JOURNAL OF NANOPARTICLE RESEARCH
·
2016
·Vol. 18
·期 7
·1-8
·
IF 2.101
Zhao Chenhao,Fang Shuzhen,Hu Zhibiao,Qiu Sheng’en,Liu Kaiyu
The carbon substrate with unique 3D macroporous structure has been prepared through the immediate carbonization of ethylenediaminetetraacetic acid (EDTA) and KOH mixture. The porous carbon composed of micro- and small mesoporous (2–5 nm) structure has a BET specific surface area of 1824.8 m 2 g −1 . The amorphous and nanosized Se is uniformly encapsulated into the porous structure of porous carbon using melting diffusion route, and the weight content of Se in target Se/C composite can be as high as ~50 %. As an Li–Se battery cathode, the Se/C composite delivers a reversible (2nd) discharge capacity of 597.4 mAh g −1 at 0.24C and retains a discharge capacity of 538.4 mAh g −1 at 0.24C after 100 cycles. Furthermore, the composite also has a stable capacity of 291.0 mAh g −1 at a high current of 4.8C. The high specific area and good porous size of EDTA-derived carbon substrate may a be responsibility for the excellent electrochemical performances of Se/C composite.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Shiyuan Xu,Youpeng Wang,Qiming Li,Jiawen Yan,Hao Huang,Caicai Zhang,Xiaoyu Zhang,Fuyi Jiang,Yanli Zhou
Herein, the high-capacity and amorphous MoS 3 has been employed to decorate the hollow Co 9 S 8 nano-spheres to fabricate the Co 9 S 8 /MoS 3 composites by a three-step synthesis. The chain-like and amorphous MoS 3 can provide a high capacity of 894 mAh g −1 and generate abundant active sites to boost the sodium storage properties of Co 9 S 8 based electrode. The heterogeneous interface between Co 9 S 8 and MoS 3 is conducive to the promotion of charge transfer and Na + diffusion kinetics. Thus, the Co 9 S 8 /MoS 3 as the novel anode materials exerts more outstanding sodium storage properties than pure Co 9 S 8 . At a given current density of 0.5 A g −1 , the Co 9 S 8 /MoS 3 delivers a desired reversible capacity of 621 mAh g −1 for 90 cycles. Even at 2 A g −1 , the Co 9 S 8 /MoS 3 exhibits a stable cyclic performance, the charge specific capacity is about 518 mAh g −1 for 500 cycles. At a high rate of 5 A g −1 , a high capacity of 486 mAh g −1 can be achieved, which is obviously higher than that of pure Co 9 S 8 . The remarkable sodium storage properties of Co 9 S 8 /MoS 3 are mainly resulted from the cooperate effects of amorphous MoS 3 and hollow Co 9 S 8 nano-spheres, which demonstrate the promising application of Co 9 S 8 /MoS 3 in future sodium storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Yanan Deng,Yuanyuan Shen,Yao Du,Takashi Goto,Jianfeng Zhang
The development of high-performance electrode materials with a far-from-enough energy density has still been crucial for the real applications of supercapacitor technology. In this paper, the N-doped and derivatized-carbon-intercalated Ti 3 C 2 T x , abbreviated as N–Ti 3 C 2 T x /C, was firstly fabricated using ZIF-67 as an intermediate precursor. Then N–Ti 3 C 2 T x /C/CuS was prepared by further intercalation with CuS nanoparticles through a room-temperature-in-situ-reaction route. The doped pyridine N and pyrrolic N, together with derivatized carbon, optimized the surface charge distribution of Ti 3 C 2 T x with increased active sites. In addition, CuS nanoparticles were observed distributed on the surface and between layers of single/multi-layered two-dimensional N–Ti 3 C 2 T x /C nanosheets, forming a heterogeneous three-dimensional structure. Therefore, the specific capacitance of the N–Ti 3 C 2 T x /C/CuS composite at a current density of 1 A g −1 reached 1205.8 F g −1 , about 5 times that of N–Ti 3 C 2 T x /C and 2 times of CuS, also much higher than other composite reported in the literature. The energy density and power density of N–Ti 3 C 2 T x /C/CuS, as a symmetric supercapacitor electrode, are 77.22 Wh·kg −1 and 649.54 W kg −1 , respectively. More importantly, N–Ti 3 C 2 T x /C/CuS has an excellent stability after 3000 cycles, surpassing that of similar electrode materials reported in literature. This study opens a new direction for enhancing the energy density of supercapacitors with modified electrode materials through a MOF-mediated strategy.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Minxian Xu,Li Chen,Weiliang Zhou,Xi Liu,Dongzhen Lu,Minglu Zhang,Zheru Shi
