MATERIALS LETTERS
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2024
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IF 2.7
Jianxia Guo,Haichao Li,Shimin Dang
Carbon nanorods exhibit excellent properties in mechanics, electricity, thermology and optics, and have broad application prospects in the frontier of the major areas. In this study, a self-assembly method was employed to synthesize carbon nanorods using sodium hyaluronate (SH) as the carbon source. Using the crystal structure of sodium chloride as a partitioning agent for carbon nanorods micelles. As prepared Samples were characterised and tested using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy. The results demonstrated the successful preparation of SH @ NaCl carbon nanorods, with an average diameter and length of approximately 50 nm and 800 nm, respectively, and L/D ratio of 16. The present research strategy emphasises the significance of macromolecule @ salt self-assembly in the synthesis of carbon nanostructures of varying morphologies in different systems.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
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IF 7.489
Cheng Fang,Ping Hu,Shun Dong,Yuan Cheng,Dongyang Zhang,Xinghong Zhang
The development of high-performance flexible supercapacitor using biomass wastes as raw materials to overcome the high manufacturing cost has attracted excellent interest. Herein, a hierarchical structure of carbon nanorods supported hydrothermal carbons and carbon fibers (CNR/HTC/CFs) with superior electrochemical performance as well as high strength is successfully designed for the first-time using waste straw as a sustainable and economic carbon resource. The straw pyrolysis gases after purification are introduced to support the formation of high specific surface area CNRs via a simple vapor phase growth process. The CNR/HTC/CFs exhibit high mass specific capacitance of 269.47 F g −1 under the scan rate of 3 mV s −1 in three-electrode system. A high energy density of 15.54 Wh kg −1 with the power density of 0.49 kW kg −1 was obtained in the as-assembled all solid-state supercapacitor device with gel electrolyte, whose value retains as high as 6.99 Wh kg −1 with the power density of 10.01 kW kg −1 . The tensile strength of the finally fibers can reach up to 2743 ± 467 MPa, which is sufficient for many practical industrial applications. This work provides a feasible synthetic strategy using sustainable biomass waste as raw materials to prepare high strength and capacitance energy storage devices.
研究领域:
材料科学
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能源工程
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环境科学
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DOI
高影响因子
JOURNAL OF POWER SOURCES
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2024
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IF 8.1
Linfeng Chen,Hongyang Li,Pengsen Qian,Yuqi Wang,Jianjun Zhang,Gaoran Li
Tin oxide, characterized by its exceptional theoretical capacity, emerges as a highly promising alternative anode in the pursuit of high-energy-density lithium-ion batteries (LIBs). However, inherent limitations in conductivity and structural integrity impede the fulfillment of its energy storage potential. Herein, sophisticated SnO 2 -carbon nanorods (SnO 2 /C NRs) derived from a tin-based metal-organic framework are developed for superior lithium storage. The ultrafine SnO 2 nanocrystals are embedded within a hollow and porous rod-like architecture, ensuring fast multidirectional charge transfer and well-accommodated volume variation during the lithiation/delithiation process. Moreover, the integration of the carbon matrix further promotes electron conduction and reinforces the structural integrity towards fast, efficient, and durable electrochemistry. As a result, the SnO 2 /C NRs electrodes demonstrate excellent long-term cyclability with a minimal capacity fading rate of 0.089 % per cycle over 500 cycles, and a commendable rate capability with a highly reversible capacity of 922.1 mAh g −1 at 3 C. This work establishes a unique and insightful paradigm for designing advanced electrode materials towards energy-dense next-generation LIBs.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2020
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IF 7.632
Wei Li,Yanli Niu,Xiuju Wu,Fawang Wu,Tianhao Li,Weihua Hu
Metal selenides attract great research interest as oxygen evolution reaction (OER) electrocatalysts. Herein, we report heterostructured bimetallic cobalt–iron diselenide nanoparticles with abundant vacancies and strong electronic coupling supported on carbon nanorod (CoSe2/FeSe2@C) as a highly efficient OER electrocatalyst. It is synthesized with a facile templating-engaged synthetic strategy and exhibits outstanding OER catalytic performance including high activity and good durability in alkaline medium. It affords a current density of 10 mA cm–2 at a low overpotential of 291 mV with small Tafel slope of 62 mV dec–1, which significantly outperforms the benchmarking RuO2 catalyst. The outstanding OER performance is found to be arising from its integrated advantages of the modulated electronic structure, abundant active sites, high electric conductivity, and large surface area endowed by its unique heterostructure and composition. This work exemplifies a feasible route to designing heterogeneous nanomaterials and enriches the OER electrocatalytic application of transition metal selenide-based hybrid materials.
