检索结果-南通市图书馆

Room Temperature Synthesis of Vertically Aligned Amorphous Ultrathin NiCo-LDH Nanosheets Bifunctional Flexible Supercapacitor Electrodes

引用

Energy & Environmental Materials 2024年第2期7卷 277-286页

作者： kwadwo asare owusu Zhaoyang Wang Ali Saad Felix Ofori Boakye Muhammad Asim Mushtaq Muhammad Tahir Ghulam Yasin Dongqing Liu Zhengchun Peng Xingke Cai Institute for Advanced Study Shenzhen UniversityShenzhen 518060China College of Physics and Optoelectronics Shenzhen University3688 Nanhai BoulevardNanshan DistrictShenzhen 518060China School of Chemistry and Materials Science Hubei Engineering UniversityNo.272 Traffic AvenueXiaogan 432000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyNo.122 Luoshi RoadWuhan 430070China Key Laboratory of Green Printing CAS Research Centre for Excellence in Molecular ScienceInstitute of Chemistry Chinese Academy of Sciences(ICCAS)Beijing 100190China College of Mechatronics and Control Engineering Shenzhen University3688 Nanhai BoulevardNanshan DistrictShenzhen 518050China

Developing a simple scalable method to fabricate electrodes with high capacity and wide voltage range is desired for the real use of electrochemical ***,we synthesized amorphous NiCo-LDH nanosheets vertically aligned on activated carbon cloth substrate,which was in situ transformed from Co-metal-organic framework materials nano-columns by a simple ion exchange process at room *** to the amorphous and vertically aligned ultrathin structure of NiCo-LDH,the NiCo-LDH/activated carbon cloth composites present high areal capacities of 3770 and 1480 mF cm^(-2)as cathode and anode at 2 mA cm^(-2),and 79.5%and 80%capacity have been preserved at 50 mA cm^(-2).In the meantime,they all showed excellent cycling performance with negligible change after>10000 *** fabricating them into an asymmetric supercapacitor,the device achieves high energy densities(5.61 mWh cm^(-2)and 0.352 mW cm^(-3)).This work provides an innovative strategy for simplifying the design of supercapacitors as well as providing a new understanding of improving the rate capabilities/cycling stability of NiCo-LDH materials.

关键词： amorphous nanosheets aqueous supercapacitor high volumetric/areal energy density NiCo-LDH room temperature synthesis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Macroscopic synthesis of ultrafine N–doped carbon nanofibers for superior capacitive energy storage

引用

Science Bulletin 2019年第21期64卷 1617-1624页

作者： Qiang Yu Jianshuai Lv Zhenhui Liu Ming Xu Wei Yang kwadwo asare owusu Liqiang Mai Dongyuan Zhao Liang Zhou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China International School of Materials Saence and Engineering Wuhan University of TechnologyWuhan 430070China

Carbon nanofibers(CNFs)with excellent electric conductivity and high surface area have attracted immense research interests in ***,the macroscopic production of CNFs still remains a great ***,ultrafine N–doped CNFs(N–CNFs)with a diameter of$20 nm are synthesized through a simple and scalable sol-gel method based on the self-assembly of phenolic resin and cetyltrimethylammonium *** employed in aqueous supercapacitors,the obtained activated N–CNFs manifest a high gravimetric/areal capacitance(380 Fg-1/1.7 Fcm-2)as well as outstanding rate capability and cycling ***,the activated N–CNFs also demonstrate excellent capacitive performance(330 Fg-1)in flexible quasi-solid-state *** remarkable electrochemical performance as well as the easy and scalable synthesis makes the N–CNFs a highly promising electrode material for supercapacitors.

关键词： Macroscopic synthesis Carbon Nanofibers N–doping Supercapacitor

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Boosting the electrochemical performance and reliability of conducting polyme microelectrode via intermediate graphene for on-chip asymmetric micro-supercapacitor

引用

Journal of Energy Chemistry 2020年第10期29卷 224-232页

作者： Muhammad Tahir Liang He Wei Yang Xufeng Hong Waqas Ali Haider Hui Tang Zhe Zhu kwadwo asare owusu Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

High-performance anode is hurdle for on-chip planar microsupercapacitor(MSC).Polypyrrole(PPy)is a highly attractive pseudocapacitive material,but its low cycling stability,and low adhesion with current collector hinder its *** we propose one-prong generic strategy to boost the cycling stability of *** our strategy,the electrochemical deposition of multilayered reduced graphene oxide(rGO)on micropatterned Au is utilized,and the resultant rGO@Au pattern is then used for growing highly porous PPy nanostructures by facile electrochemical *** fabricated PPy anode on rGO@Au has quasi rectangular cyclic voltammetry curves up to-0.7 V and exceptional cycling stability,retaining82%of capacitance after 10,000 charge/discharge cycles in 2 M KCl *** outstanding reliability of PPy on rGO@Au is due to the flexibility of rGO,accommodating structural pulverization and providing a promising background for the nucleation of highly porous ***,an all-polymer based asymmetric aqueous MSC(AMSC)is constructed with PPy anode and PEDOT cathode,which exhibited excellent electrochemical performance compared with conventional symmetric MSCs based on conducting *** constructed AMSC delivered a maximum areal capacitance of 15.9 m F cm^-2(99.3 F cm^-3),high specific energy and power densities of 4.3μWh cm^-2(27.03 mWh cm^-3)and 0.36 W cm^-2(0.68 W cm^-3)at 1.4 V,*** enhanced electrochemical performances can be illustrated by nucleation mechanism,in which surface topology of r GO generates a promising background for nucleation and electrochemical growth of nanoporous pseudocapacitive conducting polymers with superior interfacial contact and improved surface area.

