ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Mingjie Lei,Yi Zhao,Xiujuan Sun,Yuan Pan,Yadong Liu,Jiayu Kang,Diye Wei,Luyi Zou,Yong Pei
Electrocatalytic urea oxidation reaction (UOR) holds great promise in green energy conversion and pollutant degradation with low energy-consumption. Herein, Fe-NiTe/NiSe 2 nanosheets array with super-hydrophilic/aerophobic surface and enhanced built-in electric field is constructed. The surface hydrophilic/aerophobic properties enabling rapid bubble nucleation and efficient detachment, liberating covered active sites, thus improving the surface adsorption kinetics of urea molecular and OH − . Moreover, Fe incorporation accelerates charge transfer and modulates the built-in electric field at the NiTe/NiSe 2 heterojunction interface. This reduces the surface reconstruction potential and optimizes the occupancy of hybrid anti-bonding (d-δ)* orbitals, leading to the formation of electron-rich region (Fe-NiTe) and electron-deficient region (Fe-NiSe 2 ), which preferentially adsorbs the electron-withdrawing (C═O) and electron-donating (─NH 2 ) groups of urea, respectively, thereby optimizing the adsorption energy of urea molecules. Therefore, the Fe-NiTe/NiSe 2 heterojunction exhibits excellent alkaline UOR performance, requiring only 1.447 V RHE to deliver a current density of 100 mA cm −2 , which it can maintain for over 90 h. The Fe-NiTe/NiSe 2 (+) ∥ Pt/C (-) urea electrolyzer can maintain stable for 150 h at 100 mA cm −2 . This work offers a macro- and microscopic coupling engineering strategy to address the surface and intrinsic properties for alkaline UOR, holding significant practical value for advancing energy-efficient hydrogen production and wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Qing-Lin Liu,Yu-Jie Dong,Yang Cao,Hong-Yan Chen,Dai-Bin Kuang,Cheng-Yong Su
Ni x S y /NiSe 2 hybrid nanoparticle film grown in situ on F-doped SnO 2 (FTO) glass is synthesized by a gentle solvothermal method and used as efficient counter electrode for dye-sensitized solar cells (DSSCs). The two-step strategy involving sulfuration and subsequent selenization reaction using nickel hydroxide as the precursor can effectively avoid the film cracking and detaching thus to obtain a uniform hybrid nanoparticle film with rich catalytic active sites and good electron transport ability. The electrocatalytic activity of hybrid catalyst compared with single NiSe 2 and Ni x S y is investigated in detail by cyclic voltammetry (CV), electrochemical impedance spectra (EIS) and Tafel polarization measurements. Due to the synergistic effect of different components, the hybrid Ni x S y /NiSe 2 exhibits higher electrocatalytic performance for I 3 − reduction. As a result, the DSSCs with Ni x S y /NiSe 2 hybrid electrode shows an impressive higher short circuit photocurrent and power conversion efficiency (8.64%) than that with Ni x S y (7.95%) and NiSe 2 (7.47%) counter electrodes, just a little bit inferior to Pt (9.01%), which indicates that this new kind of material can work as a promising alternative low-cost catalyst for DSSCs or other electrocatalytic applications.
研究领域:
材料科学
·
可再生能源
·
电化学
·
纳米材料
·
太阳能电池
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2022
·
IF 12.545
Linpin Luo,Changyu Xi,Junchen Zhuo,Guangqin Liu,Silong Yang,Ying Nian,Jing Sun,Ming-Qiang Zhu,Jianlong Wang
The nanozyme-based colorimetric strategy for heavy metal detection has broad application prospects nowadays. However, the inefficient recognition capabilities of nanozyme sensors for targets hinder its further application. Herein, the authors synthesize bare nickel selenide (NiSe 2 ) via a one-step hydrothermal reaction , in which the Se element possesses a strong binding ability with mercury (Hg). As expected, NiSe 2 exhibits oxidase-like activity in the presence of Hg 2+ , that is, Hg 2+ can enhance the oxidase-like activity of NiSe 2 . The enhanced mechanism is the accelerated electron transfer between NiSe 2 –Hg 2+ and substrate caused by the formation of Hg–Se bonds. Besides, the oxidase-like activity of NiSe 2 exhibits excellent selectivity, sensitivity and stability in response to Hg 2+ , which enables NiSe 2 –Hg 2+ to efficiently oxidize colorless TMB to blue TMB even in harsh environments. Based on this, a dual-mode colorimetric sensor integrating solution reaction and test paper is developed for the detection of Hg 2+ . In the Hg 2+ concentration range of 10–700 nM, the colorimetric platform presents a liner response to Hg 2+ , which can reach a low LOD of 5.18 nM in solution reaction and 8.42 nM in the test paper. The proposed strategy can also be applied to real water samples with good recovery and excellent self-calibration capability.
