JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 24
·1707
·
IF 2.8
Van Ngo Hoanh,Nguyen Hung Tran,Le Hieu Trung,Le Thanh Huu,Vu Thien Tri,Pham Kien Trung,Phung Thinh Xuan
A study area in supercapacitor research is the design and manufacturing of composite electrode materials that combine the advantages of various materials. The rGO/CoFe 2 O 4 composite material is produced by growing cobalt ferrite particles on the surface of rGO using a simple and highly efficient thermal reduction technique. The results show that the electrochemical properties of rGO are significantly improved by the incorporation of cobalt ferrite. rGO sheets are used as supporting frameworks for the CoFe 2 O 4 nanoparticles, while the CoFe 2 O 4 particles provide more active sites for redox reactions. The prepared rGO/CoFe 2 O 4 show excellent electrochemical properties, with a high specific capacitance of 283 F/g at a current density of 0.1 A/g and a specific capacitance retention of 90.5% after 1000 cycles. The attractive performances exhibited by rGO/CoFe 2 O 4 composites make them potential electrode materials for supercapacitors in future.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 12
·17056-17067
·
IF 4.672
Tao Lyu,Shiying Lin,Lanlan Mo,Feijun Wang,Ziqiang Shao
Summary Natural polyelectrolyte complex has designable structure, unique advantages of composite and strong intermolecular or intramolecular force without chemical cross-linking agents, showing the advantages of good biodegradability and low toxicity. This work reports an application research of natural polyelectrolyte in energy storage device. A multi-doped hierarchically porous carbon is fabricated from polyelectrolyte of sodium lignosulfonate and chitosan and used as electrode material of supercapacitor. The material characterization reveals its large specific surface area of 1768 m 2 g −1 , pore volume of 0.94 cm 3 g −1 with optimum 3D porous structure, and high heteroatom (oxygen, nitrogen, and sulfur) concentration. Benefit from these, the electrodes it made exhibit 354 F g −1 specific capacitance at 1 A g −1 current density, outstanding rate retention of 82.9% at a testing environment of 20 A g −1 , and 97.8% capacitance retention in 3 M KOH electrolyte after 10 000 cycles. Using this material, all-solid symmetric supercapacitor devices show 30.11 Wh kg −1 energy density at 520.88 W kg −1 power density and retains 20.90 Wh kg −1 at 1.03 kW kg −1 . These remarkable electrochemical performances prove the promising porous carbon in this work as electrode material with excellent performance for supercapacitors.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
功能材料
·
碳材料
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Shaopei Jia,Yanhui Wang,Pengfei Tian,Shuyu Zhou,Haixia Cai,Hongwei Gao,Jianbing Zang
Nitrogen-doped mesoporous carbon (NMC) was synthesized via pyrolysis of cobalt-containing casein obtained by extraction from pure milk with the auxiliary of cobalt ions. The cobalt element in casein promoted specific surface area and N element doping amount of casein-derived porous carbon. The N-doped porous carbon obtained by carbonization at 800 °C (NPC-800) possessed a specific surface area of ∼886.7 m 2 g −1 , and the mesoporous size was centered at 2.7 and 7 nm. X-ray photoelectron spectroscopy analysis showed that the nitrogen content of NPC-800 was 3.29 at%. The NPC-800 was explored as a symmetric supercapacitor, which exhibited specific capacity of 380 F g −1 at a current density of 0.5 A g −1 , 218 F g −1 at a current density of 20 A g −1 , and high capacitance retention of 91.3% after charging/discharging 5,000 cycles.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
功能材料
·
碳材料
✓ 已验证
DOI
高影响因子
CARBON
·
2022
·
IF 11.307
Xu Zhao,Jizhen Zhang,Ke Lv,Na Kong,Yanqiu Shao,Jinlong Tao
Mechanically strong and electrically conducting fibers, particularly those with high specific capacitances, are promising fiber-shaped electrodes for fiber- and textile-based energy storage devices like fiber-shaped supercapacitors (FSCs). However, a high loading of fillers or bridging agents is commonly required to fabricate fiber electrodes with good mechanical strength , which compromises electrical conductivity and energy storage performance. Herein, an easily scalable wet-spinning strategy is reported to fabricate multifunctional Ti 3 C 2 T x MXene/carbon nanotubes (MXene/CNT) hybrid fibers from a harmonious mixture of MXene and CNT in water and using acetic acid as a coagulation bath . The hybrid fiber achieved high strength (61 ± 7 MPa), good conductivity (1142.08 ± 40.04 S cm −1 ) and excellent energy storage performance (∼295 F g −1 at 5 mV s −1 ) at a very low CNT content of ∼1 wt%. When CNT loading increased to ∼9 wt%, the maximum strain at broken reached 161 ± 19 MPa and conductivity further increased to 1715 ± 22 S cm −1 . The excellent mechanical performance allows hybrid fibers to be knitted into textiles for energy storage textiles. The assembled FSCs exhibit energy and power densities of ∼6.08 mW h cm −3 and ∼6440 mW cm −3 , respectively. The excellent performance of MXene/CNT fiber and good feasibility for scalable production will open up new opportunities for the development of wearable and textile-based devices in the near future.
