Metals
·
2023
·Vol. 13
·期 3
·518
·
IF 2.9
Weigang Zhao,Cuirong Liu,Xu Yin
The sodium battery is one of the best energy storage technologies due to its abundant resource reserves and excellent energy storage ability. As a two-dimensional layered transition metal, molybdenum selenide (MoSe2) has large interlayer spacing and a high theoretical capacity (470 mAh∙g−1). Its structure is suitable for the negative electrode of sodium-ion batteries, with a large ionic radius and slow ion diffusion kinetics. However, it is difficult for the rate capability and cycling performance of MoSe2to meet practical needs due to a weak intrinsic electron transport ability and volume expansion during sodium absorption. The hydrothermal synthesis method was used to synthesize the MoSe2complex based on boron and nitrogen dual-doped 3D carbon fibers obtained from bacterial cellulose membranes (MoSe2/N&B-BCM) for sodium batteries. Additionally, electrochemical analysis and experimental characterization were performed. In summary, the experimental analysis shows that MoSe2/N&B-BCM has excellent conductivity, structural integrity, cyclability (328 mAh∙g−1after 100 cycles at a 0.5 c constant rate), and rate stability.
研究领域:
材料科学
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电化学
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能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Fangfang Du,Gan Li,Xiaojuan Gong,Guo Zhonghui,Shaomin Shuang,Ming Xian,Chuan Dong
We rapidly synthesized N,P-dual-doped carbon dots (N,P-CDs) via the acid-base neutralization spontaneous heat using a simple blend of phthalic acid, 1,2-ethylenediamine, and concentrated phosphoric acid. The approach is automatic without external heat treatment to speedily produce dozens of N,P-CDs, which refrain high temperature, sophisticated manipulations, and long reaction times. As-fabricated N,P-CDs with excellent luminescent properties, superior biocompatibility and respectable fluorescence quantum yield (QY) of 15% have been employed for the development of a label-free multifunctional fluorescence sensing platform for the detection of Mn(VII), temperature sensing and cellular imaging. Mn(VII) is able to effectively quench the fluorescence of N,P-CDs based on inner filter effect (IFE) because the absorption bands of Mn(VII) can perfectly overlap the emission and excitation wavelengths of N,P-CDs. The system had high selectivity toward Mn(VII) and the detection limit was 48.3 nM in the broad linear span from 10 μM to 200μM. Moreover, the N,P-CDs were extended for sensing Mn(VII) in living cell due to favorable biocompatibility and negligible cytotoxicity. Furthermore, the sensors showed a linear and reversible variation of emission intensity for a temperature range from 25℃ to 80℃, with a sensitivity of −1.79% per ℃. The practical implications of N,P-CDs for Mn(VII) detection have been demonstrated in Teas leaves and Medicinal herbs samples with satisfactory results.
研究领域:
分析化学
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生物医学工程
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xiao-Man Cao,Yi-Feng Shao,Yan-Cun Dong,Qingguo Zhang,Hao Ge,Daliang Liu,Qiong Wu,Zhi-Jia Sun
The unique structure and strong interaction of multiphase hybrid materials have garnered significant attention as prospective candidates for electrode materials in the realm of energy storage. The present study presents a rational design of a functional NiSe 2 -CoSe 2 /N, B double-doped carbon hybrid composite (NCS/C NB ), resulting in the emergence of various novel cooperative regulatory mechanisms involving: (i) the heterogeneous structure of NiSe 2 and CoSe 2 generates built-in electric fields to increase electron mobility; (ii) the incorporation of polyatomic double-doped carbon (N, and B) expedites electron transfer rate; intriguingly, (iii) ionic liquids not only serve as polyatomic dopants in the reaction system but also influence the microstructure of the composite. Benefiting from these synergistic effects, the NCS/C NB hybrid exhibits remarkable charge storage capacity and rapid electrochemical kinetics, driven by its multi-fold hollow structure and multicomponent cooperative modulation. The capacity (682 C g −1 at 1 A g −1 ) and rate performance of NCS/C NB surpass those of other monometallic selenides (NiSe 2 /N, B co-doped carbon (NS/C NB ) and CoSe 2 /N, B co-doped carbon (CS/C NB )) within the same system. In the meantime, an asymmetric device using NCS/C NB as the cathode material performs admirably, displaying an exceptional energy density (51.3 Wh kg −1 at 1.28 kW kg −1 ). The present research provides valuable perspectives for the innovative design and fabrication of advanced electrode materials exhibiting exceptional electrochemical properties. We firmly believe that hollow structures featuring multiple cooperative regulatory mechanisms and abundant folds will garner significant attention.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 30
