Journal of Materiomics
·
2021
·
IF 6.425
Xiaobin Liu,Fanfan Liu,Xudong Zhao,Li-Zhen Fan
The development of dual-function anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) is exceedingly essential. Herein, with rationally designed hierarchical metal-organic framework (MOF)@MXene as a precursor, a novel sandwich-like CoP-NC@Ti 3 C 2 T x composite has been successfully fabricated by the following phosphorization reaction. As anode material for LIBs, the CoP-NC@Ti 3 C 2 T x composite exhibits remarkable electrochemical performance with high-rate capability (147.8 mAh g −1 at 2000 mA g −1 ; 245.6 mAh g −1 at 100 mA g −1 ) and ultralong cycling life (2000 cycles with a capacity retention over 100%). For SIBs, it delivers a discharge capacity of 101.6 mAh g −1 at a current density of 500 mA g −1 after 500 cycles. The well-designed sandwich-like composite effectively supports the easy access to electrolyte, facilitate the Li/Na ion transportation, and protect the active material from pulverization upon long cycling. In addition, the electrochemical reaction kinetics and Li-migration kinetics of the CoP-NC@Ti 3 C 2 T x composite have been pioneeringly illuminated by pseudocapacitive behavior calculation and density functional theory (DFT) computations, respectively. This work sheds light on the rational design and development of MOF/MXene-derived dual-function anode materials for Li/Na-storage.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Fengjin Yi,Jiayu Wang,Weiliang Liu,Jinshui Yao,Mei Li,Chunsheng Li,Yan Sun,Jiaxi Cui,Manman Ren
The sluggish redox reaction kinetics and “shuttle effect” of lithium polysulfides (LPSs) impede the advancement of high-performance lithium-sulfur batteries (LSBs). Transition metal phosphides exhibit distinctive polarity, metallic properties, and tunable electron configuration , thereby demonstrating enhanced adsorption and electrocatalytic capabilities towards LPSs. Consequently, they are regarded as exceptional sulfur hosts for LSBs. Moreover, the introduction of a heterogeneous structure can enhance reaction kinetics and expedite the transport of electrons/ions. In this study, a composite of hollow CoP-FeP cubes with heterostructure modified carbon nanotube (CoFeP-CNTs) was fabricated and utilized as sulfur host in advanced LSBs. The presence of carbon nanotubes (CNTs) facilitates enhanced electron and Li + transport. Meanwhile, the active sites within the heterogeneous interface of CoP-FeP suppress the “shuttle effect” and enhance the conversion kinetics of LPSs. Therefore, the CoFeP-CNTs/S electrode exhibited exceptional cycling stability and demonstrated a capacity attenuation of merely 0.051 % per cycle over 600 cycles at 1C. This study presents a highly effective tactic for synthesizing dual-acting transition metal phosphides with heterostructure, which will play a pivotal role in advancing the development of efficient LSBs.
研究领域:
材料科学
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电化学
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能源存储
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jiahui Jiang,Bingbing Gong,Guancheng Xu,Ting Zhao,Hui Ding,Yuying Feng,Yixuan Li,Li Zhang
CeO 2 has been identified as a significant cocatalyst to enhance the electrocatalytic activity of transition metal phosphides (TMPs). However, the electrocatalytic mechanism by which CeO 2 enhances the catalytic activity of TMP remains unclear. In this study, we have successfully developed a unique CeO 2 -CoP-1–4 multishell microsphere heterostructure catalyst through a simple hydrothermal and calcination process. CeO 2 -CoP-1–4 exhibits great potential for electrocatalytic oxygen evolution reaction (OER), requiring only an overpotential of 254 mV to achieve a current density of 10 mA cm −2 . Moreover, CeO 2 -CoP-1–4 demonstrates excellent operating durability lasting for 55 h. The presence of CeO 2 as a cocatalyst can regulate the microsphere structure of CoP, the resulting multishell microsphere structure can shorten the mass transfer distance, and improve the utilization rate of the active site. Furthermore, in situ Raman and ex situ characterizations, and DFT theoretical calculation results reveal that CeO 2 can effectively regulates the electronic structure of Co species, reduces the reaction free energy of rate-limiting step, thus increase the reaction kinetic. Overall, this study provides experimental and theoretical evidence to better comprehend the mechanism and structure evolution of CeO 2 in enhancing the OER performance of CoP, offering a unique design inspiration for the development of efficient hollow heterojunction electrocatalysts.
