Jump to Main Content
PubAg
Main content area
Search
« Previous |
1 - 20 of 54
|
Next »
Search Results
- Author:
- Huang, Zhaoming; Deng, Zhe; Shen, Yue; Chen, Wanqi; Liu, Wei; Xie, Meilan; Li, Yankai; Huang, Yunhui
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3000-3005
- ISSN:
- 2050-7496
- Subject:
- batteries; cathodes; cotton; diffusivity; electrochemistry; electron transfer; electrons; energy; energy density; ions; oxygen
- Abstract:
- ... As a candidate for next generation energy storage devices, the Li–O₂ battery (LOB) has been extensively studied in the last decade because of its ultrahigh theoretical energy density (≈3500 W h kg⁻¹) and inexhaustible “cathode material”—oxygen. Unlike other batteries with a closed configuration, the discharge/charge process of the LOB involves complicated electrochemical reactions at multi-phase i ...
- DOI:
- 10.1039/c9ta00017h
-
http://dx.doi.org/10.1039/c9ta00017h
- Author:
- Ifraemov, Raya; Shimoni, Ran; He, Wenhui; Peng, Guiming; Hod, Idan
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3046-3053
- ISSN:
- 2050-7496
- Subject:
- coordination polymers; electrodes; electrolytes; hydrogen production; photocatalysis; solar energy; surface area; titanium dioxide
- Abstract:
- ... Photo-active metal–organic frameworks (MOFs) are considered as promising materials for the study of photo-electrochemical cells (PECs). They can be utilized as porous, high surface area scaffolds for the assembly of molecular chromophores atop semiconducting electrodes. Usually, however, the lack of prominent electronic interactions between adjacent MOF-installed chromophores impedes the developme ...
- DOI:
- 10.1039/c8ta10483b
-
http://dx.doi.org/10.1039/c8ta10483b
- Author:
- Wen, Hui-Min; Liao, Caijun; Li, Libo; Alsalme, Ali; Alothman, Zeid; Krishna, Rajamani; Wu, Hui; Zhou, Wei; Hu, Jun; Chen, Banglin
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3128-3134
- ISSN:
- 2050-7496
- Subject:
- adsorbents; adsorption; carbon dioxide; coordination polymers; copper; energy; flue gas; heat; liquids; methane; neutrons; nitrogen; porosity; porous media
- Abstract:
- ... Capturing carbon dioxide (CO₂) from flue gases with porous materials has been considered as a viable alternative technology to replace traditional liquid amine adsorbents. A large number of microporous metal–organic frameworks (MOFs) have been developed as CO₂-capturing materials. However, it is challenging to target materials with both extremely high CO₂ capture capacity and gas selectivity (so-c ...
- DOI:
- 10.1039/c8ta11596f
-
http://dx.doi.org/10.1039/c8ta11596f
- Author:
- Yang, Rongrong; Sun, Lanju; Liu, Wei; Zhang, Yuan; Cui, Yongpeng; Du, Yongxiu; Liu, Shuang; Wang, Huanlei; Huang, Minghua
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3399-3407
- ISSN:
- 2050-7496
- Subject:
- anodes; batteries; electrochemistry; electrolytes; energy; nanomaterials; porosity; porous media; sodium; titanium dioxide
- Abstract:
- ... On the way to pursue advanced energy storage cells, an ingenious design and exquisite structure of electrode materials are key to success. In this work, we rationally prepared a unique mesocrystal TiO₂ hollow sphere with a mesoporous shell by employing sulfonated-squid ink as templates. This is the first mesocrystal example with a hollow and porous sphere-like scaffold, which contributes to the sy ...
- DOI:
- 10.1039/c9ta00334g
-
http://dx.doi.org/10.1039/c9ta00334g
- Author:
- Yang, Cheng; Shi, Minjie; Tian, Yuyu; Yang, Jun; Song, Xuefeng; Zhao, Liping; Liu, Jing; Zhang, Peng; Gao, Lian
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3432-3442
- ISSN:
- 2050-7496
- Subject:
- capacitance; electrochemistry; electronics; energy density; graphene; nanoparticles; nickel; pomegranates; solar energy
- Abstract:
- ... Inspired by the structure of pomegranates, an intriguing pomegranate-like microflower (PM-NiₓSy) confining core–shell binary nickel sulfide (β-NiS/Ni₃S₄) nanobeads has been constructed for the first time, which contributes to breaking through the bottleneck of poor cycle performance for nickel sulfide-based supercapacitors (SCs). The PM-NiₓSy microflowers possess an open nano–micro-structure, in w ...
