Journal of Energy Storage
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2024
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IF 8.9
Zhilong Wang,Zhongcheng Li,Yu Wang,Changjun Zhu,Kanghua Chen
Lithium metal anodes are an ideal candidate material for high energy density lithium-ion batteries. However, the uncontrollable growth of lithium dendrites and infinite volume expansion are a big challenge for the commercialization of lithium metal anodes. In order to realize dendrite-free lithium metal anodes, we prepared N-doped carbon/Si nanoparticles composite film modified Ni foam (NFSC) via a simple impregnation-calcination method as a three-dimensional (3D) lithiophilic skeleton for lithium metal anodes. NFSC has several advantages, including a 3D porous conductive structure, a large specific surface area, uniformly distributed abundant lithiophilic nitrogen-containing functional groups and Si nanoparticles providing abundant lithium nucleation sites. This reduces nucleation overpotential, facilitates uniform lithium deposition, suppresses the growth of lithium dendrites, and significantly improves the cycling stability of lithium metal anodes. As a result, NFSC exhibits low nucleation overpotential and the Li||NFSC half-cell maintains a high Coulombic efficiency (CE) of 99.15 % after 1000 cycles at 1 mA cm −2 and 1 mAh cm −2 . Moreover, the NFSC in a symmetric cell exhibits low polarization voltage of 18 mV together with an ultra-long cycling life of over 2000 h at 1 mA cm −2 and 1 mAh cm −2 . Furthermore, the full cell assembled with LiFePO 4 and NFSC@Li demonstrates superior rate performance and excellent long-term cycling stability. The long-term cycling stability exceeds 2500 cycles at 0.5C, far surpassing that of LiFePO 4 ||Li full cell (600 cycles). This work provides a simple and effective approach to achieve dendrite-free lithium metal anodes.
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高影响因子
ELECTROCHIMICA ACTA
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2024
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IF 5.5
Liang Ding,Roujia Zhang,Peng Zhao,Changsheng Qu
Based on the remediation challenges and practical needs of trichloroethylene (TCE)-contaminated groundwater, this study prepared an Ni-based composite electrode, Pd/Ni(OH) 2 /Ni foam (NF), and evaluates its electrocatalytic degradation effect on TCE in a groundwater environment. Under an applied voltage of –1.3 V versus Ag/AgCl, the TCE removal rate reaches 95% after 3 h of electrolysis. The introduction of Ni(OH) 2 nanoarrays accelerates the electron transport process, shortens the ion transport distance, and significantly increases the electron density of Pd. Furthermore, TCE is rapidly reduced by adsorbed hydrogen radicals on the Pd surface, and the ethane conversion rate reaches 62%. The experimental results show that the electrode can maintain a strong electrocatalytic activity over a wide pH range (3–9) and that it is not affected by common anions, such as Ca 2+ , HCO 3 - , SO 3 2- , or Cl - , in groundwater. Pd/Ni(OH) 2 /NF exhibits a high reactivity after six cycles of use. The remediation mechanism is studied by combining the microscopic characterization of materials, electrochemical activity testing, and process product identification, which provides an effective way of completely degrading chlorinated hydrocarbon pollutants in natural groundwater environment.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
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IF 7.489
Lu Chen,Junrong Zeng,Mengwei Guo,Ruichang Xue,Rongrong Deng,Qibo Zhang
Herein, self-supported Ni 3 S 2 spherical clusters packed with well-defined nanosheets developed on Ni foam (NF) were rationally fabricated via a novel low-temperature solvothermal sulfurization approach in a choline chloride/ethylene glycol (Ethaline)-based deep eutectic solvent (DES). The DES-based sulfurization process drove an interesting time-dependent surface restructuring and phase transformation that occurred on the Ni substrate, leading to the in-situ formation of a Ni 3 S 2 layer with controllable architecture. Pre-deposition of a Ni interlayer on the NF substrate provides more assessable electrochemical surface area and reaction sites, which favored fast crystal nucleation/growth and structural reconstruction. Benefiting from the integrated design and unique 3D interdigital architecture, the optimized Ni 3 S 2 _5/Ni/NF with a sulfurization time of 5 h exhibits a high specific capacitance (specific capacity) of 5,633 mF cm −2 (860.6 μAh cm −2 ) at a current density of 10 mA cm −2 , and maintains 87.7% of initial specific capacitance after 1,000 charge–discharge process at a current density of 20 mA cm −2 . This facile DES-driven solvothermal sulfurization strategy for the fabrication of integrated metal sulfides-based electrode materials could be promising for practical applications in high-performance electrochemical devices.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Desheng Guo,Lingling Wen,Tiantian Wang,Xin Li