·1801527
·
IF 13.325
Baocang Liu,Huan Li,Bo Cao,Jianing Jiang,Rui Gao,Jun Zhang
Development of highly active and stable electrocatalysts is a key to realize efficient hydrogen evolution through water electrolysis. Here, the development of a 3D self-supported integrated electrode constituting few layered N, P dual-doped carbon-encapsulated ultrafine MoP nanocrystal/MoP cluster hybrids on carbon cloth (FLNPC@MoP-NC/MoP-C/CC) is demonstrated. Benefiting from novel structural features including fully open and accessible nanoporosity, ultrasmall size of MoP-NCs on MoP-Cs as well as strong synergistic effects of N, P dual-doped carbon layers with MoP-NCs, the FLNPC@MoP-NC/MoP-C/CC as a 3D self-supported binder-free integrated electrode exhibits extraordinary catalytic activity for the hydrogen evolution reaction (HER) with extremely low overpotentials at all pH values ( j = 10 mA cm −2 at η = 74, 106, and 69 mV in 0.5 m H 2 SO 4 , 1.0 m PBS, and 1.0 m KOH electrolytes, respectively). To the best of our knowledge, the ultrahigh electrocatalytic performance represents one of the best MoP-based HER electrocatalysts reported so far. Additionally, few layered N, P dual-doped carbon can effectively prevent MoP-NC/MoP-C from corrosion, making the FLNPC@MoP-NC/MoP-C/CC exhibit nearly unfading stability after 50 h testing in acidic, neutral, and alkaline media, which shows great promise for electrocatalytic water splitting application.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Shuyun Wan,Xi Liu,Likang Fu,Chengbao Zhou,Hongyi Chen,Guanghui Li,Shiyue Cao,Qiming Liu
Stannous sulfide (SnS) with low-cost and high theoretical specific capacity possesses enormous potential in the application of lithium-ion batteries (LIBs). However, the sluggish Li ion diffusion kinetics and severe volume variation of SnS, result in inferior rate capability and poor cycling stability. Hollow SnS microflower spheres coated with N, S dual-doped carbon (H-SnS@NSC) are constructed through a facile hydrothermal reaction , polydopamine encapsulation and subsequent carbonization process. Such rational hollow structure is conducive to enhance the structural stability of the material. More importantly, N, S dual-doped carbon is synergistically coupled with SnS, which can greatly improve the electrons/ions kinetics and mitigate the volume expansion. As consequence, the H-SnS@NSC composite electrode exhibits an admirable specific capacity of 778.5 mAh g −1 at 0.5 A g −1 after 400 cycles. It still remains a specific capacity of 633.8 mAh g −1 after 800 cycles even at 1.0 A g −1 , corresponding to 81.7% of initial capacity. After being assembled into a full cell, the device delivers a stable capacity of 317 mAh g −1 at 0.1 A g −1 . This work manifests that morphology and structure engineering have bright prospects in promoting the practical applications for metal sulfides.
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
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Shan Huang,Erli Yang,Yi Liu,Jiandong Yao,Wei Su,Qi Xiao
Heteroatom doping of carbon dots (CDs) can efficiently tune the structure of electronic energy levels and modulate the photochemical properties of CDs. However, the reported synthesis routes of heteroatom-doped CDs are complicated and rigorous. Herein, a simple and rapid low-temperature heating strategy was applied to synthesize fluorescent nitrogen and phosphorus dual-doped CDs (N,P-CDs) using sucrose as carbon source, and 1,2-ethylenediamine (EDA) and phosphoric acid as dopants, respectively. These N,P-CDs exhibit excellent fluorescent stability over wide pH range solutions (4–11), ultrahigh ion strength (3 M KCl), and longtime UV light irradiation (3 h continuously), which makes these N,P-QDs promising good candidates for fluorescent probes. These N,P-CDs showed excellent biocompatibility, multicolor cellular imaging, and non-cytotoxicity to human hepatocellular carcinoma HepG2 cells even at 500 μg/mL levels for 48 h incubation. These N,P-CDs exhibited a strong blue emission and a sensitive response to hemoglobin. The N,P-CDs based fluorescent probe was then applied to sensitively determine hemoglobin with a detection limit of 0.29 nM. Notably, it was also applied for label-free detection of hemoglobin in human urine samples and human blood samples, which indicated its potential applications in clinical diagnosis and other biologically related study.