研究领域:
材料科学
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电化学
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催化
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Jie He,Wei Xiong,Fupeng Liu,Zhicong Ni,Lin Zeng,Jiaming Liu,Xue Li
Transition metal phosphides (TMPs) have emerged as promising high-capacity anode materials for lithium-ion batteries (LIBs). However, their practical application remains constrained by the dual challenges of intrinsic low conductivity and structural degradation during cycling. In this study, CoP/C composites with hollow spherical (denoted as s-CoP/C) and sea urchin-like (u-CoP/C) morphologies were synthesized in a morphology-controlled manner using sodium citrate as a structure directing agent, aiming to elucidate the structure-performance relationship in lithium storage. Systematic characterization reveals the hollow spherical architecture of s-CoP/C effectively enhances charge transfer kinetics and buffered volume variations during cycling, outperforming its u-CoP/C counterpart. As a result, s-CoP/C delivered a stable reversible specific capacity of 527.5 mAh g −1 after 600 cycles at 1 A g −1 . Kinetic analysis demonstrates a dominant pseudocapacitive contributes of 85.6 % at a sweep rate of 1.5 mV s −1 . In addition, robust interfacial chemical bonding between CoP and carbon matrix through C–P and Co– O –C linkages ensures structural integrity during prolonged cycling. This work establishes a synergistic strategy combining morphological engineering with interfacial optimization to develop durable TMP-based anodes for advanced energy storage systems.
研究领域:
材料科学
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纳米技术
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电化学
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能量存储
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Energy & Fuels
·
2017
·Vol. 1
·期 10
·2172-2180
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IF 0
Xiuling Fan,Xiaoyan Wang,Weiyong Yuan,Chang Ming Li
Highly active, durable, and low-cost hydrogen evolution reaction (HER) catalysts are critical for large-scale energy storage in the form of hydrogen through water splitting but their fabrication presents great challenges. Herein we report the synthesis of a novel 3D hierarchical nanoporous CoP nanoflowers/pristine graphene interconnected network structure via diethylenetriamine (DETA)-mediated self-assembly, in which DETA promoted the uniform dispersion of graphene and the nucleation of the CoP precursor on graphene, the seed aggregation facilitated the formation of nanoflowers and a 3D network, and the gas release during the low-temperature phosphidation produced nanopores inside the nanoflowers. This nanoarchitecture shows an onset potential of −0.014 V, an overpotential of 98.1 mV to achieve 10 mA cm−2, a Tafel slope of 40.9 mV dec−1, and an exchange current density of 0.119 mA cm−2. The onset overpotential, overpotential to achieve 10 mA cm−2, and Tafel slope are all among the lowest reported for non-noble metal hydrogen evolution reaction (HER) catalysts, and the exchange current density also compares favorably to those of most reported HER catalysts. In addition, the catalyst exhibits excellent durability with negligible loss in current density after 2000 cyclic voltammetry (CV) cycles (+0.01 to −0.17 V vs. the RHE, at a scan rate of 100 mV s−1) or 23.5 h of chronoamperometric measurement at an overpotential of 98.1 mV, and a high faradaic efficiency of close to 100%. This work not only creates a high-performance and inexpensive HER electrocatalyst by utilizing the great advantages of 3D hierarchically nanostructured networks, but also develops a facile and economical strategy for the self-assembly of hierarchical nanostructures and offers scientific insight into its mechanism.