A reasonable design of excellent bifunctional catalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is an effective strategy for large-scale hydrogen production. In this study, a two-stage electrodeposition method was used to design and prepare a crystalline-amorphous structure CoMo-P layered particles of different sizes on a nickel foam (NF) substrate. Electron rearrangement at the Co/Co 3 Mo 2 P@CoMoO 4 heterogeneous interface can reduce the reaction energy barrier for HER and OER, and accelerate the catalytic reaction kinetics. The doping of Mo can promote the synergistic effect between Co and Mo, thereby optimizing the Gibbs free energy of hydrogen adsorption. This layered arrangement of different size particles greatly improves the active area of the catalyst, thus increasing the number of active sites of the catalyst. Therefore, the prepared transition metal phosphides (TMPs) CoMo-P/NF catalyst showed excellent catalytic activity and electrolytic water stability in alkaline media. In 1 M KOH solution, achieving a current density of 10 mA cm −2 only required overpotentials of 40 mV for HER and 278 mV for OER, respectively. The cell voltage required for the CoMo-P/NF||CoMo-P/NF electrolytic cell is only 1.53 V at 10 mA cm −2 without iR compensation. The excellent catalytic activity and stability of the CoMo-P/NF catalyst are attributed to its unique layered particle structure, rich crystalline-amorphous interface active sites, and the mechanical stability achieved by firmly anchoring the catalyst to the nickel foam. This study provides a reference for the rapid, efficient, and environmentally friendly preparation of high-activity water splitting catalysts with large surface areas.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2021
·Vol. 31
·期 15
·2009580
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IF 18.808
Guowei Xiong,Yuke Chen,Ziqian Zhou,Fan Liu,Xiaoyu Liu,Linjing Yang,Qilu Liu,Yuanhua Sang,Hong Liu,Xiaoli Zhang,Jin Jia,Weijia Zhou
Electrocatalytic water splitting for the production of hydrogen proves to be effective and available. In general, the thermal radiation synthesis usually involves a slow heating and cooling process. Here, a high-frequency induction heating (IH) is employed to rapidly prepare various self-supported electrocatalysts grown on Ni foam (NF) in liquid- and gas-phase within 1–3 min. The NF not only serves as an in situ heating medium, but also as a growth substrate. The as-synthesized Ni nanoparticles anchored on MoO 2 nanowires supported on NF (Ni-MoO 2 /NF-IH) enable catalysis of hydrogen evolution reaction (HER), showing a low overpotential of −39 mV (10 mA cm −2 ) and maintaining the stability of 12 h in alkaline condition. Moreover, the NiFe layered double hydroxide (NiFe LDH/NF-IH) is also synthesized via IH and affords outstanding oxygen evolution reaction (OER) activity with an overpotential of 246 mV (10 mA cm −2 ). The Ni-MoO 2 /NF-IH and NiFe LDH/NF-IH are assembled to construct a two-electrode system, where a small cell voltage of ≈1.50 V enables a current density of 10 mA cm −2 . More importantly, this IH method is also available to rapidly synthesize other freestanding electrocatalysts on NF, such as transition metal hydroxides and metal nitrides.
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高影响因子
APPLIED SURFACE SCIENCE
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2018
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IF 4.439
Youpeng Li,Miao Liu,Shuang Hou,Pu Wang,Xuexue Pan,Meixiang Xie,Yongxin Chen,Lingzhi Zhao
In this work, a novel urchin-like CuCo 2 O 4 directly grown on three-dimenstional (3D) Ni foam as a binder-free anode materials of lithium-ion batteries via one-step solvothermal method followed by subsequent annealing. The microstructure and phase composition were characterized systematically. The result indicated that the product at a calcination temperature of 550 °C yielded the most outstanding electrochemical properties with incredible reversible specific capacity of 1700 mAh/g after 100 cycles at 200 mA/g and extraordinary rate performance of 1250 mAh/g at 1000 mA/g. The likely contributing factors to the glorious electrochemical performance of the product were related to the unique urchin-like structure containing one-dimenstional (1D) nano-needles, which could tolerate the volume effect during the Li + insertion/extraction process and provide more channels for the transmission of electron and ions, as well as the introduction of Ni foam accelerating the transmission rate of electron.