关键词： Electrochemical polymerization Nucleation Asymmetric microsupercapacitors

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MoS2/MnO2 heterostructured nanodevices for electro- chemical energy storage

引用

Nano Research 2018年第4期11卷 2083-2092页

作者： Xiaobin Liao Yunlong Zhao Junhui Wang Wei Yang Lin Xu Xiaocong Tian Yi Shuang kwadwo asare owusu Mengyu Yan Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of Chemistry and Chemical Biology Harvard University Cambridge Massachusetts 02138 USA Department of Chemistry University of California Berkeley California 94720 USA

Hybrid or composite heterostructured electrode materials have been widely studied for their potential application in electrochemical energy storage. Whereas their physical or chemical properties could be affected significantly by modulating the heterogeneous interface, the underlying mechanisms are not yet fully understood. In this work, we fabricated an electrochemical energy storage device with a MoS2 nanosheet/MnO2 nanowire heterostructure and designed two charge/discharge channels to study the effect of the heterogeneous interface on the energy storage performances. Electrochemical measurements show that a capadty improvement of over 50% is achieved when the metal current collector was in contact with the MnO2 instead of the MoS2 side. We propose that this enhancement is due to the unidirectional conductivity of the MoS2/MnO2 heterogeneous interface, resulting from the unimpeded electrical transport in the MnO2-MoS2 channel along with the blocking effect on the electron transport in the MoS2-MnO2 channel, which leads to reaction kinetics optimization. The present study thus provides important insights that will improve our understanding of heterostructured electrode materials for electrochemical energy storage.

关键词： energy storage nanoscale device heterostructure electrochemical performance electrical transport

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Activated carbon clothes for wide-voltage high-energy-density aqueous symmetric supercapacitors

引用

Chinese Chemical Letters 2020年第6期31卷 1620-1624页

作者： kwadwo asare owusu Zhaoyang Wang Longbing Qu Zi'ang Liu Jaafar Abdul-Aziz Mehrez Qiulong Wei Liang Zhou Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Mechanical Engineering The University of MelbourneParkvilleVIC 3010Australia Department of Materials Science and Engineering University of California Los AngelesCA 90095-1595USA

Commercial carbon clothes have the potential to be utilized as supercapacitor electrodes due to their low cost and high ***,the negligible surface area of the carbon clothes serves as a serious impediment to their ***,we report a facile calcination activation method for carbon cloths to realize remarkable comprehensive electrochemical *** activated carbon cloths deliver a high areal capacitance(1700 mF/cm^2),good rate capability,and stable cycling performance up to 20,000 *** to the stability in the wide potential window,a designed symmetric capacitor can function in a cell voltage of 2.0 V and delivers high volumetric and gravimetric energy densities of 7.62 mWh/cm^3 and 18.2 Wh/kg,*** remarkable electrochemical performance is attributed to rich microporosity with high surface area,superior electrolyte wettability,and stability in wide potential window.

关键词： Activated carbon cloth Microporosity Aqueous symmetric supercapacitors Energy density Voltage window

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Pomegranate-Inspired Structures Constructed by Monodisperse Microporous Carbon Spheres for High-Volumetric-Capacitance Supercapacitor

Pomegranate-Inspired Structures Constructed by Monodisperse ...

引用

中国化学会第三届中国能源材料化学研讨会

作者： Shihao Feng Zhenhui Liu Qiang Yu Zechao Zhuang kwadwo asare owusu Qiang Chen Zilan Li Shida Fu Liang Zhou Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

＜正＞Carbonaceous materials,especially microporous carbon,have aroused great interests in the R＆D（research and development） of supercapacitor due to the low specific weight and large surface ***,the rich porosity usually is in conflict with high stack density,resulting in carbon materials with good specific capacitance but low volumetric capacitance.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Root System Traits Contribute to Variability and Plasticity in Response to Phosphorus Fertilization in 2 Field-Grown Sorghum[Sorghum bicolor(L.)Moench]Cultivars

引用

Plant Phenomics 2023年第1期5卷 6-21页

作者： Michael O.Adu Paul A.asare David O.Yawson kwadwo K.Amoah Kofi Atiah Matthew K.Duah Alex Graham Department of Crop Science School of AgricultureCollege of Agriculture and Natural SciencesUniversity of Cape CoastCape CoastGhana Centre for Resource Management and Environmental Studies(CERMES) The University of the West IndiesCave Hill CampusP.O.Box 64Bridgetown BB11000Barbados Department of Soil Science School of AgricultureCollege of Agriculture and Natural SciencesUniversity of Cape CoastCape CoastGhana

Due to roots'physical and physiological roles in crop productivity,interest in root system architecture(RSA)and plasticity in responses to abiotic stresses is *** is significant for the food security of millions of *** deficiency is an important limitation of sorghum *** is little information on the RSA-based responses of sorghum to variations in external P supply([P]_(ext)).This study evaluated the phenotypic plasticity and RSA responses to a range of[P]_(ext) in 2 sorghum *** results showed that both genotypes responded to[P]_(ext) but with significant variations in about 80%of the RSA traits *** biomass and most RSA traits increased with increasing[P]_(ext).Plasticity was both genotype-and *** most RSA traits,the white sorghum genotype showed significantly higher plasticity than the red genotype,with the former having about 28.4%higher total plasticity than the *** traits,such as convex area,surface area,total root length,and length diameter ranges,showed sizeable genetic *** biomass had a high degree of plasticity,but root number and angle traits were the leading contributors to *** results suggested 2 root trait spectra:root exploration and developmental spectrum,and there was an indication of potential trade-offs among groups of root *** is concluded that RSA traits in sorghum contribute to variability and plasticity in response to[P]_(ext).Given that there might be trade-offs among sorghum root traits,it would be instructive to determine the fundamental constraints underlying these trade-offs.

关键词： Root instru constraints

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：