- DOI:
- 10.1039/c8ta11489g
-
http://dx.doi.org/10.1039/c8ta11489g
- Author:
- Ruoko, Tero-Petri; Hiltunen, Arto; Iivonen, Tomi; Ulkuniemi, Riina; Lahtonen, Kimmo; Ali-Löytty, Harri; Mizohata, Kenichiro; Valden, Mika; Leskelä, Markku; Tkachenko, Nikolai V.
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3206-3215
- ISSN:
- 2050-7496
- Subject:
- capacitance; chemistry; dielectric spectroscopy; electric current; electric potential difference; hematite; irradiation; light; tantalum oxide
- Abstract:
- ... We employ atomic layer deposition to prepare 50 nm thick hematite photoanodes followed by passivating them with a 0.5 nm thick Ta₂O₅-overlayer and compare them with samples uniformly doped with the same amount of tantalum. We observe a three-fold improvement in photocurrent with the same onset voltage using Ta-overlayer hematite photoanodes, while electrochemical impedance spectroscopy under visib ...
- DOI:
- 10.1039/c8ta09501a
-
http://dx.doi.org/10.1039/c8ta09501a
- Author:
- Pasumarthi, Viswanath; Liu, Taifeng; Dupuis, Michel; Li, Can
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3054-3065
- ISSN:
- 2050-7496
- Subject:
- density functional theory; diffusivity; electrodes; electron transfer; electrons; energy; molybdenum; tungsten; vanadium
- Abstract:
- ... We present mesoscale characterization of carrier transport in W/Mo-doped ms-BiVO₄ (BVO) to supplement our earlier study of electron and hole transport in bulk BVO. The mesoscale kinetic Monte Carlo (KMC) approach, supported by first principles-determined electron and hole hopping rates, captures the complex dynamics of electron carriers arising from light absorption and from metal doping. The comp ...
- DOI:
- 10.1039/c8ta09899a
-
http://dx.doi.org/10.1039/c8ta09899a
- Author:
- Ma, Song; Chen, Kai; Qiu, Yun-Hang; Gong, Li-Li; Pan, Gui-Min; Lin, Yong-Jie; Hao, Zhong-Hua; Zhou, Li; Wang, Qu-Quan
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3408-3414
- ISSN:
- 2050-7496
- Subject:
- gold; information processing; nanogold; photocatalysis; photothermotherapy; semiconductors; sulfides
- Abstract:
- ... Substantial effort has been devoted to synthesizing plasmonic metal/semiconductor heteronanostructures with controlled morphology owing to their excellent performance ranging from photocatalysis to optical information processing. However, growing semiconductor heterojunctions with both counterparts in direct contact with the plasmonic metal nanostructures remains challenging. Herein, we report a t ...
- DOI:
- 10.1039/c8ta11154e
-
http://dx.doi.org/10.1039/c8ta11154e
- Author:
- Kim, Kwangnam; Siegel, Donald J.
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3216-3227
- ISSN:
- 2050-7496
- Subject:
- batteries; chemistry; electrolytes; models; potential energy; thermodynamics
- Abstract:
- ... The emergence of solid electrolytes with ionic conductivities comparable to that of liquids has improved the prospects for realizing solid-state batteries. Although a small number of ionically-conducting solids are now known, most exhibit shortcomings such as limited interfacial stability and susceptibility to dendrite penetration. Consequently, the discovery of alternative solid electrolytes rema ...
- DOI:
- 10.1039/c8ta10989c
-
http://dx.doi.org/10.1039/c8ta10989c
- Author:
- Hou, Xiaofan; Cai, Yixiao; Zhang, Dan; Li, Lv; Zhang, Xia; Zhu, Zidi; Peng, Luwei; Liu, Yuyu; Qiao, Jinli
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3197-3205
- ISSN:
- 2050-7496
- Subject:
- carbon dioxide; catalysts; copper; electrochemistry; electrodes; electrolysis; equations; formates; fuels; hydrogen; hydrogen production; mass transfer; potassium bicarbonate; renewable energy sources; surface area; tin
- Abstract:
- ... Cu-based catalysts are exceptionally advantageous for the electrochemical CO₂ reduction reaction (CO₂RR) to fuels and chemical products utilizing clean and renewable energy. However, most tend to yield a diversity of hydrocarbon products along with the H₂ evolution side reaction. We reveal how a 3D core–shell porous-structured Cu@Sn hybrid electrode can lead to an unprecedented selective CO₂ elect ...
- DOI:
- 10.1039/c8ta10650a
-
http://dx.doi.org/10.1039/c8ta10650a
- Author:
- Patra, Kshirodra Kumar; Bharad, Pradnya Arunrao; Jain, Vanshika; Gopinath, Chinnakonda S.
