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- Author:
- Zhang, Linghai; Sit, Patrick H.-L.
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9042-9049
- ISSN:
- 2050-7496
- Subject:
- activation energy; air; chemical bonding; density functional theory; dissociation; electrons; lead; oxygen; photochemical reactions
- Abstract:
- ... Excess electrons from photo-excitation, impurities and defects play a significant role in the degradation of CH₃NH₃PbI₃ (MAPbI₃) perovskite in air. However, this role has not fully been understood. Herein, the interactions between the MAI-terminated MAPbI₃ (110) surface and O₂ molecules in the presence of mobile excess electrons were studied by density functional theory calculations. Our results s ...
- DOI:
- 10.1039/c7ta01091e
-
http://dx.doi.org/10.1039/c7ta01091e
- Author:
- Zhou, Jingjing; Yang, Jun; Xu, Zhixin; Zhang, Tao; Chen, Zhenying; Wang, Jiulin
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9350-9357
- ISSN:
- 2050-7496
- Subject:
- anodes; batteries; carbon; carbonates; cathodes; coordination polymers; electrochemistry; electrolytes; energy density; lithium; nanoparticles; porous media; selenium
- Abstract:
- ... Rechargeable lithium–selenium (Li–Se) batteries are promising electrochemical systems with higher energy density than traditional Li ion batteries. Nevertheless, the dissolution of high-order lithium selenides and the shuttle effect in electrolytes lead to low Se utilization, inferior capacity and poor cycling performance. This study proposes a combination of nanostructured Se cathode materials an ...
- DOI:
- 10.1039/c7ta01564j
-
http://dx.doi.org/10.1039/c7ta01564j
- Author:
- Jung, Young Hwa; Park, Woon Bae; Pyo, Myoungho; Sohn, Kee-Sun; Ahn, Docheon
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 8939-8945
- ISSN:
- 2050-7496
- Subject:
- algorithms; batteries; cathodes; electric potential difference; electrochemistry; manganese
- Abstract:
- ... Low-level doping of electrode materials is known to be a common and simple method that can be used to improve electrode performance. However, multi-element doping compositions have generally been confined to the empirical intuition of researchers via trial-and-error. Here we propose a more systematic approach to designing multi-element doping compositions for electrode materials via a non-dominate ...
- DOI:
- 10.1039/c6ta10228j
-
http://dx.doi.org/10.1039/c6ta10228j
- Author:
- Yang, Yurong; Gao, Peng; Wang, Ying; Sha, Linna; Ren, Xiaochen; Zhang, Jianjiao; Yang, Piaoping; Wu, Tingting; Chen, Yujin; Li, Xiaobo
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9198-9203
- ISSN:
- 2050-7496
- Subject:
- ambient temperature; cobalt; energy; fuels; hydrogen; photocatalysis; photocatalysts; titanium dioxide
- Abstract:
- ... The production and storage of hydrogen are the two most critical challenges for hydrogen energy development. In addition, converting H₂ from the as-obtained gas state to a stable storage state consumes excess energy and increases the practical cost of hydrogen fuel. Accordingly, we now present a simple hybrid material system (Co/TiO₂) that efficiently synchronizes hydrogen photogeneration in water ...
- DOI:
- 10.1039/c7ta00818j
-
http://dx.doi.org/10.1039/c7ta00818j
- Author:
- Du, Ya; Yang, Haishen; Wan, Shun; Jin, Yinghua; Zhang, Wei
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9163-9168
- ISSN:
- 2050-7496
- Subject:
- adsorption; carbon dioxide; catalysts; catalytic activity; coordination polymers; cycloaddition reactions; epoxides; industrial applications; nitrogen; surface area; tetrabutylammonium compounds; titanium
- Abstract:
- ... A novel type of porous coordination polymer with titanium alkoxide linkages (Ti-PCP) was successfully constructed through reaction of a 1,3-diol-substituted shape-persistent arylene–ethynylene macrocycle with Ti(OⁱPr)₄. The polymer exhibits a high Brunauer–Emmett–Teller (BET) surface area (1029 m² g⁻¹) and good adsorption selectivity for CO₂ over N₂. With n-Bu₄NBr as a co-catalyst, Ti-PCP can serv ...