研究领域:
材料科学
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电化学
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纳米技术
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能源存储
✓ 已验证
产品关联
DOI
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Zhe Guan,Lili Bo,Jiayao Zhu,Zhijie Feng,Qizhao Wang,Yupeng Li,Jianmin Gou,Xiaolu Yang,Fang Nian,Jinhui Tong
The development of efficient bifunctional electrocatalysts for overall water splitting is crucial for sustainable hydrogen production. In this work, we introduce a novel CoP/Co 3 O 4 /N-doped carbon nanofiber (CoP/Co 3 O 4 /N-CNFs) catalyst, synthesized through a combination of electrospinning, carbonization, oxidation, and phosphorization. The resulting heterostructure exhibits outstanding bifunctional electrocatalytic activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The key innovations include the interface effect and synergistic interactions between CoP and Co 3 O 4 , enhanced by nitrogen doping and abundant oxygen vacancies, which significantly improve the catalyst's intrinsic activity, electrochemical surface area, stability, and near-unity Faraday efficiency. In situ structural evolution during electrolysis leads to the formation of active Co(OH) 2 and CoOOH species, further enhancing catalytic performance. The optimal CoP/Co 3 O 4 /N-CNFs-370-1:40 catalyst demonstrates exceptional HER and OER performances, requiring overpotentials of just 79 mV and 287 mV at 10 mA·cm −2 respectively, which is superior to many analogous non-noble electrocatalysts reported. Density functional theory (DFT) calculations reveal that the CoP/Co 3 O 4 heterojunction facilitates efficient charge transfer and optimizes the adsorption of reaction intermediates by modulating the d-band center, which accounts for the superior catalytic activity. This work offers a promising strategy for designing efficient non-precious bifunctional electrocatalysts for water splitting.
研究领域:
材料科学
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催化
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电化学
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纳米技术
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能量转换
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氢气生产
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Lili Xiao,SiYan Zheng,Kaixiu Yang,Jiaxing Duan,Jin Jiang
Design of catalysts with unique structures in enhancing electrochemical activity and stability has still been pursued. An eco-friendly method for preparing CoP with improved electrochemical performances was proposed in this work. A novel P-doped bimetallic [email protected] ( [email protected] ) was prepared as the precursor for constructing of [email protected] /NCS, in which CoP nanospheres coated with carbon layers ( [email protected] for short) were well-dispersed on N-doped carbon spheres (NCS for short). P was strategically pre-introduced into [email protected] for preparing of [email protected] through the selective phosphorylation on ZIF-8 shell. DA was selected to investigate the electrochemical properties of [email protected] /NCS. Glassy carbon electrode (GCE) modified by [email protected] /NCS exhibited excellent properties in detection of DA by square wave stripping voltammetry (SWV), that a high sensitivity of 9.4 μA μM −1 , and low limit of detection of 0.03 μM. In addition, [email protected] /NCS showed enhanced performances on electrocatalytic oxidation of DA than that of CoP/C prepared based on ZIF-67 by the common phosphorization method reported in literatures. Moreover, a wide linear range from 5.0 μM to 400.0 μM was achieved at [email protected] /NCS/GCE by amperometric i-t. The practical application of CoP/NCS/GCE was evaluated by detection of DA in human serum. The satisfactory recoveries in diluted serum demonstrated the promising application of [email protected] /NCS.