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
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2020
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IF 4.939
Rui Jiang,Weizhe Wang,Xue Zheng,Qian Li,Zhimou Xu,Jing Peng
The development of effective and inexpensive catalysts for hydrogen release from hydrogen-storage compounds such as ammonia-borane (AB) is crucial in academic and industrial fields for the reduction of greenhouse gas emissions . Herein, we report a facile method to fabricate well-dispersed CoP nanoparticles (NPs) with an average particle size of 4.3 nm. The CoP NPs were encapsulated in carbonaceous nanorods (CoP@CNR) using metal-organic frameworks (MOFs) as a sacrificial precursor. The CoP@CNR catalysts were characterized, and their catalytic performance for the dehydrogenization of AB at 25 °C in an alkaline solution was determined. CoP@CNR (400) with a hierarchically meso-microporous structure (micropore area = 73.6 m 2 g -1 and micropore volume = 0.19 cm 3 g -1 ) and a specific surface area of 88.4 m 2 g -1 was synthesized during the phosphorization process. The hierarchically porous structure was instrumental in immobilizing metal NPs and accelerating mass diffusion. Moreover, the incorporation of P into Co NPs modified the electronic structure of the latter and accelerated the dehydrogenization of AB. This resulted in a hydrogen release rate of 10,014 mL/(min·g), which was 13 times higher than that of the pure Co nanocatalyst. In addition, we reported the kinetic studies for AB hydrolysis catalyzed by CoP@CNR (400) in terms of the temperature effect, isotope effect , catalyst concentration, AB concentration, and NaOH concentration.
研究领域:
材料科学
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催化化学
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能源存储与转换
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产品关联
DOI
高影响因子
IONICS
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2024
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IF 2.4
Yuan Huaming,Zhang Yunqiang,Lu Yiming,Li Xin,Liu Ming,Cui Jiaxi,Li Mei,Jing Laiying
Lithium-sulfur batteries (LSBs) have a high theoretical specific capacity (1675 mAh/g) and are expected to replace lithium-ion batteries as a new generation of high-density energy storage devices. However, the existence of problems such as the “shuttle effect” causes an irreversible loss of LSB capacity. In view of this, carbon nanorods embedded with cobalt nanoparticles (Co-CNRs-CTAB) were successfully prepared through the high-temperature pyrolysis of prism-shaped polypyrrole loaded with zeolitic imidazolate framework-67 under the assistance of cetyltrimethylammonium bromide (CTAB), applied as commercial polypropylene (PP) separator modifiers to promote the rapid capture and redox conversion of soluble polysulfides for upgrading LSBs. The results show that the LSBs assembled with modified Co-CNRs-CTAB/PP separator have amazing electrochemical performance, involving a high initial mass specific capacity of 1091.8 mAh/g (1 C) and excellent cycling stability (594.7 mAh/g after 300 cycles at 3 C). Even at − 10 °C, the capacity attenuation of the LSBs per cycle is only 0.05% after 150 cycles. Therefore, this work provides an operationally simple and low-cost solution for improving the cycle life of 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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产品关联
DOI
高影响因子
RSC Advances
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2012
·Vol. 2
·期 21
·8157-8163
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IF 0
Dingsheng Yuan,Xiaoli Yuan,Shuangli Zhou,Wujun Zou,Tianxiang Zhou
Nitrogen-doped carbon nanorods (N-CNRs) are prepared by a direct carbonization method using polyaniline nanorods as the carbon precursor. The electrochemical behavior of the N-CNRs-Nafion modified electrode is evaluated in connection with dopamine and ascorbic acid by cyclic voltammetry and differential pulse voltammetry. Experimental results indicate that the N-CNRs modified electrode has improved current response and fast electron transfer kinetics. The linear response for the selective determination of dopamine in the presence of ascorbic acid is obtained in the range of 0.008 μM to 15.0 μM with a detection limit of 8.9 × 10−9 M (S/N = 3) by differential pulse voltammetry under optimum conditions. The N-CNRs-Nafion modified electrode exhibits a wide linear range, very low detection limit and anti-interference ability. Meanwhile, a kinetic reaction process and a reaction mechanism for the N-CNRs are also proposed.
研究领域:
分析化学
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材料科学
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生物医学
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产品关联
DOI
MICROCHEMICAL JOURNAL
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2021
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IF 4.821
Bo-Tao Liu,Xin-Qin Cai,Yu-Hui Luo,Kai Zhu,Qing-Yu Zhang,Tong-Tong Hu,Ting-Ting Sang,Cheng-Yan Zhang,Dong-En Zhang
Nickel nanoparticles loaded with carbon nanorods (Ni@CNRs) were facile synthesized by pyrolysis of a Ni-based coordination compound. The constructed Ni@CNRs hybrid showed a high special surface area with Ni nanoparticles uniformly distributing on its surface. It is expected that the high special surface area of Ni@CNRs may increase the exposure of active sites, whereas the uniformly distribution of Ni nanoparticles may shorten the gap between Ni nanoparticles and CNRs, and then speeds up the electron migration. Then, Ni@CNRs were used as effective electrochemical sensor for simultaneous dopamine (DA) and uric acid (UA) detection. It is found that Ni@CNRs modified electrode exhibited two linear ranges of 0.5–30 μM and 35–100 μM for both single detection of DA and UA. The detection limits (S/N = 3) were calculated to be 0.056 μM for DA and 0.166 μM for UA, respectively. In addition, due to its high sensitivity and stability, Ni@CNRs was successfully applied for DA and UA analysis in human urine. These results show that Ni@CNRs is an effective electrode material for DA and UA detection. This work provides an effective strategy for exploring new electrical sensing materials.