研究领域:
材料科学
·
纳米科技
·
能源存储
·
纺织电子学
·
高分子物理
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Hui-Xian Yang,Dong-Lin Zhao,Wen-Jie Meng,Ya-Qian Wu,Yu Yang,Hao Pu,Rui-Ze Gao
Electrochemical energy storage (EES) devices that combine high-performance are essential to resolve the extreme shortage of non-renewable energy sources and environmental issues. Nickel oxide (NiO) is considered to be a promising EES cathode material because of its ultra-high theoretical specific capacitance, whereas the practical applications are greatly limited with poor rate and cycle performance. Herein, we report the yolk-shelled NiO/Ni composites (YS NiO/Ni) that exhibit good charge storage capability in the aqueous electrolyte with high specific capacitance (2207.3 F g −1 at 1 A g −1 ), exceptional rate capability, and ultra-high cycling stability (95.8% retention after 10,000 cycles). The superior property can be ascribed to the special yolk-shelled structure that exposes more redox reaction active sites, and the associate Ni nanoparticles with flower-like NiO which can improve electron transfer as current collectors.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
功能材料
·
电化学能量存储
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Peng Zhang,Zhimeng Liu,Yuping Liu,Hongbo Fan,Yuanqi Jiao,Baiman Chen
In this work, we demonstrate a facile approach to synthesize high-performance and stable TiO 2 @PANI core-shell nanowires (NWs) as flexible electrodes for solid-state supercapacitors (SCs). The TiO 2 @PANI core-shell NWs are grown directly on highly conductive carbon cloth, which not only give efficient charge transport and accessible diffusion of the electrolyte, but also provide large surface area and active sites for redox reaction as well as good strain accommodation. Such these features enable them to deliver a large areal capacitance of 520.3 mF/cm 2 at 0.5 mA/cm 2 with outstanding rate capability. Furthermore, a flexible and stable solid-state SC device based on these TiO 2 @PANI core-shell NWs is also demonstrated. The as-fabricated solid-state SC device yields a remarkable volumetric capacitance of 898.4 mF/cm 3 , excellent flexibility and significant cycling stability with more than 97.2% retention of its capacitance after 10000 cycles. We believe that these findings may open up new opportunities to prepare high-performance PANI-based electrodes for flexible solid-state SCs.
研究领域:
材料科学
·
纳米科技
·
电化学
·
能源存储
·
功能材料
·
柔性电子学
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2019
·Vol. 3
·期 9
·2237-2245
·
IF 4.912
Yulin Chen,Yu Li,Fengnan Yao,Cong Peng,Chen Cao,Yiyu Feng,Wei Feng
Two-dimensional (2D) graphene-based materials are widely applied as electrodes for supercapacitors due to their vast surface area and excellent charge mobility. However, the pursuit of the theoretical capacitance of graphene has lasted besides the improvements of charge/discharge rate and cycling life. In this work, a nitrogen and fluorine co-doped holey graphene hydrogel (NF-HGH) was synthesized by using consecutive solvothermal treatments for creating vacancies on the graphene basal plane and introducing heteroatoms into the graphene framework. The NF-HGH as an electrode for supercapacitors exhibited a remarkable electrochemical performance of 345.4 F g−1 at 1 A g−1 in 6 M KOH electrolyte. In addition, the specific capacitance of the assembled all-solid-state flexible symmetric supercapacitor (SSC) was 67.3 F g−1 at 1 A g−1, with an outstanding long-term cycling stability over 10 000 cycles. The delivered maximum energy and power densities were 7.99 W h kg−1 and 10.08 kW kg−1, respectively. The abundant pyrrolic-N doped at the edge of etched vacancies and the formed semi-ionic C–F bonds around pyrrolic-N were critical for electrochemical developments, which provided a sensational method to construct carbonaceous frameworks for energy storage systems.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 28
·期 17
·12747-12754
·
IF 2.019
Huang Feng,Yan Aihua,Sui Yanwei,Wei Fuxiang,Qi Jiqiu,Meng Qingkun,He Yezeng
Ni 3 S 4 @MoS 2 nanosheets grown on the carbon fiber paper (Ni 3 S 4 @MoS 2 /CFP) were successfully prepared via a facile one-step hydrothermal technique. Serving as a supercapacitor electrode, the obtaining Ni 3 S 4 @MoS 2 /CFP exhibits a remarkable specific capacitance of 1296 F/g, high rate capability of 57.8%, and excellent cycling stability of 96.2% retention after 5000 cycles. The superior electrochemical properties of Ni 3 S 4 @MoS 2 /CFP nanocomposite is attributed to the synergistic effects of the layeredNi 3 S 4 , MoS 2 and the conductive CFP.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
功能材料
·
复合材料
✓ 已验证
DOI
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 23
·10393-10401
·
IF 7.79
Xiaodong Hao,Shuai Zhang,Yang Xu,Liangyu Tang,Kazutoshi Inoue,Mitsuhiro Saito,Shufang Ma,Chunlin Chen,Bingshe Xu,Tadafumi Adschiri,Yuichi Ikuhara
Surfactant plays a remarkable role in determining the growth process (facet exposition) of colloidal nanocrystals (NCs) and the formation of self-assembled NC superstructures, the underlying mechanism of which, however, still requires elucidation. In this work, the mechanism of surfactant-mediated morphology evolution and self-assembly of CeO2 nanocrystals is elucidated by exploring the effect that surfactant modification has on the shape, size, exposed facets, and arrangement of the CeO2 NCs. It is directly proved that surfactant molecules determine the morphologies of the CeO2 NCs by preferentially bonding onto Ce-terminated {100} facets, changing from large truncated octahedra (mostly {111} and {100} exposed), to cubes (mostly {100} exposed) and small cuboctahedra (mostly {100} and {111} exposed) by increasing the amount of surfactant. The exposure degree of the {100} facets largely affects the concentration of Ce3+ in the CeO2 NCs, thus the cubic CeO2 NCs exhibit superior oxygen storage capacity and excellent supercapacitor performance due to a high fraction of exposed active {100} facets with great superstructure stability.