研究领域:
生物医学工程
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分析化学
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2021
·Vol. 16
·期 15
·2146-2153
·
IF 4.568
Liling Lei,Yiwei Zheng,Xichen Zhang,Yutian Su,Xi Zhou,Shishan Wu,Jian Shen
Graphical A new zinc-ion hybrid capacitor assembled by using a Zn@annealed ZIF-8 anode and ZIF-8 derived C cathode provides a capacity of 135.5 mAh g −1 and an energy density of 108.4 Wh kg −1 with a power density of 800 W kg −1 at 1.0 A g −1 . Zn is a promising anode for aqueous energy storage owing to it intrinsic superior properties such as large capacity, abundant reserves, low potential and safety. But, the growth of dendrites during charge and discharge leads to a decrease in reversibility. In addition, further development of zinc-ion hybrid capacitors (ZICs) is seriously challenging because of the lack of an exceptional cathode. Herein, we use ZIF-8 annealed at 500 °C (annealed ZIF-8) as a host material for stable and dendrite-free Zn anodes. Utilization of annealed ZIF-8 results in dendrite-free Zn deposition and stripping as a result of its porous construction, which contains trace Zn. Furthermore, we firstly proposed innovative N,O dual-doped carbon which was designed by the derived ZIF-8 (ZIF-8 derived C) as cathode for high-energy and power-density ZICs. The new ZIC assembled by Zn@annealed ZIF-8 anode and ZIF-8 derived C cathode provides a capacity of 135.5 mAh g −1 and an energy density of 108.4 Wh kg −1 with a power density of 800 W kg −1 at 1.0 A g −1 . In addition, it shows outstanding cycling stability of 91% capacity retention after 6000 cycles at 5.0 A g −1 . Moreover, the solid-state ZICs can drive LEDs and smart watches. This ZIC holds promise for the practical application of supercapacitors.
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 Materials Chemistry A
·
2020
·Vol. 8
·期 28
·14287-14298
·
IF 11.301
Huihui Lv,Xubin Zhang,Fumin Wang,Guojun Lv,Tiantian Yu,Minglian Lv,Jiawei Wang,Yi Zhai,Jiaqi Hu
The successful design of a hybrid supercapacitor with high power and energy density is mainly based on innovative materials and unique structures. Herein, self-supported Ni–Co(CO3)0.5(OH)·0.11H2O@MnNiCo–OH (Ni–CCH@MnNiCo–OH) with a hollow core/shell cactus-like structure was synthesized as a battery-type positive electrode and KOH-activated ZIF-67 derived Co, N dual-doped hierarchical ZIF-67-C-KOH was prepared as a capacitive-type negative electrode. Benefiting from the optimized ZIF-67-template modification and polymetallic co-deposition tactics, the positive electrode exhibits an outstanding specific capacity of 8.2 C cm−2 at 1.5 mA cm−2 (1029.3 C g−1 at 1 A g−1) and an impressive cycling retention of 88% after 3000 cycles at 20 mA cm−2, which are better than those of Ni–Co3O4@ZIF-67-Co3O4, Ni–CCH@NiCo–OH and Ni–CCH@MnCo–OH electrodes. Likewise, ZIF-67-C-KOH profits from the nitrogen-rich and porous properties of the precursor and can attain a specific capacitance of 262.4 F g−1 at 1 A g−1 as well as an excellent rate performance of 82% at 10 A g−1. The assembled Ni–CCH@MnNiCo–OH//ZIF-67-C-KOH hybrid device has a maximum voltage window of 1.8 V and achieves a specific capacitance of 187.3 F g−1 at 1 A g−1, a high energy density of 84.29 W h kg−1 at a power density of 900 W kg−1 as well as a fantastic stability up to 5000 cycles (74.91% retention at 2 A g−1), showing enormous potential in energy-storage applications.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Qian Luo,Caili Xu,Qian Chen,Jie Wu,Yi Wang,Yun Zhang,Guangyin Fan
Pt-group metal phosphides are widely utilized as efficient electrocatalysts for hydrogen evolution reaction (HER), whereas most of the synthetic strategies are complicated, dangerous, and toxic with the use of large amount of nitrogen (N) and/or phosphorus (P) sources. Here, we report the synthesis of ruthenium phosphide nanoparticles (NPs) confined into N/P dual-doped carbon by pyrolyzing self-prepared ruthenium-organophosphine complex using 1,3,5-triaza-7-phosphadamantane (PTA) as the ligand and N/P sources. The achieved S–RuP 2 /NPC displayed excellent electrocatalytic activity (overpotentials of 19, 37, and 49 mV in alkaline, neutral, and acidic media, respectively, at 10 mA cm −2 ) toward HER at all pH ranges. The high performance of S–RuP 2 /NPC must be ascribed to the homogeneously distributed and P-rich RuP 2 NPs with the diameter of 3.29 nm on the NPC surface, which can considerably improve the atom utilization for HER. The present synthetic strategy not only avoids the use of additional N/P sources but also the generation of flammable and toxic PH 3 gas. This synthetic strategy can be extended to prepare other traditional metal phosphides for electrocatalytic applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2018