研究领域:
材料科学
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电化学
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纳米技术
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 9
·2714-2727
·
IF 5
Zhiqi Guo,Yao Tian,Guangjin Dou,Ye Wang,Jiaping He,Hao Song
Photocatalytic pure water splitting to produce H2 with a two-electron process is an effective and more kinetically favorable method to obtain clean energy. Herein, a CoP decorated 2D/2D red phosphorus/B doped g-C3N4 (CoP/RP/BCN) type II heterojunction is synthesized to realize photocatalytic pure water splitting via a two-electron process. The optimal ternary CoP/RP/BCN photocatalyst displays a prominent H2 yield of 166.2 μmol h−1 g−1, which is 207.8-fold greater than that of g-C3N4. The deep insight into the photocatalytic mechanism of CoP/RP/BCN reveals that the improved photocatalytic efficiency is ascribed to the synergistic effect of extended light absorption, accelerated charge transfer, and increased active reaction sites due to the novel heterostructure RP/BCN and co-catalyst CoP loaded. The introduction of B facilitates the intrinsic charge excitation and increases the work function of the carbon nitride framework, promoting charge transfer and heterojunction formation. With a phosphorization reaction, RP nanosheets tightly combine with BCN to enhance the visible-light absorption and construct the 2D/2D type II heterojunction. The difference in the work function between RP and BCN leads to band bending in the interface of the heterojunction, which induces an opposite migration of electrons and holes to enhance electron–hole pair separation. Moreover, CoP reduces water adsorption energy and provides H2 generation sites, facilitating the final step of pure water splitting to produce H2. This work proposes a promising strategy to achieve highly effective photocatalytic pure water splitting without any sacrificial reagents.
研究领域:
材料科学
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化学
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能源科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
BIOINORGANIC CHEMISTRY AND APPLICATIONS
·
2022
·
IF 4.724
Yuqin Yang,Junjie Miao,Zhendong Yin,Weili Hao,Hongmei Shi,Ling Ma,Tiesheng Shi
Efficient extractions of trace antibiotic residues in the environment are a key factor for accurate quantification of the residues. A new nanoporous material, namely, magnetically covalent organic polymer (MCOP, Fe3O4@SiO2-NH2-COP) was synthesized in this work and was used for magnetic solid-phase extraction (MSPE). The combination of MSPE with high-performance liquid chromatography separation together with ultraviolet detection (HPLC-UV) was established as an effective method for the determination of four sulfonamide (SA) residues in surface water surrounding a cattle farm. The synthesized magnetic material was characterized by SEM, TEM, FT-IR, magnetic properties measurement system (MPMS), and nitrogen gas porosimetry. The material possessed many attractive features, such as a unique microporous structure, a larger specific surface area (137.93 m2·g−1) than bare Fe3O4 (24.84 m2·g−1), high saturation magnetization (50.5 emu·g−1), open adsorption sites, and high stability. The influencing parameters, including pH, the used amount of MCOPs, the type of eluent, adsorption solution, and desorption time, were optimized. Under the optimized conditions, the method conferred good linearity ranges (R2 ≥ 0.9990), low detection limits (S/N = 3, LOD, 0.10–0.25 μg·L−1), and satisfactory recoveries (79.7% to 92.2%). The enrichment factor (EF) for the four SAs was 34.13–38.86. The relative standard deviations of intraday (n = 5) and of interday (n = 3) were less than 4.8% and 8.9%, respectively. The equilibria between extraction and desorption for SAs could be reached within 150 s. The proposed method was sensitive and convenient for detecting SA residues in complex environmental matrices, and the successful application of the new MCOPs as an adsorbent was demonstrated.
研究领域:
环境科学
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分析化学
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材料科学
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水质
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Ajing Ren,Bo Yu,Minghua Huang,Zhicheng Liu
Transition metal phosphides have been considered as prospective bifunctional electrocatalysts for overall water splitting due to high activity and excellent stability. In this work, we report a facile strategy for synthesizing high-dispersion cobalt Prussian blue analogue-derived CoP nanoparticles that are decorated on N-doped electrospun porous carbon nanofibers (denoted as CoP@CNF). The CoP@CNF is obtained using electrospinning, subsequent carbonization , and phosphatization treatment. Due to the high conductivity, abundance of electrocatalytic active sites, and the synergistic effect between ultra-fine CoP nanoparticles and porous N-doped electrospun carbon nanofibers, the prepared CoP@CNF catalyst exhibits remarkable activity with low overpotentials (127 and 300 mV) at 10 mA cm −2 , and small Tafel slopes (73.4 and 73.8 mV dec −1 ) for hydrogen evolution reaction and oxygen evolution reaction in alkaline electrolyte , respectively. A water electrolyzer cell fabricated by applying CoP@CNF as both anode and cathode catalysts needs 1.64 V to achieve 10 mA cm −2 , and exhibits remarkably long-term stability. This work provides useful guidance for the preparation of bifunctional nanocomposite electrocatalysts and further extends the application of Prussian blue analogues in the field of energy conversion.