- DOI:
- 10.1039/c7ta01188a
-
http://dx.doi.org/10.1039/c7ta01188a
- Author:
- Ikuhara, Yumi H.; Gao, Xiang; Fisher, Craig A. J.; Kuwabara, Akihide; Moriwake, Hiroki; Kohama, Keiichi; Iba, Hideki; Ikuhara, Yuichi
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9329-9338
- ISSN:
- 2050-7496
- Subject:
- cathodes; cation exchange; deformation; electrochemistry; electron microscopy; energy; geometry; gold; lithium; lithium batteries; oxygen; simulation models; spectroscopy
- Abstract:
- ... High-quality thin films with well-defined fast lithium ion diffusion pathways and minimal structural discontinuities are needed to develop high-performance electrodes for all-solid-state Li-ion batteries. Achieving this requires an understanding of the electrochemical processes and structural changes that take place within an electrode during charge/discharge. Here we report the successful synthes ...
- DOI:
- 10.1039/c6ta10084h
-
http://dx.doi.org/10.1039/c6ta10084h
- Author:
- Liu, Jian; An, Tong; Chen, Zhihan; Wang, Zizhao; Zhou, Han; Fan, Tongxiang; Zhang, Di; Antonietti, Markus
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 8933-8938
- ISSN:
- 2050-7496
- Subject:
- carbon nitride; catalysts; coatings; crosslinking; glass; graphene; hydrogels; light; nanosheets; photocatalysis; polymers; prototypes; temperature; turbidity
- Abstract:
- ... Graphitic carbon nitride (g-C₃N₄) has emerged as an active visible-light-driven photo(electro)catalyst. However, the rediscovery of g-C₃N₄ has also spurred enormous interest in other, very versatile applications beyond catalysis. Herein, graphitic carbon nitride nanosheets could be used as photocatalytic initiators and cross-linking sites for the temperature responsive poly(N-isopropylacrylamide) ...
- DOI:
- 10.1039/c7ta02923c
-
http://dx.doi.org/10.1039/c7ta02923c
- Author:
- Yu, Fu-Da; Que, Lan-Fang; Wang, Zhen-Bo; Xue, Yuan; Zhang, Yin; Liu, Bao-Sheng; Gu, Da-Ming
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9365-9376
- ISSN:
- 2050-7496
- Subject:
- cathodes; coprecipitation; electric potential difference; electrochemistry; energy density; lithium batteries; microparticles; nanocrystals
- Abstract:
- ... Layered Li-rich oxide (LLRO) is an attractive candidate for high-energy-density and high-voltage cathode material for next generation lithium ion batteries because of its high specific capacity and low cost. There still remain challenges in simultaneously achieving a multi-functional structure and composition in a LLRO, to achieve better electrochemical performance. Here we report a controllable c ...
- DOI:
- 10.1039/c7ta02553j
-
http://dx.doi.org/10.1039/c7ta02553j
- Author:
- Huang, Hui; Yang, Lei; Sharma, Bigyan
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9418-9420
- ISSN:
- 2050-7496
- Subject:
- chemistry; solar cells; solar energy
- Abstract:
- ... Correction for ‘Recent advances in organic ternary solar cells’ by Hui Huang et al., J. Mater. Chem. A, 2017, DOI: 10.1039/c7ta00887b. ...
- DOI:
- 10.1039/c7ta90087b
-
http://dx.doi.org/10.1039/c7ta90087b
- Author:
- Li, Guodong; Aydemir, Umut; Wood, Max; An, Qi; Goddard III, William A.; Zhai, Pengcheng; Zhang, Qingjie; Snyder, G. Jeffrey
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9050-9059
- ISSN:
- 2050-7496
- Subject:
- calcium; cations; chemical bonding; crystals; deformation; density functional theory; magnesium; shear strength
- Abstract:
- ... Recent experiments have uncovered n-type Zintl compounds including layered Mg₃Sb₂ with high thermoelectric efficiency. However, until now the mechanics of Mg₃Sb₂, which is important to understand for its widespread applications, has not been investigated. Here, we used density functional theory (DFT) to determine the deformation and failure mechanism of Mg₃Sb₂, and compared with isostructural CaMg ...
- DOI:
- 10.1039/c7ta02080e
-
http://dx.doi.org/10.1039/c7ta02080e
- Author:
- Liu, Tingting; Li, Mian; Jiao, Chuanlai; Hassan, Mehboob; Bo, Xiangjie; Zhou, Ming; Wang, Hsing-Lin
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9377-9390
- ISSN:
- 2050-7496
- Subject:
- active sites; carbon nanotubes; catalytic activity; electric potential difference; electrical conductivity; electrochemistry; electrolysis; graphene; hydrogen production; models; nanoparticles; nanosheets; nitrides; oxygen production; porous media; potassium hydroxide
- Abstract:
- ... The relatively poor electrical conductivity of metal nitrides and the low density of their utilizable active sites have continually restricted their catalytic abilities for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) for highly efficient water splitting. Herein, for the first time, we report the design and synthesis of a novel three-dimensional (3D) hierarchically mes ...