The demand for energy storage equipment in the information age era is becoming increasingly scarce, but manganese-based metal oxides with large potential windows and multivalent states were developed and used as high-performance electrode materials for energy storage. MnO 2 array grow on the carbon sphere as the precursor and then obtain multi-types and hierarchical of manganese metal oxides through gradient carbonization. The surface crystal phase changes with temperature, and the electrochemical performance shows obvious imparity. In addition, the carbon spheres gradually disappear with increasing temperature forming a hollow shell structure, which is conducive to sufficient contact between electrolyte and electrode material. It found that the annealing temperature can change the surface oxide morphology of MnO 2 /C, and it can know that the temperature promotes the conversion of MnO 2 to Mn 2 O 3 and Mn 3 O 4 . Based on the oxides of different crystal phases, the electrochemical properties are more distinctive due to their different structures. The rod-like nanoarray Mn 2 O 3 /C composites derived from annealing the precursors at 600 °C show high specific capacity and rate performance under a very large potential window of 0~1.2 V (show a remarkable specific capacitance of 277.0 F·g −1 at a current density of 1.0 A·g −1 ). Considering practical application, the as-assembles Mn 2 O 3 /C//Na 2 SO 4 //Mn 2 O 3 /C symmetrical supercapacitors device exhibits a maximum energy density of 80.35 Wh·kg −1 at a power density of 500 W·kg −1 , which can be applied promising storage materials for information age.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Xiaolin Sun,Kai Zhao,Hucheng Fu,Hanwen Guo,Jun Shen,Fuhao Jin,Lei Wang,Zihao Wang,Liang Cui,Fengyu Quan,Jingquan Liu
For high-performance electrochemical energy storage and conversion applications, controllable nanoarchitecture arrays of the transition metal selenide on conductive substrates are attractive electrode materials. In this work, a heterostructure comprising of MnSe 2 nanorods over NiCo 2 Se 4 nanosheets with a large specific surface area is rationally generated on nickel foam (NF) substrate (MnSe 2 @NiCo 2 Se 4 ) using a hydrothermal process. The formation mechanism of the MnSe 2 @NiCo 2 Se 4 heterostructure was also examined by adjusting the selenium feeding during the selenization process. The MnSe 2 @NiCo 2 Se 4 -2 electrode exhibits remarkable capacitance (1078C g −1 at 1 A g −1 ), and superior cycle stability (90.7 % after 8000 cycles) as a result of the cooperative effect of MnSe 2 and NiCo 2 Se 4 . Furthermore, an asymmetric supercapacitor (ASC) was developed employing the improved MnSe 2 @NiCo 2 Se 4 -2 and activated carbon materials (AC) as the positive electrode and negative electrode (MnSe 2 @NiCo 2 Se 4 -2//AC), respectively, which has a high energy density of 63.2 Wh kg −1 at a power density of 396 W kg −1 . The impressive performance indicates that the MnSe 2 @NiCo 2 Se 4 electrode has a bright potential in supercapacitors .
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
Russian Journal of Physical Chemistry A
·
2025
·Vol. 99
·期 3
·620-628
·
IF 0.8
Lei Bai,Cheng Fangming,Dong Yuting
Antimony sulfide (Sb2S3) possesses a high theoretical capacity and excellent reversibility, making it a promising anode material for lithium-ion batteries (LIBs). However, its poor intrinsic conductivity and significant volume changes during charge/discharge cycles severely limit its cycling stability and rate performance. In this study, a novel composite material was synthesized by electrostatically assembling Sb2S3 nanowires (Sb2S3 nw) onto MXene nanosheets as a potential anode material (SbSMX). The introduction of highly conductive MXene substrates enhances electron transfer between the distinct interfaces of Sb2S3 and MXene. Additionally, the constructed 1D–2D structure promotes ion transport within the electrode, while the mechanical flexibility of MXene effectively mitigates the severe volume expansion of Sb2S3. As a result, the SbSMX composite exhibits a high capacity of 813 mA h g–1 at a current of 50 mA g–1, stable cycling performance with a capacity of 735 mA h g–1 after 100 cycles at 100 mA g–1 (88% retention), and excellent rate capability, achieving 466 mA h g–1 at a current of 3 A g–1.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2018
·Vol. 24
·期 49
·12932-12937
·
IF 5.16
Guozhen Zhu,Qing Li,Renchao Che