研究领域:
电化学
·
材料科学
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纳米技术
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能源转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Shiqi Zhang,Ying Cheng,Zhiyuan Ni,Xuefei Lei,Biao Wang,Xuanwen Liu,Rui Guo
Reasonably designing and constructing transition metal based compounds with controllable composition and structure is a promising option for obtaining economically efficient oxygen evolution reaction (OER) electrocatalysts. This paper presents a one-pot self-templated epitaxial growth, phase transition and self-dissolution strategy for constructing hollow nanoboxes/solid nanocubes of CoFe bimetallic Prussian blue analogues (PBAs). The CoFe mixed phosphide with a porous hollow nanoboxes structure obtained after subsequent phosphating heat treatment exhibite enhanced OER electrocatalytic activity in alkaline media, exhibiting a low overpotential of 230 mV and a Tafel slope of 35.5 dec −1 at 10 mA cm −2 , as well as excellent stability for 48 h. The excellent OER activity of CoP-FeP nanoboxes (CoP-FeP NBs) can be attributed to the combination effect between their composition and structure. Structurally, the exquisite porous hollow nanoboxes structure greatly expands the surface area, reduces ion diffusion pathways, and reduces charge transfer resistance. Compositionally, the inner transition metal phosphide exhibits good conductivity and undergoes surface reconstruction during OER, forming high valence Co(Fe)OOH active substances in situ. The strong interface coupling effect of CoOOH/FeOOH optimizes the electronic structure. This work presents a facile and efficient strategy for the construction of PBAs hollow structural materials and the exploitation of low-cost and efficient electrocatalysts.
研究领域:
材料科学
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电化学
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纳米技术
·
催化
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 15
·6270-6284
·
IF 3.5
Wu Hongmei,Liu Baoshan,Zhang Yao,Li Feng,Liu Jing,Zhao Liping,Zhang Peng,Gao Lian
Cobalt-based transition metal phosphides (TMPs) exhibit huge potential as efficient OER electrocatalysts for commercial applications. Zeolitic imidazolate framework-67 (ZIF-67) has been served as an appealing precursor for the synthesis of cobalt-based TMPs owing to its distinctive structural advantages. However, the poor conductivity and structural variability of ZIF-67 affect the materials’ OER electrocatalytic performance. To enhance the structural stability and OER performance of ZIF-67 derived TMPs, in this work, a polyhedral TMP nanocomposite with porous hollow structure, featuring Fe-CoP on the outer shell and CoP nanoparticles within the cavity, was synthesized using ZIF-67 as template. The ZIF-67 served as both Co precursor and structure template, and the [Fe(CN) 6 ] 3− served as precursor of Fe dopant and structure stabilizer. The resulting TMP composite electrode (Fe-CoP) effectively retains the framework of ZIF-67, exhibiting prominently improved OER activity (η 10 = 297 mV) and exceptional stability (over 260 h). The Fe–C≡N–Co bonds positively influence the preservation of the sample’s morphology after phosphorization. Additionally, a ligand-substitution strategy is proposed for the formation of the designed structure. This strategy, regulating the morphology of 3D structured MOFs, offers a new understanding on stabilizing the geometric structure of MOFs and their derivatives as structure templates. Graphical abstract
研究领域:
材料科学
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电化学
✓ 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）