- DOI:
- 10.1039/c7ta02217d
-
http://dx.doi.org/10.1039/c7ta02217d
- Author:
- Burton, Lee A.; Kumagai, Yu; Walsh, Aron; Oba, Fumiyasu
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9132-9140
- ISSN:
- 2050-7496
- Subject:
- chemical degradation; copper zinc tin sulfide; molybdenum; photovoltaic cells; tin; zirconium
- Abstract:
- ... Photoactive sulfide materials typically under-perform with respect to their theoretical maximum photovoltaic efficiency compared to other light absorbing solids. In an effort to reveal the underlying cause of this situation, we investigate several potential back contact metals for photovoltaic devices using the principles of band alignment; principles that have repeatedly shown to be of key import ...
- DOI:
- 10.1039/c7ta00673j
-
http://dx.doi.org/10.1039/c7ta00673j
- Author:
- Sun, Xiao Wen; Zhang, Yu Xin; Losic, Dusan
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 8847-8859
- ISSN:
- 2050-7496
- Subject:
- Bacillariophyceae; adsorption; algae; batteries; biocompatible materials; biophotonics; biosensors; drug delivery systems; electrodes; energy conversion; nanomaterials; physicochemical properties; silica; solar cells; surface area
- Abstract:
- ... Diatom silica, a 3-dimensional (3D) natural biomaterial generated from single cell algae with unique nano- and micro-morphologies and patterns is shown to have several exceptional structural, mechanical, optical, photonics, transport, and chemical properties optimized through millions of years of evolution. Diatom nanotechnology, a new research field, emerged recently to explore and apply this mat ...
- DOI:
- 10.1039/c7ta02045g
-
http://dx.doi.org/10.1039/c7ta02045g
- Author:
- Jaumann, Tony; Gerwig, Maik; Balach, Juan; Oswald, Steffen; Brendler, Erica; Hauser, Ralf; Kieback, Bernd; Eckert, Jürgen; Giebeler, Lars; Kroke, Edwin
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9262-9271
- ISSN:
- 2050-7496
- Subject:
- anodes; carbon; cost effectiveness; electrochemistry; electrolytes; feedstocks; lithium batteries; nanocrystallites; nanoparticles; silicon; siloxanes; specific energy
- Abstract:
- ... A novel and cost-effective synthesis of silicon nanocrystallites (<10 nm) sealed in hollow carbon spheres (nc-Si@HCS) is developed as a promising anode material for high-performance Li-ion batteries (LIBs). The preparation method involves dichlorosilane (H₂SiCl₂) as widely available feedstock, to form a hydrogen-rich polysiloxane as a precursor for the production of large quantities of silicon nan ...
- DOI:
- 10.1039/c7ta00188f
-
http://dx.doi.org/10.1039/c7ta00188f
- Author:
- Li, Jieyuan; Cui, Wen; Sun, Yanjuan; Chu, Yinghao; Cen, Wanglai; Dong, Fan
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9358-9364
- ISSN:
- 2050-7496
- Subject:
- alkalis; carbon nitride; electron transfer; electrons; photocatalysis
- Abstract:
- ... Suffering from inefficient charge separation and random charge transfer between its planes, the photocatalytic efficiency of g-C₃N₄ is still unsatisfactory. Herein, this challenging issue is tackled via intercalating alkalis into the interlayer space in g-C₃N₄ to create a vertical channel between the layers for directional electron delivery, which is a novel strategy to effectively quench charge r ...
- DOI:
- 10.1039/c7ta02183f
-
http://dx.doi.org/10.1039/c7ta02183f
- Author:
- Lin, Yu-Jie; Chen, Jyun-Wei; Hsiao, Po-Tsung; Tung, Yung-Liang; Chang, Cheng-Chung; Chen, Chih-Ming
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9081-9089
- ISSN:
- 2050-7496
- Subject:
- chemistry; electrolytes; energy transfer; fluorescence; fluorescent dyes; fluorescent lamps; green light; porous media; solar cells; titanium dioxide; ultraviolet radiation
- Abstract:
- ... A 1,8-naphthalimide derivative (H-NIM) containing an alkyl carboxylic chain has been rationally designed and synthesized for efficient utilization of fluorescence resonance energy transfer (FRET) in dye-sensitized solar cells (DSSCs). The H-NIM fluorophore, which can absorb ultraviolet light and emit green light under illumination, is doped into a TiO₂ mesoporous film with N719 molecules by a co-a ...
