能源材料
·
电化学
·
催化化学
·
纳米材料科学
·
可持续能源技术
✓ 已验证
DOI
高影响因子
ChemNanoMat
·
2022
·Vol. 8
·期 9
·e202200243
·
IF 3.82
Xueyang Wang,Fanshu Yuan,Dan Xue,Jie Liu,Jie Wei,Yiwen Wang,Jiahui Wang,Qinghua Qu,Qianli Zhang
Graphical A binder-free electrode was constructed by decorating MnO 2 nanoflowers onto the hybrid material of ZIF-8/ZnO, as derived from ZIF-8 via pyrolysis. Both the composite electrode and the NF/ZIF-8-ZnO/MnO 2 //activated carbon (AC) asymmetric supercapacitor demonstrate excellent electrochemical performance, showing that NF/ZIF-8-ZnO/MnO 2 is a promising candidate for supercapacitors due to the synergistic contribution of ZIF-8, ZnO and MnO 2 . In this study, ZIF-8 (Zn(MeIn) 2 , MeIn=2-methylimidazole) was synthesized directly on Ni foam with the use of polydopamine (PDA). By following a hydrothermal process, MnO 2 nanoflowers were decorated on the hybrid material of ZIF-8/ZnO, as derived from ZIF-8 via pyrolysis at 500 °C under nitrogen flow. The produced binder-free electrode (NF/ZIF-8-ZnO/MnO 2 ) demonstrated an excellent electrochemical performance for supercapacitors, including a specific capacitance of 2005 F g −1 at 2 A g −1 and a fairly high cycling stability (90.74% retention after 4000 cycles). Furthermore, a NF/ZIF-8-ZnO/MnO 2 //activated carbon (AC) asymmetric supercapacitor showed an energy density of 70.57 Wh kg −1 given a power density of 112.45 kW kg −1 . These results demonstrate that NF/ZIF-8-ZnO/MnO 2 is a promising candidate for supercapacitors due to the synergistic contribution of ZIF-8, ZnO and MnO 2 .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Guangshan Zhang,Yanei Xue,Qiao Wang,Peng Wang,Hong Yao,Wen Zhang,Jinbo Zhao,Yang Li
Norfloxacin (NOR) is an emerging antibiotics contaminant due to its high resistance to microbial degradation and natural weathering. In this study, Fe-doped ZnS photocatalyst (Zn 0.9 Fe 0.1 S) was deposited on nickel foam (Ni-foam) to improve photocatalytic activity under visible light irradiation. The mass ratio of Zn 0.9 Fe 0.1 S and Ni-foam was optimized to be 0.03 g catalyst versus per g Ni-foam (0.03 Zn 0.9 Fe 0.1 S/Ni-foam), which led to the highest removal rate of 95%. The optimal degradation condition for NOR over 0.03 Zn 0.9 Fe 0.1 S/Ni-foam was pH at 7.0, initial NOR concentration of 5 mg L −1 , and initial photocatalyst concentration of 11.7 g L −1 , with the highest first-order reaction rate constant of 0.025 min −1 and mineralization rate of 63.1%. The NOR removal rate on 0.03 Zn 0.9 Fe 0.1 S/Ni-foam photocatalyst (95%) was approximately four times of that obtained on Zn 0.9 Fe 0.1 S photocatalyst (25%). The increased photocatalytic performance could be attributed to the function of Ni-foam as excellent electron collectors that provided efficient photoinduced charge separation from Zn 0.9 Fe 0.1 S. The reactive species responsible for the degradation of NOR were photo-generated holes, hydroxyl radical , and superoxide radicals. Nearly 90% of the photocatalytic efficiency was retained over seven cycles and the released metal ion concentrations were <0.3% of the total mass of photocatalyst, suggesting high stability of the photocatalyst during the photocatalytic reactions. The aqueous/solid mass transfer and intraparticle mass transfer for Zn 0.9 Fe 0.1 S/Ni-foam were not limiting factors for the degradation of NOR. Therefore the Zn 0.9 Fe 0.1 S/Ni-foam photocatalyst could be applied in the degradation of hazardous pollutants .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Yue Du,Guangxing Pan,Li Wang,Yonghai Song
Here, a series of low-cost Co x Ni y P nanoparticles embedded in N-doped porous carbon stood up on Ni foam nanocomposites (Co x Ni y P@NC/NF) were prepared as efficient catalysts for hydrogen evolution reaction (HER) by a low temperature hydrothermal and phosphating method. Characterization of various techniques indicated the Co x Ni y P nanoparticles with about 5 nm in diameter were uniformly embedded in NC to form Co x Ni y P@NC nanosheets with thickness of 20–400 nm. The NC was composed of graphene and the Co x Ni y P@NC nanosheets stood up on NF in crisscross fashion. The electrochemical results showed that the Co x Ni y P@NC/NF nanocomposites showed high catalytic activity for HER in alkaline solution and its catalytic activity depended on the ratio of Co:Ni. At the ratio of Co:Ni of 4:1, the Co 4 NiP@NC/NF presented best HER performances with the overpotential of 70 mV at 10 mA cm −1 , better than commercialized Pt. The Co 4 NiP@NC/NF also displayed a wonderful Faraday efficiency of 95%, suggesting that it could effectively convert electrical energy into chemical energy in HER. The catalytic activity of Co 4 NiP@NC/NF remained unchanged in 35 h, indicating the Co 4 NiP@NC/NF possessed good stability. The excellent HER performances might make it be a substitute for precious metal catalysts for 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
Small
·
2019
·Vol. 15
·期 6
·1804769
·
IF 10.856
Hongjing Wang,Hongjie Yu,Ziqiang Wang,Yinghao Li,You Xu,Xiaonian Li,Hairong Xue,Liang Wang
Electrochemical reduction of N 2 to NH 3 provides an alternative strategy to replace the industrial Haber–Bosch process for facile and sustainable production of NH 3 . The development of efficient electrocatalysts for the nitrogen reduction reaction (NRR) is highly desired. Herein, a micelle-assisted electrodeposition method is presented for the direct fabrication of porous Au film on Ni foam (pAu/NF). Benefiting from its interconnected porous architectonics, the pAu/NF exhibits superior NRR performance with a high NH 3 yield rate of 9.42 µg h −1 cm −2 and a superior Faradaic efficiency of 13.36% at −0.2 V versus reversible hydrogen electrode under the neutral electrolyte (0.1 m Na 2 SO 4 ). The proposed micelle-assisted electrodeposition strategy is highly valuable for future design of active NRR catalysts with desired compositions toward various electrocatalysis fields.