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3179-3189
- ISSN:
- 2050-7496
- Subject:
- alloys; electrochemistry; electrons; hydrogen; hydrogen production; leaves; resorption; spectroscopy; white light
- Abstract:
- ... Often, a disadvantage in one area of science may become an advantage in another area. In contrast, a successful concept in one area could work for a complementary area of research too. These two philosophies have been successfully used for solar hydrogen generation and they underscore the necessity to connect relevant concepts. We, herein, report a quasi-artificial leaf (QuAL) device in a wireless ...
- DOI:
- 10.1039/c8ta11307f
-
http://dx.doi.org/10.1039/c8ta11307f
- Author:
- Zhang, Xiaohua; Li, Hengxiang; Qin, Bing; Wang, Qun; Xing, Xiaohan; Yang, Donghua; Jin, Li'e; Cao, Qing
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3298-3306
- ISSN:
- 2050-7496
- Subject:
- capacitance; carbon fibers; carbonization; cellulosic fibers; electrical conductivity; electrolytes; energy density; glucose; graphene; iron; micropores; potassium hydroxide; sodium sulfate; surface area; synergism
- Abstract:
- ... Biomass-derived carbon with a high specific surface area, appropriate micropore size, and excellent electrical conductivity is desirable for supercapacitor applications. Herein, porous graphitic carbon sheets (CS) grafted on cellulose fibers (CFs) were fabricated by carbonization of glucose and CFs with the aid of a green activating–graphitizing agent K₃[Fe(C₂O₄)₃]. In addition to having a sheet-l ...
- DOI:
- 10.1039/c8ta11844b
-
http://dx.doi.org/10.1039/c8ta11844b
- Author:
- Liu, Xiaohui; Li, Xiaodong; Zou, Yang; Liu, He; Wang, Lei; Fang, Junfeng; Yang, Chuluo
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3336-3343
- ISSN:
- 2050-7496
- Subject:
- electric potential difference; electron transfer; hydrophobicity; solar cells
- Abstract:
- ... The electron transport layer (ETL) plays a significant role in advancing the high efficiency and stability of solution-processed perovskite solar cells (PVSCs). Here, three commercialized n-type non-fullerene small molecule acceptors (IT-4X) with modulated energy levels are introduced as excellent alternative ETLs to replace the commonly used fullerene-based ETL in planar inverted PVSCs. The best- ...
- DOI:
- 10.1039/c8ta12028e
-
http://dx.doi.org/10.1039/c8ta12028e
- Author:
- Sun, Zhenhe; Xu, Lingqun; Dong, Caiqiao; Zhang, Hongtao; Zhang, Mingtao; Liu, Yiyang; Zhou, Ying; Han, Yu; Chen, Yongsheng
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3375-3383
- ISSN:
- 2050-7496
- Subject:
- X-ray diffraction; anodes; boron; cathodes; chemical bonding; electric potential difference; energy density; lithium batteries; manganese; metal ions
- Abstract:
- ... Lithium-rich layered oxide (LLO) has been considered as an attractive candidate due to its high capacitive performance. However, its practical applications are hindered by voltage/capacity fading, low initial coulombic efficiency, and non-negligible Mn²⁺ dissolution. Herein, we have prepared boron-doped LLO (LLO@LBO) with excellent cycle/voltage retention and improved initial coulombic efficiency ...
- DOI:
- 10.1039/c8ta10786f
-
http://dx.doi.org/10.1039/c8ta10786f
- Author:
- Gao, Zhipeng; Xiong, Zhengwei; Li, Jun; Lu, Chengjia; Zhang, Ganghua; Zeng, Tao; Ma, Yongjun; Ma, Guohua; Zhang, Ruizhi; Chen, Kan; Zhang, Tao; Liu, Yi; Yang, Jia; Cao, Linhong; Jin, Ke
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3384-3390
- ISSN:
- 2050-7496
- Subject:
- alloys; brittleness; manganese; nanomaterials; plastic deformation; temperature; thermal conductivity
- Abstract:
- ... Minimization of the lattice thermal conductivity (κL) in thermoelectric (TE) materials is a widely applied strategy to improve the thermoelectric performance of these materials. Dislocations have been demonstrated to be effective in scattering the mid-frequency phonons, which can dramatically reduce the κL in combination with the nanostructures and point defects. Generally, plastic deformation is ...