- DOI:
- 10.1039/c7ta00638a
-
http://dx.doi.org/10.1039/c7ta00638a
- Author:
- Xiong, Xin; Yuan, Dingzhong; Wu, Qinming; Chen, Fang; Meng, Xiangju; Lv, Ruihua; Dai, Daniel; Maurer, Stefan; McGuire, Robert; Feyen, Mathias; Müller, Ulrich; Zhang, Weiping; Yokoi, Toshiyuki; Bao, Xinhe; Gies, Hermann; Marler, Bernd; De Vos, Dirk E.; Kolb, Ute; Moini, Ahmad; Xiao, Feng-Shou
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9076-9080
- ISSN:
- 2050-7496
- Subject:
- ammonia; crystal structure; crystallization; crystals; nitrogen oxides; silica; zeolites
- Abstract:
- ... High silica CHA zeolite plays an important role in selective catalytic reduction of NOₓ with NH₃ (NH₃-SCR), but its synthesis is not highly efficient due to the use of a relatively high-cost structural directing agent (SDA) N,N,N-trimethyl-adamantammonium hydroxide (TMAdaOH) and relatively long crystallization time under hydrothermal conditions. Herein, we report an efficient and rapid synthesis o ...
- DOI:
- 10.1039/c7ta01749a
-
http://dx.doi.org/10.1039/c7ta01749a
- Author:
- Ning, Guoqing; Cao, Yanming; Qi, Chuanlei; Ma, Xinlong; Zhu, Xiao
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9299-9306
- ISSN:
- 2050-7496
- Subject:
- additives; chemistry; energy; graphene; lithium; nanopores
- Abstract:
- ... Porous carbon materials have been widely used as active materials, additives or substrates in energy storage devices using Li⁺ as the charge carrier. Fluctuations in cycling performance have been widely observed for Li storage by porous carbon materials, but the reason for such phenomena has not been clearly revealed. In this work, periodic variations of capacities and coulombic efficiencies are o ...
- DOI:
- 10.1039/c7ta01061c
-
http://dx.doi.org/10.1039/c7ta01061c
- Author:
- Wang, Bo; Liu, Wenqing; Li, Huanbin; Mai, Jiangquan; Liu, Shiyong; Lu, Xinhui; Li, Hanying; Shi, Minmin; Li, Chang-Zhi; Chen, Hongzheng
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 9396-9401
- ISSN:
- 2050-7496
- Subject:
- absorption; chemical bonding; energy; moieties; polymers; solar cells; solar energy
- Abstract:
- ... In this work, we present two new electron acceptors, TriPDI and Fused-TriPDI, in which three perylene diimide (PDI) moieties are tethered to a benzotrithiophene (BTT) core via either single bonds (TriPDI) or ring-fusion (Fused-TriPDI). TriPDI connects three PDIs to BTT via carbon–carbon single bonds, resulting in a rotatable and highly twisted skeleton. Instead, Fused-TriPDI, made through oxidativ ...
- DOI:
- 10.1039/c7ta02582c
-
http://dx.doi.org/10.1039/c7ta02582c
- Author:
- Yan, Lei; Lan, Hua; Yu, Haoxiang; Qian, Shangshu; Cheng, Xing; Long, Nengbing; Zhang, Ruifeng; Shui, Miao; Shu, Jie
- Source:
- Journal of materials chemistry A 2017 v.5 no.19 pp. 8972-8980
- ISSN:
- 2050-7496
- Subject:
- X-ray diffraction; anodes; chemistry; ions; lithium; lithium batteries; nanorods; nanowires; stainless steel
- Abstract:
- ... In this study, WNb₁₂O₃₃ with different morphologies were fabricated using various sample collectors through a facile electrospinning method. The WNb₁₂O₃₃ nanorods (NR-WNb₁₂O₃₃) were synthesized using a rounded roller as the sample collector, and the WNb₁₂O₃₃ nanowires (NW-WNb₁₂O₃₃) were prepared using a stainless steel net as a sample collector for the first time. The possible formation process of ...
- DOI:
- 10.1039/c7ta01784g
-
http://dx.doi.org/10.1039/c7ta01784g