研究领域:
电化学
·
催化
·
材料科学
·
可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Fajun Li
Metals have proved to be cracking catalysts for electrochemical reduction of CO 2 to formate (ERCO 2 F), but they suffer from a high overpotential caused by weak adsorption of CO 2 . As far as we know, N-containing polymers, with N atoms lowering the activation energy through efficient trapping of CO 2 , can make contributes to ERCO 2 F. Here, a composite electrode of metal and N-containing conjugated polymer at the interface was used for CO 2 reduction. It exhibited superior Faradaic efficiency (94% ± 1%) and space time yield (306 ± 14 μmol h −1 cm −2 ) at the electrolytic potential of −1.70 V for electrochemical reduction of CO 2 to formate. Polyaniline film was obtained by potentiostatic reduction of pre-completed polyaniline nanowires from polymerizing aniline on Ni foam. Then the spontaneous oxidation of base polyaniline was used to promote the reduction of tin deposition on its surface.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Guo-Duo Yang,Bing Li,Yi-Han Song,Lei Ding,Shen-Gen Gong,Xing-Long Wu,Jing-Ping Zhang,Yan-Fei Li,Hai-Zhu Sun
Lithium metal anode with high theoretical capacity has attracted lots of attention, but dendrite growth results in poor cyclic stability during the process of repeated plating/stripping. Herein, a scaffold constructed by surface growth of hierarchical lithiophilic acicular CoNiO 2 on the porous Ni foam (NF@CoNiO 2 ) is synthesized and used to construct three-dimensional (3D) host for lithium metal anode. The experimental results show that the lithium dendrite growth is effectively inhibited and satisfactory cycling performance is achieved. Benefiting from the stable lithiophilic sites, good conductivity from the NF, large porosity, and high strength 3D structure, the host enable Li||NF@CoNiO 2 @Li cells to deliver low hysteresis voltage (7.7 mV) and ultra-long cycling stability (more than 2800 h, 1400 cycles) at 1 mA cm −2 with a capacity of 1 mAh cm −2 . The full cells configured the NF@CoNiO 2 @Li anode with LiFePO 4 still display a reversible discharge capacity of 126.2 mAh g −1 after 140 cycles with a Coulombic efficiency of 92.5% at 1C. This work paves a feasible way to construct the lithiophilic skeleton for dendrite-free lithium metal anode.
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
TRANSITION METAL CHEMISTRY
·
2023
·Vol. 48
·期 2
·125-133
·
IF 1.7
Hu Yi,Xu Jingsong,Zhang Tianzhu,Zhong Hang,Chen Jun,Liu Xinai,Pan Qifa,Liu Ruidong,Jiang Chunli,Chen Jun
Electrocatalytic water splitting to produce hydrogen is a promising route to provide green hydrogen on a large scale. To explore non-noble metal electrocatalysts with high performance is still a challenge. Herein, a one-step electrodeposition way is developed to construct the heterostructural (NiO-La 2 O 3 )/(Ni-La)/NiO/Ni electrocatalysts on Ni foam. The dark Ni-La coating was prepared by co-electrodeposition from an aqueous solution containing LaCl 3 and NiCl 2 with a molar concentration ratio of 1:5. Among these heterostructural Ni-based electrocatalysts, an excellent HER activity is achieved: an overpotential of 22 mV at the current density of 10 mA cm −2 in 1 M KOH solution. It is demonstrated that the introduction of La significantly reduces the overpotential for HER. The higher the La content in the Ni-La coating of these electrocatalysts, the better the electrocatalytic HER performance was exhibited. This work provides a facile and inexpensive route to prepare Ni-La coating on electrodes in an aqueous solution.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Ran Duan,Yejun Li,Shen Gong,Yonggang Tong,Zhou Li,Weihong Qi
The development of industrial application of water splitting demands simple and effective methods for the preparation of highly efficient electrocatalysts that are inexpensive and robust. Herein, we report a simple activation method to decorate 3D cobalt iron oxyhydroxide (CoFe-OOH) nanosheets on Co 2 P nanoparticles with Ni foams (NF) as substrates. The synthesized catalysts exhibit excellent activity for electrochemical oxygen evolution reaction due to the hierarchical heterostructures and synergistic effects of CoFe-OOH and Co 2 P. The as-prepared catalysts require a low overpotential of 199 mV to deliver 30 mA cm −2 in oxygen evolution reaction in 1 M KOH with a small Tafel slope of 39 mV dec −1 , indicating favorable kinetics during electrolysis. The synthesized catalysts are further used as cathode and anode for overall water splitting, which only requires a cell voltage of 1.60 V at a current density of 30 mA cm −2 . This work provides new insights on the preparation of efficient electrocatalysts for overall water splitting, which may have the potentials for industrial water electrolysis.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）