Graphical On the ball : The high charge/discharge voltage (1.65 V), long life span, and excellent reversibility of TiNb 2 O 7 have led to its use as an anode for lithium ion batteries. In order to overcome its inherent poor electronic conductivity, it is herein formed as hollow spheres, and coated with carbon, resulting in a much-improved anode performance. TiNb 2 O 7 , with high charge/discharge voltage (1.65 V), long life span, and excellent reversibility has become a new anode material for lithium ion batteries in recent years. However, the inherent poor electronic conductivity strictly limits its practical applications. Herein, we report for the first time hollow TiNb 2 O 7 @C spheres, with carbon spheres as sacrificial template. The special hollow structure can effectively relieve the volume expansion during the repeated process of charging/discharging. The conductivity of hollow TiNb 2 O 7 spheres can be greatly improved by the carbon layers uniformly coated outside the surface of TiNb 2 O 7 spheres. Besides, the particle aggregation can be conspicuously suppressed by the uniformly coated carbon layers. As a result, hollow TiNb 2 O 7 @C spheres show a prominent charge/discharge capacity of 282.6/283.8 mAh g −1 after 100 cycles at 0.25 C (1 C=388 mA g −1 ), revealing the excellent cycle performance and high reversible capacity. Meanwhile, the charge/discharge capacity of 157.5 and 157.9 mAh g −1 can be maintained at 10 C after 10 cycles. The facial synthetic method can be extended to prepare various materials with volume expansion during repeated charging/discharging process.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Fayun Wei,Fanghua Liang,Yanrui Zhao,Zhuyu Ji,Ruiqing Li,Hui Liu,youchao Kong,Honggang He,Weichun Huang,Chunyan Cao,Wei Zhang,Bin Fei,Mingzheng Ge,Tingting Yan
High-capacity conversion-type anodes with high volume expansion and low conductivity face limitations in meeting the high energy density demands of lithium-ion batteries. Herein, MOF-derived CoSe2/ZnSe bimetallic selenide nanoparticles are confined in layered Ti3C2Tx MXene (CoSe2/ZnSe@MX) as electrodes for high-performance lithium-ion batteries by in-situ self-assembly and selenization strategy. The interconnected conductive MXene networks not only can provide highways for charge transfer, but also can effectively accommodate the large volume expansion, improving the structural stability. Meanwhile, the bimetallic CoSe2/ZnSe nanoparticles with heterostructures and Se vacancies offer abundant redox reaction sites, promote Li-ions diffusion, and enhance Li-ions adsorption. Thus, the CoSe2/ZnSe@MX electrodes exhibit a remarkable capacity of 830.8 mAh g-1 at 0.1 A g-1, high-rate capability of 290.8 mAh g-1 at 5 A g-1, and superior cycling stability with 63.1% capacity retention after 2000 cycles. Furthermore, the full cell was demonstrated practical applicability with a high capacity of 156 mAh g-1 at 0.1 C. This facile technique is promising to construct high-performance energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Small Methods
·
2023
·
IF 12.4
Chunlai Song,Qiang Wang,Ruihang Wen,Qiben Tang,Zhiqiang Luo,Zhihao Yuan
Benzoquinone (BQ) is considered to be a desirable cathode material for aqueous zinc-based batteries. The major limitations of BQ electrode are the severe sublimation and poor electrical conductivity, which results in serious mass loss during electrode preparation and inferior rate performance. In this study, iodine (I 2 ) species are utilized as an efficient catalyst for the highly reversible conversion of BQ/BQ 2− couple in the Zn-BQ battery system, wherein N-doped porous carbon is employed as a host material for anchoring the BQ molecule. In the combination electrode (denoted as BQ-I@NPC) with 1wt% I 2 additive where I 2 can serve as a carrier to accelerates the Zn 2+ transmission, and reduce the voltage hysteresis of the electrode. As a result, the BQ-I@NPC cathode delivers a high specific capacity of ≈482 mAh g −1 at 0.25 A g −1 , realizing a high energy density of 545 Wh kg −1 (based on BQ), which is the highest values among reported organic cathode materials for aqueous Zn-based batteries. Also, a high BQ loading (8 mg cm −2 ) can be attained, and achieving a superior cycling stability with a capacity retention of ≈80% after 20,000 times at 10 C. The work proposes an effective approach toward high performance organic electrode materials.