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高影响因子
ACS Catalysis
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2016
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IF 9.307
Qiaofei Zhang,Xin-Ping Wu,Yakun Li,Ruijuan Chai,Guofeng Zhao,Chunzheng Wang,Xue-Qing Gong,Ye Liu,Yong Lu
A Ni-foam-structured PdNi nanoalloy catalyst engineered from nano- to macro-scales has been successfully fabricated for the catalytic deoxygenation of coalbed methane (CBM). The catalyst was obtainable by embedment of Pd nanoparticles onto Ni-foam substrate via a galvanic exchange reaction method and subsequent in situ activation in the reaction, which was active at low temperature, selective (no CO formation), and oscillation free in this CH4-rich catalytic combustion process. Special Pd@NiO (Pd nanoparticles partially wrapped by tiny NiO fragments) ensembles were formed in the galvanic deposition stage and could merely be transformed into PdNi nanoalloys in the real reaction stream at elevated temperatures (e.g., 450 °C or higher). Density functional theory (DFT) calculations were carried out to reveal the role of Ni decoration at Pd in PdNi nanoalloy catalyst for the CBM deoxygenation. By nature, the Pd–Ni alloying modified the electronic structure of surface Pd and led to a decrease in the O adsorption energy, which can be taken as the activity descriptor for the CBM deoxygenation. A reaction kinetic study indicated that the Ni decoration at Pd by Pd–Ni alloying lowered the apparent activation energy in comparison to the pristine Pd catalyst, while leading to an increase of the reaction order of O2 from −0.6 at Pd catalyst to −0.3. The foam-structured PdNi nanoalloy catalyst thus offered enhanced low-temperature activity and the elimination of oscillating phenomena as the result of a transient balance obtained between the cycles of O2 adsorption/activation and CH4 oxidation.
研究领域:
催化化学
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材料科学
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能源工程
·
计算化学
·
环境化学
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高影响因子
INORGANIC CHEMISTRY
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2023
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IF 4.6
Yating Fan,Weidong Shi,Longhua Li
In electrochemical decomposition of water, the slow kinetics of the anodic oxygen evolution reaction (OER) is a challenge for efficient hydrogen production. Heterointerface engineering is a desirable way to rationally design electrocatalysts for the OER. Herein, we designed and fabricated a nanoparticle flower-like NiCoFe(oxy)hydroxide catalyst in situ grown on the surface of Ni3S2/NF to construct a heterojunction via combining hydrothermal and electrodeposition methods. The heterostructure exhibits a smaller overpotential of 254 mV at a large current density of 100 mA cm–2 in 1 M KOH than that of pristine NiCoFeOxHy/NF (356 mV) and Ni3S2/NF (471 mV). Tafel and electrochemical impedance spectroscopy further showed a favorable kinetics during electrolysis. The role of the substrate Ni3S2 was explored via density functional theory calculations. Our calculations found that SOx on the Ni3S2 surface is a strong nucleophilic group and the synergy effect between Fe and SOx could break *OOH to reduce the Gibbs energy. We also found that the contribution of SOx in sulfates to the OER activity could be negligible. Furthermore, a series of comparative samples were prepared to test this synergy effect. Our experiments indicated that the introduction of Ni3S2 is beneficial. The present contribution provides an important helpful insight into the design and fabrication of novel and highly efficient heterostructure electrocatalysts by introducing nucleophilic groups at the interface.