研究领域:
材料化学
·
纳米科学
·
催化化学
·
电化学
·
无机功能材料
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 47
·14943-14950
·
IF 0
Hai Fu,Zhong-jie Du,Wei Zou,Hang-quan Li,Chen Zhang
A carbon nanotube reinforced polypyrrole nanowire network was constructed by in situ polymerization of pyrrole in the presence of carbon nanotubes using cetyltrimethylammonium bromide micelles as a soft template. Carbon nanotubes as a reinforcer were embedded into a network of polypyrrole nanowires, thus retaining in the latter a complete network. The resulting network possessed a specific surface area of 112.1 m2 g−1 and a rough porous structure. The embedding of carbon nanotubes decreased the charge transfer resistance in the polypyrrole nanowires and allowed easy access and rapid diffusion of ions/electrons. When applied as a capacitive electrode, a specific capacitance of 183.2 F g−1 was observed at a current density of 8 A g−1. The specific capacitance retention was 85% after 1000 cycles at 1 A g−1. An asymmetric supercapacitor was fabricated using the network as a positive electrode and active carbon as a negative electrode, and when operated at a maximum voltage of 1.5 V, had a high energy density (15.1 W h kg−1 at 3000 W kg−1). A long-term cycling test of the asymmetric supercapacitor at a current density of 1 A g−1 displayed a capacitance retention of 72% even after 3000 cycles of charge and discharge.
研究领域:
材料科学
·
纳米科技
·
电化学
·
能源存储
·
高分子科学
✓ 已验证
DOI
JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Qianlong Zhou,Chunyang Jia,Xingke Ye,Zhonghua Tang,Zhongquan Wan
At present, the topic of building high-performance, miniaturized and mechanically flexible energy storage modules which can be directly integrated into textile based wearable electronics is a hotspot in the wearable technology field. In this paper, we reported a highly flexible fiber-shaped electrode fabricated through a one-step convenient hydrothermal process. The prepared graphene hydrogels/multi-walled carbon nanotubes-cotton thread derived from natural cotton thread is electrochemically active and mechanically strong. Fiber-shaped supercapacitor based on the prepared fiber electrodes and polyvinyl alcohol-H 3 PO 4 gel electrolyte exhibits good capacitive performance (97.73 μF cm −1 at scan rate of 2 mV s −1 ), long cycle life (95.51% capacitance retention after 8000 charge-discharge cycles) and considerable stability (90.75% capacitance retention after 500 continuous bending cycles). Due to its good mechanical and electrochemical properties , the graphene hydrogels/multi-walled carbon nanotubes-cotton thread based all-solid fiber-shaped supercapacitor can be directly knitted into fabrics and maintain its original capacitive performance. Such a low-cost textile thread based versatile energy storage device may hold great potential for future wearable electronics applications.
研究领域:
材料科学
·
纳米技术
·
柔性电子学
·
能源存储
·
纺织工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Xijun Wei,Yanhong Li,Huarong Peng,Ming Zhou,Yingqing Ou,Yibin Yang,Yunhuai Zhang,Peng Xiao
In this work, hollow CoS nanobox (noted as HCSN) have been successfully synthesized via annealing and hydrothermal process from zeolitic imidazolate framework (ZIF-67) template. When tested as positive electrode materials in alkaline aqueous electrolyte, it shows high specific capacitance of 720 F g −1 at a current density of 1 A g −1 , good rate capability (82.1%) and good cycling stability with 86.4% capacitance retention over 10,000 cycles at 10 A g −1 . To further demonstrate the advantages of our ZIF-67 derived materials, asymmetric energy storage device was assembled (HCSN//NC), where the as-prepared HCSN was employed as the anode and ZIF-67-derived nanoporous carbon (noted as NC) as the cathode. This device achieves high energy density (80 Wh kg −1 at a specific power density of 882 W kg −1 ), good rate capability (53.3 Wh kg −1 even at a specific power density of 7.9 kW kg −1 ) and long-term stability up to 10,000 cycles. More importantly, it could simultaneously light up 12 LEDs in parallel, demonstrating its potential in practical applications.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
·
应用物理
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）