研究领域:
材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
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2023
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IF 5.3
Caicheng Song,Hua Lin,Tianwei Wang,Bing Li,Rongwen Lu,Shufen Zhang
Functionalized carbon nanorods have attracted extensive attention in materials science and technology, due to their unique structure and excellent properties. Nevertheless, it remains a huge challenge to develop an approach that combines simple, cost-effective implementation paths with outstanding target products. Herein, we propose a soft-template strategy to achieve directional preparation of one-dimensional (1D) “urechis unicinctus”-like nitrogen-doped porous carbon nanorods with abundant nitrogen content (8.35 wt %), high surface area (2560 m2/g), and hierarchical pore structure. The anionic surfactant sodium bis(2-ethylhexyl) sulfosuccinate (AOT) and melamine are the template agent and main carbon–nitrogen precursor, respectively. By controlling the amount of ammonia (NH4OH), the behavior of AOT molecules in the aqueous phase can be accurately interfered to construct rodlike micellar templates, thereby guiding the preparation of target structural products. The rationality and stability of the original route were verified by the rigorous control experiments and relevant characterization. Moreover, the prepared materials show excellent performance in the evaluation of supercapacitors with an outstanding specific capacitance of 398 F/g at a current density of 0.5 A/g and 73.4% of original specific capacitance retention at a current density of 20 A/g.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2024
·Vol. 17
·期 1
·1-16
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IF 31.6
Bai Jie,Jia Jian Hui,Wang Yu,Yang Chun Cheng,Jiang Qing
Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at − 20 °C or lower. However, the key capability of ultrafast charging at ultralow temperature for SIBs is rarely reported. Herein, a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue, which is synthesized via a high temperature shock method. Such a hybrid shows an unprecedented rate performance (237.9 mAh g−1 at 2 A g−1) at − 60 °C, outperforming all reported SIB anode materials. Coupled with a Na3V2(PO4)3 cathode, the energy density of the full cell can reach to 181.9 Wh kg−1 at − 40 °C. Based on this work, a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
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2017
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IF 2.446
Yan Sun,Xiaohan Liu,Fangzhi Huang,Shikuo Li,Yuhua Shen,Anjian Xie
A low-cost and green method to get electrode materials with wonderful electrochemical performance is decisive for the development of lithium ion batteries (LIBs). Here it’s the first time to synthesize rod-like porous Fe 2 O 3 coated with carbon (Fe 2 O 3 /C) by using biomolecules in spinach juice as soft templates and carbon resource. The different initial concentrations of Fe 3+ can affect the morphologies and electrochemical properties of samples. When the initial concentration of Fe 3+ is 0.4 M, the sample (Fe 2 O 3 /C-2) exhibits favorable performance of lithium storage owing to the existence of carbon with excellent electroconductivity and the porous rode-like structure which can relieve the large volume change and provide pathway for Li + transport during cycles. The initial capacity of sample is 1405 mA h g −1 while the capacity maintained 581 mA h g −1 after 100 cycles at a current density of 0.2 A g −1 . The excellent electrochemical performances of Fe 2 O 3 /C-2 make it a promising anode material for LIBs.
研究领域:
材料科学
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能源科学
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绿色化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Lei Cao,Maliang Zhang,Kunmei Su,Feng Gu,Zhenhuan Li
Decorating porous carbon nanomaterials with rich homodispersed metal cluster and heteroatoms can effectively shorten the diffusion pathway of oxygen and expose more active sites, thereby promoting oxygen reduction reaction (ORR). Herein, hierarchical porous carbon nanorods with homodispersed Fe–N x –C active sites are obtained by calcination , etching and ammonia activation of Fe-nitrogenous acid (NTA) coordination polymer nanowires. The obtained Fe-PCNRs-700 as ORR catalysts show the excellent activity with half wave potential (E 1/2 ) of 0.71 V vs. reversible hydrogen electrode (RHE) in 0.5 M H 2 SO 4 and 0.87 V vs. RHE in 0.1 M KOH electrolyte, which owe to its huge specific surface area (1652 m 2 g −1 ), hierarchical pore structure , homodispersed Fe–N x –C active sites and structural defects. Furthermore, using Fe-PCNRs-700 as a cathode catalyst in both liquid and flexible solid Zn-air batteries, and the assembled liquid batteries display the high power density of 161 mW cm −2 and robust charge/discharge stability of 116 h.
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）