研究领域:
材料科学
·
化学工程
·
能源技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Lu Luo,Yalan Zhou,Wen Yan,Guanben Du,Mizi Fan,Weigang Zhao
The Ti 3 C 2 T x with excellent conductivity is used in a novel cobalt-based ZIF-67/Ti 3 C 2 T x composites, sulfide derivative (Co 3 S 4 /Ti 3 C 2 T x ) of which is then applied as an active supercapacitor material. The specific capacitance of ZIF-67/Ti 3 C 2 T x is significantly higher than that of unmodified ZIF-67. The sulfide-containing derivatives of these compounds demonstrated pseudocapacitance. The specific capacitance of an electrode containing Co 3 S 4 /Ti 3 C 2 T x as an active material is very high and equal to 602F/g at 1 A/g, which is 2.6 times higher than of a ZIF-67/Ti 3 C 2 T x -containing electrode. The supercapacitor based on Co 3 S 4 /Ti 3 C 2 T x maintained 81.6% of its original capacitance even at 10 A/g current density. Thus, the introduction of Ti 3 C 2 T x into the ZIF-67 improves not only the electrical conductivity of the hybrid material but also its structural stability, which allows to act as support. An asymmetric Co 3 S 4 /Ti 3 C 2 T x //AC supercapacitor (ASC) containing activated carbon (AC) as an anode showed a high energy density equal to 44.9 Wh/kg at 800.3 W/kg power density. This ASC also demonstrated high rate-performance (equal to 79.2%) and excellent cycling stability (with 88.3% capacitance retention and 99.23% Coulombic efficiency after 5000 cycles). The excellent electrochemical performance of our novel composite and conductivity, as well as the stability of its three-dimensional (3D) structure, make it a very promising material for energy storage applications.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2020
·
IF 3.762
Chen Zhang,Aijuan Xie,Wanqi Zhang,Jianing Chang,Chenyang Liu,Linyang Gu,Xiaoxiao Duo,Fei Pan,Shiping Luo
Copper manganese oxide-graphene (CuMn 2 O 4 -RGO) composite was prepared by sol-gel method and then synthesized by physical grinding, which was further applied to electrode materials for supercapacitors. The structure and morphology of the composites were analyzed by means of characterization, such as X-ray diffraction (XRD), Fourier transform infrared (FT-IR), scanning electron microscope (SEM), transmission electron microscopic (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric (TG) analysis, and Raman. The electrochemical tests including cyclic voltammetry (CV), galvanostatic charge-discharge, electrochemical impedance spectroscopy (EIS) and cyclic life were used to investigate electrochemical properties of CuMn 2 O 4 -RGO so as to optimize its composition. Through the comparison of electrochemical properties at different mass ratios, current densities and scan rates, it was found that when the mass ratio was m (CuMn 2 O 4 ): m (RGO) =1:1, the as-prepared CuMn 2 O 4 -RGO exhibited the excellent electrochemical properties. The capacitance reached 342 F g −1 at the current density of 1.0 A g −1 , which was significantly higher than that of pure CuMn 2 O 4 and RGO. The higher capacitance performance can be comparable with the reported literature value. Meanwhile, the energy density of CuMn 2 O 4 -RGO (1:1) is significantly higher than that of CuMn 2 O 4 and RGO. Therefore, CuMn 2 O 4 -RGO (1:1) composite has a good prospect as electrode material for supercapacitor.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 108
·106230-106236
·
IF 3.289
Ying Che,Xiaoyi Zhu,Jianjiang Li,Jin Sun,Yanyan Liu,Chunde Jin,Chaohong Dong
The sluggish kinetics and large volume expansion occurring during cycle process are critical disadvantages for molybdenum dioxide (MoO2) based anode materials for lithium-ion batteries (LIBs). The design and controllable synthesis of MoO2 based materials with unique hierarchical structure are desired. In this work, we present a one step in situ method to synthesize MoO2/carbon aerogel composites with MoO2 nanoparticles embedded in the carbon aerogel matrix using an environmentally friendly alginate as the carbon precursor. The key feature of our strategy involves the use of a carbon aerogel matrix which facilitates the Li ion transport and offers the space for MoO2 volume expansion during the discharge and charge processes. The composite prepared under optimum conditions, namely a stabilization temperature at 375 °C, exhibited a brilliant performance with a specific capacity of 574 mA h g−1 at a current density of 100 mA g−1, good cycle stability (i.e., a reversible capacity of 490 mA h g−1 at a current density of 200 mA g−1 for 120 cycles), excellent rate capability (remains at 331 mA h g−1 even at a current density of 1000 mA g−1). This finding presents an easy, eco-friendly and efficient strategy for the fabrication of potential high-performance LIBs anodes.
研究领域:
材料科学
·
能源存储
·
环境科学
✓ 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）