نتایج جستجو برای: ribbon carbon doping

تعداد نتایج: 309099  

Journal: :Physical chemistry chemical physics : PCCP 2014
Liming Yang Kui Xie Lan Wu Qingqing Qin Jun Zhang Yong Zhang Ting Xie Yucheng Wu

A composite cathode based on redox-stable La0.2Sr0.8TiO(3+δ) (LSTO) can perform direct carbon dioxide electrolysis; however, the insufficient electro-catalytic activity limits the electrode performances and current efficiencies. In this work, catalytically active scandium is doped into LSTO to enhance the electro-catalytic activity for CO2 electrolysis. The structures, electronic conductivities...

2017
Lingting Ye Minyi Zhang Ping Huang Guocong Guo Maochun Hong Chunsen Li John T. S. Irvine Kui Xie

Sustainable future energy scenarios require significant efficiency improvements in both electricity generation and storage. High-temperature solid oxide cells, and in particular carbon dioxide electrolysers, afford chemical storage of available electricity that can both stabilize and extend the utilization of renewables. Here we present a double doping strategy to facilitate CO2 reduction at pe...

Journal: :The journal of physical chemistry letters 2012
Dingshan Yu Yuhua Xue Liming Dai

Using a mixture of ferrocene, pyridine, and triphenylphosphine as precursors for injection-assisted chemical vapor deposition (CVD), we prepared the first vertically aligned multiwalled carbon nanotube array co-doped with phosphorus (P) and nitrogen (N) with a relatively high P-doping level (designated as PN-ACNT). We have also demonstrated the potential applications of the resultant PN-ACNTs a...

2015
In-Yup Jeon Min Choi Hyun-Jung Choi Sun-Min Jung Min-Jung Kim Jeong-Min Seo Seo-Yoon Bae Seonyoung Yoo Guntae Kim Hu Young Jeong Noejung Park Jong-Beom Baek

Heteroatom doping into the graphitic frameworks have been intensively studied for the development of metal-free electrocatalysts. However, the choice of heteroatoms is limited to non-metallic elements and heteroatom-doped graphitic materials do not satisfy commercial demands in terms of cost and stability. Here we realize doping semimetal antimony (Sb) at the edges of graphene nanoplatelets (Gn...

2017
Marc Monthioux Emmanuel Flahaut E. Flahaut

A new generation of carbon nanotubes (CNTs), which may be named “meta-nanotubes”, is more and more the focus of the research worldwide. They result from the transformation of “regular” CNTs by various ways such as functionalisation, doping, substitution, etc. The new nanomaterials thereby created are likely to exhibit new behaviors, specifically regarding properties that pristine CNTs do not po...

Journal: :Chemistry 2015
Chen Cheng Xianjun Tan Deli Lu Lingzhi Wang Tapas Sen Juying Lei Ahmed Mohamed El-Toni Jinlong Zhang Fan Zhang Dongyuan Zhao

Mesoporous silica synthesized from the cocondensation of tetraethoxysilane and silylated carbon dots containing an amide group has been adopted as the carrier for the in situ growth of TiO2 through an impregnation-hydrothermal crystallization process. Benefitting from initial complexation between the titania precursor and carbon dot, highly dispersed anatase TiO2 nanoparticles can be formed ins...

Journal: :Physical chemistry chemical physics : PCCP 2012
Dan Li Yudai Huang Neeraj Sharma Zhixin Chen Dianzeng Jia Zaiping Guo

A composite cathode material for lithium ion battery applications, Mo-doped LiFePO(4)/C, is obtained through a facile and fast microwave-assisted synthesis method. Rietveld analysis of LiFePO(4)-based structural models using synchrotron X-ray diffraction data shows that Mo-ions substitute onto the Fe sites and displace Fe-ions to the Li sites. Supervalent Mo(6+) doping can act to introduce Li i...

2018
Jiaoyang Li Yumin Qian Li Wang Xiangming He

Serving as conductive matrix and stress buffer, the carbon matrix plays a pivotal role in enabling red phosphorus to be a promising anode material for high capacity lithium ion batteries and sodium ion batteries. In this paper, nitrogen-doping is proved to effective enhance the interface interaction between carbon and red phosphorus. In detail, the adsorption energy between phosphorus atoms and...

Journal: :Physical chemistry chemical physics : PCCP 2015
Dae-wook Kim Oi Lun Li Nagahiro Saito

Heteroatom-doped carbon matrices have been attracting significant attention due to their superior electrochemical stability, light weight and low cost. Hence, in this study, various types of heteroatom, including single dopants of N, B and P and multiple dopants of B-N and P-N with a carbon matrix were synthesized by an innovative method named the solution plasma process. The heteroatom was dop...

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