检索结果-南通市图书馆

enhanced performance of ruthenium dye-sensitized solar cell by employing an organic co-adsorbent of N,N'-bis((pyridin-2-yl)(methyl)methylene)-o-phenylenediamine

引用

Chinese Chemical Letters 2016年第1期27卷 127-134页

作者： Yang Xu Liang-Sheng Qiang Yu-Lin Yang Li-Guo Wei Ping Wang Rui-Qing Fan Department of Chemistry Harbin Institute of Technology College of Environmental and Chemical Engineering Heilongjiang University of Science and Technology

A pyridine-anchor co-adsorbent of N,N＇-bis（（pyridin-2-yl）（methyl） methylene）-o-phenylenediamine（named BPPI） is prepared and employed as co-adsorbent in dye-sensitized solar cells（DSSCs）. The prepared co-adsorbent could overcome the deficiency of N719 absorption in the low wavelength region of visible spectrum, offset competitive visible light absorption of I_3^-, enhance the spectral responses of the co-adsorbed TiO_2 film in region from 300 nm to 750 nm, suppress charge recombination, prolong electron lifetime, and decrease the total resistance of DSSCs. The optimized cell device co-sensitized by BPPI/N719 dye gives a short circuit current density of 12.98 m A cm^（-2）, an open circuit voltage of 0.73 V,and a fill factor of 0.66 corresponding to an overall conversion efficiency of 6.22% under standard global AM 1.5 solar irradiation, which is much higher than that of device solely sensitized by N719（5.29%）under the same conditions. Mechanistic investigations are carried out by various spectral and electrochemical characterizations.

关键词： Dye-sensitized solar cells Co-adsorbent enhanced performance Co-sensitization

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

Synergistically enhancing cycleability and rate performance of sodium titanate nanowire anode via hydrogenation and carbon coating for advanced sodium ion batteries

引用

Rare Metals 2022年第12期41卷 4075-4085页

作者： De-Liang Ba Wei-Hua Zhu Yuan-Yuan Li Jin-Ping Liu School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China School of Chemistry Chemical Engineering and Life ScienceState Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070China State Center for International Cooperation on Designer Low-Carbon and Environmental Materials and School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Layered alkali-metal titanate materials are considered as attractive anodes for sodium ion batteries due to their favorable safety and low ***,their practical implementation faces major challenges of low electronic conductivity and inevitable volume variation during Na^(+)intercalation and de-intercalation,which are generally difficult to conquer by a single modification ***,a synergistic ally enhancing strategy to promote the electrochemical performance of Na_(2)Ti_(2)O_(5)nanowire array anode via simultaneous hydrogenation and carbon coating is *** leads to partially reduced titanium;together with conductive carbon layer,it endows Na_(2)Ti_(2)O_(5)with fast electron transport and structural *** resulting H-Na_(2)Ti_(2)O_(5)@C anode exhibits enhanced rate capability(8.0C,165 mAh·g^(-1))and stable cycle performance up to 1000 times in sodium-ion half-cells(the capacity of H-Na_(2)Ti_(2)O_(5)without carbon fades drastically after only 100 cycles).In addition,a newcoupling full cell is further designed with graphene hybridized high-voltage Na_(3)(VO_(0.5))_(2)(PO4)_(2)F_(2)as cathode,capable of delivering a high specific energy density of 212.1 Wh·kg^(-1)(based on the mass of both anode and cathode)and good rate and cycling *** work may offer inspiration for synergistic optimization of electrode materials for advanced electrochemical energy storage devices.

关键词： Sodium ion batteries(SIBs) Na2Ti2O5 nanowire Hydrogenation Carbon coating enhanced performance

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

Regioregular Asymmetric Diketopyrrolopyrrole Copolymers with Good Molecular Ordered Assembly Ability for High-performance Polymer Transistors

引用

Chinese Journal of Polymer Science 2023年第8期41卷 1215-1222,I0006页

作者： Qing-Qing Liu Jia-Xin Yang Man Zhao Can Gao Bo Guan Huan-Li Dong Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Introduction of asymmetric units into conjugated polymers is an important strategy to regulate the photophysical and electronic properties of polymers,as asymmetric units can not only regulate solubility and energy levels,but also molecular stacking and orientation,thus giving much higher optoelectronic ***,very few studies have been reported in this *** semiconducting properties of conjugated polymers could be regulated through regioregularity ***,we took the asymmetric thiophene/pyridine side group DPP as core and developed the regioregular monomer T-Py-DPP through three steps:alkyl chain introduction,tin monomer coupling and NBS double *** T-Py-DPP monomer was polymerized into reg-PPy TDPP-2FBT with a head-to-head *** regioregularity of T-Py-DPP unit endowed reg-PPy TDPP-2FBT with backbone planarity,self-assembly orientation,network-like morphology and high crystallinity in films,thus the superior bipolar transport *** highest hole and electron mobilities of reg-PPy TDPP-2FBT were 0.93 and 0.57 cm^(2)·V^(-1)·s^(-1),respectively,with 40%improvement relative to the regiorandom polymer.

关键词： Asymmetric copolymers Regioregularity Good orientation Organic field-effect transistor enhanced performance

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

Novel Composite Membranes Incorporating Quaterniazed Carbon-based Nanoparticles for Efficient Removal of Emerging Contaminants

Novel Composite Membranes Incorporating Quaterniazed Carbon-...

引用

河南省化学会2020年学术年会

作者： Yongxin Wang Yuefei Song Xifan Li Yueke Sun Xueshuang Bai School of Environment Henan Key Laboratory for Environmental Pollution Control Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control Ministry of Education Henan Normal University

As pollutant constituents getting complicated and the ever increasing public demand for water quality,some deep/ultra-deep treatment technologies have attracted more attention of researchers to continuously improve wastewater treatment efficiency on the basis of upgrading *** this work,two novel positively-charged thin-film nanocomposite (TFN)membranes were successfully prepared by incorporating different quaternized carbon-based nanoparticles (QCBNPs) into PEI aqueous solution (0.5 wt.%) via interfacial polymerization (IP),as illustrated in Fig.1,in order to improve their isoelectric point and hydrophilic ***,0.04 g·Land 0.2 g·Lwere identified as the optimal doping content of quaternized graphene oxide (QGO) and quaternized carbon quantum dots (QCQDs) for preparing TFN membranes on the basis of their perm-selectivity orthogonal experimental *** showed that the doping of hydrophilic quaternized monomers could not only create new fast water transport channels,but also enhance selective separation of both resultant TFN *** terms of those two CBNPs,QCQDs manifested superior permeate flux (25 LMH·bar) and great rejection (all greater than 90%) of four types of pharmaceuticals (PhACs) with molecular weights lower than 300 Da and different ionization (p Ka) and hydrophobicity (log K).In addition,the as-prepared TFN membrane had an outstanding antifouling property when bovine serum albumin was selected as the model ***,this work proposed a viable strategy for fabricating positively charged TFN membrane towards efficient removal of emerging small-sized organic contaminants.

关键词： Nanofiltration Carbon-based nanoparticles Positive charged membrane enhanced performance

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

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

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

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：