ChemPhysMater最新文献_第9页

Polaron-assisted nonadiabatic dynamics in protonated TiO2 with surface water molecule 极化子辅助表面水分子质子化TiO2的非绝热动力学

ChemPhysMater Pub Date : 2023-04-01 DOI: 10.1016/j.chphma.2023.02.005

Zhongfei Xu, Chuan Tong, Rutong Si, G. Teobaldi, Limin Liu

引用次数: 0

Lyotropic liquid crystals of tetradecyldimethylaminoxide in water and the in situ formation of gold nanomaterials 十四烷基二甲氨基氧化物在水中的溶致液晶和金纳米材料的原位形成

ChemPhysMater Pub Date : 2023-04-01 DOI: 10.1016/j.chphma.2022.06.001

Na Zhang , Aoxue Xu , Baoyong Liu , Nicolas Godbert , Hongguang Li

{"title":"Lyotropic liquid crystals of tetradecyldimethylaminoxide in water and the in situ formation of gold nanomaterials","authors":"Na Zhang , Aoxue Xu , Baoyong Liu , Nicolas Godbert , Hongguang Li","doi":"10.1016/j.chphma.2022.06.001","DOIUrl":"https://doi.org/10.1016/j.chphma.2022.06.001","url":null,"abstract":"<div>Lyotropic liquid crystals (LLCs) produced by the self-assembly of surfactant in water represent an important class of highly ordered soft materials that have a wide range of applications. This study investigates the LLCs formed by a zwitterionic surfactant (tetradecyldimethylaminoxide, C14DMAO) in water. The organization of C14DMAO within the LLCs was determined based on a detailed analysis of small-angle X-ray scattering measurements and polarized microscopy observations of a typical sample. Additional to the singe-phase region, which has a hexagonal organization, several two-phase regions were observed, exhibiting the coexistence of hexagonal/cubic, cubic/lamellar, and hexagonal/lamellar phases. The phase behavior showed an obvious dependence on temperature, with more pronounced two-phase regions at lower temperatures. Using the LLCs as a matrix, Au nanospheres, nanoellipsoids, and nanorods were prepared without requiring additional reducing reagents. These three- and one-dimensional Au nanomaterials could be converted to two-dimensional plates via the introduction of a small amount of cationic surfactant to the LLCs, such as cetyltrimethylammonium bromide (CTAB) and 1-hexadecyl-3-methylimidazolium bromide ([C16MIm]B), which showed pronounced surface-enhanced Raman scattering activity towards solid rhodamine. The LLCs loaded with CTAB (or [C16MIm]B) and HAuCl4 exhibited slightly different structures and mechanical strength from the original LLCs, thereby forming a new class of highly crowded colloidal materials.</div>","PeriodicalId":100236,"journal":{"name":"ChemPhysMater","volume":"2 2","pages":"Pages 134-140"},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50199481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Elastic properties of disordered binary hcp-Fe alloys under high pressure: Effects of light elements 无序二元hcp-Fe合金在高压下的弹性性能：轻元素的影响

ChemPhysMater Pub Date : 2023-04-01 DOI: 10.1016/j.chphma.2022.09.001

Zhenwei Niu , Shuqiong Zeng , Mei Tang , Zaixiu Yang

引用次数: 0

Phosphor-aluminosilicate CsPbX3 perovskite fluorescent glass with low formation temperature for photoluminescence display applications 低形成温度的磷铝硅酸盐CsPbX3钙钛矿荧光玻璃，用于光致发光显示应用

ChemPhysMater Pub Date : 2023-03-01 DOI: 10.1016/j.chphma.2023.03.001

B. Liu, Jinkai Li, Bingqiang Cao, Lei Zhang, Z. Liu

引用次数: 0

Carbon materials for metal-ion batteries 金属离子电池用碳材料

ChemPhysMater Pub Date : 2023-03-01 DOI: 10.1016/j.chphma.2023.02.002

Z. Qiu, Feng Cao, G. Pan, Chen Li, Minghua Chen, Yongqi Zhang, Xinping He, Yang Xia, X. Xia, Wenkui Zhang

引用次数: 0

Boosting the high-rate performance and cycling life of NaTi2(PO4)3 anode by forming N-doped carbon coating derived from polyacrylonitrile 通过形成聚丙烯腈衍生的n掺杂碳涂层，提高了NaTi2(PO4)3阳极的高速性能和循环寿命

ChemPhysMater Pub Date : 2023-03-01 DOI: 10.1016/j.chphma.2023.02.004

Huan Yang, Zhongnian Yang, Y. Bai, Wenjing Du, Yuheng Wang, Jiru Xian

引用次数: 0

Solvation number, thermochemical parameter, and viscosity study of sweeteners in aqueous and non-aqueous media through ultrasonic measurements 通过超声测量研究甜味剂在水和非水介质中的溶剂化数、热化学参数和粘度