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高影响因子
ACS Applied Materials & Interfaces
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2020
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IF 8.758
Meysam Khodabakhshi,Shumin Chen,Tian Ye,Hao Wu,Li Yang,Wenfeng Zhang,Haixin Chang
The sluggish oxygen evolution reaction (OER) and costly noble-metal oxide catalysts hinder the vast usage of environmentally friendly water splitting for hydrogen production. Elemental doping by partial replacing of parent metal elements with elements of higher electronegativity is considered to be one of the most efficient strategies to promote the electrocatalytic OER performance. In this work, we synthesize an efficient hierarchical highly wrinkled NiFeCu phosphide nanosheet on nanodendrite Ni3S2/NiF substrates through partial replacement of Cu instead of Ni and Fe in NiFeP@Ni3S2/NiF by using a facile electrodeposition method. The NiFeCuP@Ni3S2/NiF electrocatalyst needs only 230, 282, and 351 mV to reach 10, 50, and 100 mA × cm–2, respectively. Notably, this electrocatalyst shows one of the lowest OER overpotentials at 10 mA/cm–2 for metal phosphides and endured the OER at 20 mA × cm–2 for 18 h with negligible voltage elevation. The X-ray photoelectron spectroscopy (XPS), double-layer capacitance (Cdl) plots, and electrochemical impedance spectroscopy show that the partial Cu doping in NiFeP@Ni3S2/NiF not only can change the electron density around Ni and Fe but also can increase the electrochemically active surface area and conductivity of electrocatalysts.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Yimei Zhang,Zhuang Chen,Lincheng Zhou,Panpan Wu,Yalong Zhao,Yuxian Lai,Fei Wang,Shuai Li
In this study, MnO 2 /MWCNT hybrids, prepared using a solvothermal method, were coated onto Ni foam and then used as a cathode for tetrabromobisphenol A (TBBPA) degradation. The reaction was confirmed to exhibit the pseudo first-order kinetics. Compared with the original Ni foam cathode, the fabricated electrode exhibited higher catalytic activity, attributed to its strong cross-linking and ability to produce catalytic free radicals. Radical scavenger experiments revealed that O 2 − and OH were involved in the decomposition of TBBPA. The effects of current density, pH, catalyst dosage, and initial TBBPA concentration on removal efficiency were further studied. An optimal removal rate of 98.3% was achieved while the rate constant reached values up to 0.07293 min −1 and the debromination rate was more than 75.4% within 60 min. The electrode showed high catalytic performance and low catalyst loss after 10 cycles, indicating its excellent stability and reusability. The probable mechanism and pathway of TBBPA degradation were suggested based on the analysis of intermediate products. It could be inferred that the decomposition of TBBPA involved C C bond breaks (oxidation) and debromination (reduction). The MnO 2 /MWCNT-Ni foam could be a promising cathode material for electrochemical degradation of halogenated organic compounds.
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高影响因子
ACS Applied Materials & Interfaces
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2014
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IF 5.9
Weijun Ke,Guojia Fang,Hong Tao,Pingli Qin,Jing Wang,Hongwei Lei,Qin Liu,Xingzhong Zhao
Nickel sulfide (NiS) nanowall networks have been prepared by a novel one-step hydrothermal method on a nickel (Ni) foam substrate. The Ni foam has a high conductivity and porous structure. To our knowledge, the Ni foam is used as a conductive substrate for the dye-sensitized solar cell (DSSC) for the first time. The Ni foam is used as not only the conductive substrate but also the Ni sources of the reaction. The Ni foam supported NiS prepared by this simple hydrothermal method shows high catalytic activity for reduction of triiodide ions. The DSSC with a transparent conductive oxide (TCO)-free NiS counter electrode (CE) was herein developed and showed a higher power conversion efficiency of 8.55% than that with a TCO supported NiS CE (7.47%) and a TCO supported platinum CE (7.99%).
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高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Honglong Qu,Tiantian Cao,Qiaolin Li,Gang Chen,Hongtao Guan,Chengjun Dong
Reasonably tuning the structure of Ni 2 P based complex electrode is decisive to boost its applications in supercapacitor. Herein, we demonstrate the design and preparation of NiMoO 4 @Ni 2 P nanosheet arrays with unique core–shell architecture on Ni foam (NF) for pseudocapacitor. The directly grown Ni–MOF on NF was used to couple with NiMoO 4 via an ion exchange between BDC 2− and MoO 4 2- , which is crucial to form a stable NiMoO 4 @Ni 2 P/NF core–shell structure during the subsequent phosphatization. The NiMoO 4 @Ni 2 P/NF electrode can deliver a high capacitance of 3655.1 mF cm −2 at 1 mA cm −2 with a remarkable cycling stability (95.35 % over 4000 cycles). Additionally, the assembled NiMoO 4 @Ni 2 P/NF–2//AC/NF device achieves a stable working voltage of 1.7 V and delivers a superior energy density of 0.155 m Wh cm −2 at a power density of 1.705 mW cm −2 . The outstanding performance of pseudocapacitor is mainly ascribed to the stable diffusion channel, rich reactive species and hetero–interface, enabling fast electrochemical reaction kinetics.
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高影响因子
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