·
IF 0
Tingting Liu,Bomin Feng,Xiuju Wu,Yanli Niu,Weihua Hu,Chang Ming Li
It is desirable yet challenging to develop highly active and durable hydrogen evolution reaction (HER) electrocatalysts with Pt-comparable activity for future energy devices. In this work, we report Ru2P nanoparticle decorated P/N dual-doped carbon nanofibers on carbon cloth (Ru2P@PNC/CC-900) as a highly efficient and durable hierarchical HER electrocatalyst in both acidic and alkaline media. Electrochemical tests show that this Ru2P@PNC/CC-900 possesses Pt-comparable HER activity to support 10 mA cm–2 HER current density at low overpotential of 15 and 50 mV in acidic and alkaline condition, respectively. Density functional theory calculations reveal that coupling Ru2P nanoparticles with heteroatom-doped carbon fibers leads to enhanced intrinsic HER activity. The integrative hierarchical architecture further endows high surface areas with good mechanical robustness to support abundant catalytically active sites and possesses excellent electrical conductivity and efficient access for mass transportation to facilitate the HER process.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Bo Xu,Xiaomei Wang,Xiaodong Yang,Zhiming Chen,Yiqiang Sun,Qisheng Liu,Cuncheng Li
Exploring of efficient electrocatalysts based on nonprecious metals is of great importance for the development of hydrogen energy and related energy conversion technologies. Metallic Ni 3 Fe nanoarray is firstly fabricated on carbon cloth as efficient oxygen evolution electrocatalyst. Co, N-dual doped carbon shell derived from metal organic framework is coated on the Ni 3 Fe nanoarray to enhance electrocatalytic activity and stability. The as-prepared composite catalyst only needs a low overpotential of 170 mV to drive 10 mA cm −2 current density in alkaline solution, and an overpotential of 370 mV in carbonate buffer solution. Moreover, the catalyst exhibit excellent durability in both alkaline and carbonate electrolyte. Good conductivity, rich active sites, fast electron transport process and synergistic effect between Ni 3 Fe and the doped carbon together contributes to the efficient catalytic performance. This synthesis approach provides a new way to develop efficient nonprecious metal based electrocatalysts for water oxidation and other energy-related applications.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Guizhen Liu,Shanshan Zhang,Yutian Cai,Yongzhi Cheng,Yingli Zhu,Pingan Chen,Hui Luo,Xiangcheng Li,Fu Chen
Flexible manipulations of morphology and composition have been considered as an art to achieve excellent microwave absorption performance for absorbers derived from metal-organic frameworks (MOFs). In this work, a strategy combining ligand-exchange induced hollow engineering and high-temperature one-step sulfuration has been proposed to fabricate the Co 9 S 8 /Co@N, S dual-doped carbon-based absorbers with tailored solid, yolk-shelled and entirely hollow polyhedral morphologies. The progressive hollow engineering not only enables composition control in the sulfuration process, but also endows the proposed absorbers with superior microwave absorption capacity due to the enhanced conductivity loss and Maxwell-Wagner polarization as well as optimized impedance matching. The yolk-shelled Co 9 S 8 /Co@N, S dual-doped carbon-based composite achieves a broad effective absorption bandwidth of 5.13 GHz at 1.88 mm with 20 wt% loading and realizes a minimum microwave loss of − 51.78 dB @ 11.63 GHz with 2.37 mm. This work reveals that the joint strategy of ligand-exchange induced hollow engineering and gas-solid reactive thermal process is an effective path to construct high-efficient lightweight multi-interfacial microwave absorbers for addressing the electromagnetic pollutions.
研究领域:
材料科学
·
电磁学
✓ 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）