ChemPhysMater Pub Date : 2023-02-01 DOI: 10.1016/j.chphma.2023.02.001

J.H. Rakini Chandrasekaran, S. Nithiyanantham

引用次数: 0

Simultaneously enhancing the electronic and ionic conductivities of Li2ZnTi3O8 via modification with polyacrylonitrile-derived carbon for high-performance anodes 聚丙烯腈基碳改性同时提高高性能阳极Li2ZnTi3O8的电子电导率和离子电导率

ChemPhysMater Pub Date : 2023-01-01 DOI: 10.1016/j.chphma.2022.01.002

Yujun Bai , Jiali Qin , Jiaxuan Cai , Huiling Zhu , Tao Li , Yanxiang Wang , Yongxin Qi

{"title":"Simultaneously enhancing the electronic and ionic conductivities of Li2ZnTi3O8 via modification with polyacrylonitrile-derived carbon for high-performance anodes","authors":"Yujun Bai , Jiali Qin , Jiaxuan Cai , Huiling Zhu , Tao Li , Yanxiang Wang , Yongxin Qi","doi":"10.1016/j.chphma.2022.01.002","DOIUrl":"https://doi.org/10.1016/j.chphma.2022.01.002","url":null,"abstract":"<div>Polyacrylonitrile (PAN) with C<img>N bonds can be converted to nitrogen-doped carbon during carbonization, which enhances electronic conductivity by compensating for the deficiency of the Li2ZnTi3O8 (LZTO) anode. In this study, LZTO was modified by carbonizing a homogeneous PAN/LZTO powder mixture at approximately 800 ℃ for 5 h in nitrogen stream to uniformly coat nitrogen-doped carbon around the LZTO particles and to yield nitrogen-doped LZTO. PAN-60 exhibited a capacity retention of 74.8% as the current density increased from 0.1 to 1.6 A g−1, and had charge/discharge capacities of 250.1/250.8 mAh g−1 even after 1100 cycles at 0.5 A g−1. Structural and compositional analysis along with electrochemical tests showed that the uniform nitrogen-doped carbon coating and the nitrogen-doped LZTO favor electron transfer, while the defects induced by nitrogen-doping in LZTO promote Li-ion migration. The enhanced electronic and ionic conductivities are favorable to alleviate the polarization during cycling, and thus are responsible for the optimized performance.</div>","PeriodicalId":100236,"journal":{"name":"ChemPhysMater","volume":"2 1","pages":"Pages 43-51"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Two-dimensional Dirac materials: Tight-binding lattice models and material candidates 二维Dirac材料：紧束缚晶格模型和候选材料

ChemPhysMater Pub Date : 2023-01-01 DOI: 10.1016/j.chphma.2022.04.009

Runyu Fan, Lei Sun, Xiaofei Shao, Yangyang Li, Mingwen Zhao

引用次数: 10

Synergistic combination of a Co-doped σ-MnO2 cathode with an electrolyte additive for a high-performance aqueous zinc-ion battery 用于高性能水性锌离子电池的钴掺杂σ-MnO2阴极与电解质添加剂的协同组合

ChemPhysMater Pub Date : 2023-01-01 DOI: 10.1016/j.chphma.2022.04.007

Shuhua Yang , Le Zhang , Mengjiao Luo , Yanwei Cui , Jieqiang Wang , Degang Zhao , Chao Yang , Xiutong Wang , Bingqiang Cao

{"title":"Synergistic combination of a Co-doped σ-MnO2 cathode with an electrolyte additive for a high-performance aqueous zinc-ion battery","authors":"Shuhua Yang , Le Zhang , Mengjiao Luo , Yanwei Cui , Jieqiang Wang , Degang Zhao , Chao Yang , Xiutong Wang , Bingqiang Cao","doi":"10.1016/j.chphma.2022.04.007","DOIUrl":"https://doi.org/10.1016/j.chphma.2022.04.007","url":null,"abstract":"<div>The key challenges in aqueous zinc-manganese dioxide batteries (MnO2//Zn) are their poor electrochemical kinetics and stability, which are mainly due to low conductivity and the inevitable dissolution of MnO2. A synergistic combination of a Co-doped σ-MnO2 electrode (Co-MnO2) and a Co(CH3COO)2•4H2O (CoAc) electrolyte additive is here developed to design a high-performance aqueous MnO2//Zn battery (denoted as a Co-MnO2//Zn battery with CoAc). The introduction of Co ions (Co3+/Co2+) into the σ-MnO2 electrode is achieved via a facile one-step electrodeposition method. Benefitting from the synergistic coupling effect of the Co-MnO2 electrode and the CoAc electrolyte additive, the fabricated Co-MnO2//Zn battery with CoAc shows a commendable discharge capacity of 313.8 mAh g−1 at 0.5 A g−1, excellent rate performance, excellent durability over 1000 cycles (∼ 92% capacity retention at 1.0 A g−1) and admirable energy density (439.3 Wh kg−1), which is a significant improvement compared with an un-doped σ-MnO2//Zn battery.</div>","PeriodicalId":100236,"journal":{"name":"ChemPhysMater","volume":"2 1","pages":"Pages 77-82"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50193371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5