研究领域:
分析化学
·
环境科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2022
·
IF 4.383
Zhen Lu,Haidong Zhao,Jujie Luo,Jingyi Wang
Self-supported NiSe 2 nanospheres have been successfully synthesized by a one-step microwave method, and then coated with a layer of reduced graphene oxide (rGO) by a simple dip-coating method. Due to the excellent conductivity and high surface area of rGO, as a battery-type electrode material, the as-prepared NiSe 2 @rGO composite exhibited an excellent specific capacity of 224.75 mAh g −1 at 1 A g −1 , far exceeding that of the NiSe 2 nanospheres (72.5 mAh g −1 at 1 A g −1 ). NiSe 2 @rGO showed good cycling performance, with 78.13% retention of its initial capacity after 5000 cycles. Furthermore, an NiSe 2 @rGO//activated carbon (AC) asymmetric supercapacitor (ASC) showed a high energy density (E) of 25.85 Wh kg −1 at a power density (P) of 730 W kg −1 . The NiSe 2 @rGO//AC showed good capacity retention, maintaining 85.45% of the original value after 10000 cycles.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Jie Zhou,Yundan Liu,Zhen Zhang,Zongyu Huang,Xinhang Chen,Xiaohui Ren,Long Ren,Xiang Qi,Jianxin Zhong
Designing an effective, stabilized catalyst is a key challenge to water splitting for both electrocatalytic hydrogen evolution reaction and oxygen evolution reaction. Recently, the transition metal dichalcogenide has attracted numerous attention and described as an effective and robust alternative to noble metal for hydrogen evolution and oxygen evolution. In this study, a novel structure of two-dimensional sheet-like NiSe 2 nanoarchitecture integrating on three-dimensional carbon cloth has been fabricated via a facile two-step hydrothermal reaction . In addition, we research the phase structures and morphologies of nickel selenides were further controlled by adjusting the reaction temperature. Under certain conditions, orthorhombic NiSe 2 nanosheets can convert into cubic NiSe 2 nanosheets in solution directly. The series of nickel selenides have been investigated in detail by means of X-ray diffraction and scanning electron microscopy analyses, respectively. Electrochemical experiments show the as-prepared pure cubic phase NiSe 2 nanosheets-carbon cloth achieves −10 mA cm -2 at an overpotential of 147 mV (in 0.5 M H 2 SO 4 ) and 42 mV (in 1 M KOH) for hydrogen evolution reaction, respectively. NiSe 2 has an extremely small overpotential of 1.531 V at 40 mA cm −2 in 1 M KOH solution for oxygen evolution reaction. A voltage of only 1.62 V is required to drive 10 mA cm −2 for the two-electrode alkaline water electrolyzer using the cubic NiSe 2 nanosheets on carbon cloth as an anode and cathode. This development provides us a fascinating non-noble-metal bifunctional electrocatalyst toward overall water splitting applications.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Zhiyong Bao,Zhijun Peng,Fujun Chang,Jiewu Cui,Juan Li,Xin Yao,Jun Lv,Guangqing Xu,Jiyan Dai,Yucheng Wu
The practical implementation of lithium–sulfur (Li–S) batteries is still impeded by two fundamental challenges: the low conductivity of lithium sulfide species (Li2S2/Li2S) and the shuttling of soluble lithium polysulfides (LiPSs). To tackle these issues, we propose an efficient polysulfide regulation strategy via a functional separator coated with Bi2Se3@NiSe2 heterostructures anchored on nitrogen-doped carbon nanotubes (N-CNTs). The rationally constructed Bi2Se3@NiSe2 interfaces not only offer strong chemisorption toward LiPSs but also act as highly active electrocatalysts to facilitate their conversion kinetics, particularly the nucleation and decomposition of Li2S. Coupled with the three-dimensional conductive network of N-CNTs, which ensures rapid electron/ion transport, the designed separator significantly suppresses the shuttle effect and enhances redox efficiency. As a result, Li–S batteries equipped with the Bi2Se3@NiSe2/N-CNT-modified separator achieve a remarkable initial discharge capacity of 1418.24 mAh g–1 at 0.1 C and outstanding long-term cyclability with a minimal decay rate of 0.083% per cycle over 500 cycles at 1 C. In situ X-ray diffraction further verifies the reversible phase evolution between α-S8 and Li2S during cycling. This work highlights the potential of bimetallic selenide heterostructures as multifunctional catalytic interlayers and provides a feasible pathway toward advanced separators for durable Li–S batteries.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE CHEMICAL LETTERS
·
2020
·
IF 4.632
Guangmeng Qu,Xixi Zhang,Guotao Xiang,Yunrui Wei,Jiangmei Yin,Zonghua Wang,Xiaoli Zhang,Xijin Xu
Nano-polyhedral NiSe 2 /CoSe 2 (Ni-Co-Se) with hollow architectures are synthesized by selenizing the precursors of Ni-Co bimetallic hydroxides that are directly derived from ZIF-67. The as-fabricated Ni-Co-Se electrodes exhibit high specific capacitance of 1668 F/g at 1 A/g accompanying with outstanding rate capability (about 82.8% retention of the initial capacity at 20 A/g). The corresponding Ni-Co-Se//AC all-solid-state hybrid supercapacitors are assembled by directly using the Ni-Co-Se on carbon fabric as the positive electrode, which deliver high energy density and power density (38.5 Wh/kg at 802.1 W/kg, 32.0 Wh/kg at 8008.8 W/kg), excellent cyclic stability (82.3% retention after 5000 cycle) and robust mechanical flexibility (no obvious attenuation at bending to different angles). This work will provide a new and smart route for constructing transition metal selenides for supercapacitor devices.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 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）