- DOI:
- 10.1039/c8ta11292d
-
http://dx.doi.org/10.1039/c8ta11292d
- Author:
- Lin, Yu-Che; Lu, Yi-Ju; Tsao, Cheng-Si; Saeki, Akinori; Li, Jia-Xing; Chen, Chung-Hao; Wang, Hao-Cheng; Chen, Hsiu-Cheng; Meng, Dong; Wu, Kaung-Hsiung; Yang, Yang; Wei, Kung-Hwa
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3072-3082
- ISSN:
- 2050-7496
- Subject:
- artificial intelligence; chemistry; energy transfer; polymers; small-angle X-ray scattering; solar energy
- Abstract:
- ... This paper reports two new fluorine-substituted polymer donors (BO2FC8, BO2FEH), with different side-chain architectures, and a new chlorine-substituted small-molecule acceptor (m-ITIC-OR-4Cl) that are capable of simultaneous charge and energy transfer as the binary blend active layer for organic photovoltaics. We first resolved the single-crystal structure of m-ITIC-OR-4Cl and then used simultane ...
- DOI:
- 10.1039/c8ta11059j
-
http://dx.doi.org/10.1039/c8ta11059j
- Author:
- Liu, Yujing; Moser, Thierry; Andres, Christian; Gorjan, Lovro; Remhof, Arndt; Clemens, Frank; Graule, Thomas; Tiwari, Ayodhya N.; Romanyuk, Yaroslav E.
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3083-3089
- ISSN:
- 2050-7496
- Subject:
- absorption; crystallization; ethanolamine; indium; moieties; nanoparticles; tin; transmittance; wavelengths
- Abstract:
- ... Low-temperature crystallization is desired for achieving solution processable transparent conductive oxide (TCO) layers. Here we demonstrate a low-temperature crystallization of tin doped indium oxide (ITO) layers by taking preformed indium-tin hydroxide nanoparticles as the precursor and applying surface modification with ethanolamine on the as-prepared layers. Surface modification with ethanolam ...
- DOI:
- 10.1039/c8ta09891c
-
http://dx.doi.org/10.1039/c8ta09891c
- Author:
- Lin, Chieh-Ting; De Rossi, Francesca; Kim, Jinhyun; Baker, Jenny; Ngiam, Jonathan; Xu, Bob; Pont, Sebastian; Aristidou, Nicholas; Haque, Saif A.; Watson, Trystan; McLachlan, Martyn A.; Durrant, James R.
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3006-3011
- ISSN:
- 2050-7496
- Subject:
- additives; air; ammonium; carbon; electrodes; glass; lead; lighting; oxygen; photobleaching; photoluminescence; photostability; solar cells; spectroscopy
- Abstract:
- ... This study addresses the cause of enhanced stability of methyl ammonium lead iodide when processed with aminovaleric acid additives (AVA-MAPbI₃) in screen printed, hole transport layer free perovskite solar cells with carbon top electrodes (c-PSC). Employing AVA as an additive in the active layer caused a 40-fold increase in device lifetime measured under full sun illumination in ambient air (RH ∼ ...
- DOI:
- 10.1039/c8ta11985f
-
http://dx.doi.org/10.1039/c8ta11985f
- Author:
- Liu, Wenping; Wang, Chiming; Zhang, Lijie; Pan, Houhe; Liu, Wenbo; Chen, Jun; Yang, Dongjiang; Xiang, Yanjuan; Wang, Kang; Jiang, Jianzhuang; Yao, Xiangdong
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3112-3119
- ISSN:
- 2050-7496
- Subject:
- atomic force microscopy; batteries; catalysts; cobalt; electric potential difference; electrochemistry; electronics; graphene; iron; nanosheets; oxygen; polymers; positional isomers; potassium hydroxide; transmission electron microscopy
- Abstract:
- ... It is a significant challenge to develop a high-efficiency synthetic methodology to access fully conjugated 2D conjugated polymer (CP)/covalent organic framework (COF) nanosheets (NSs) that have great application potential for electronics and energy. Herein, we report the exfoliation of a series of amorphous ethynyl-linked phthalocyanine (Pc) CPs (MPc-CPs, M = Fe, Co, Fe₀.₅Co₀.₅) into ultrathin MP ...
- DOI:
- 10.1039/c8ta11044a
-
http://dx.doi.org/10.1039/c8ta11044a
- Author:
- Cai, Yingxiang; Kang, Shuangyu; Xu, Xuechun
- Source:
- Journal of materials chemistry A 2019 v.7 no.7 pp. 3426-3431
- ISSN:
- 2050-7496
- Subject:
- Raman spectroscopy; ambient temperature; density functional theory; fullerene; hardness; polymerization; semiconductors; tensile strength; thermal conductivity; thermal expansion
- Abstract:
- ... Low-dimensional carbon allotropes could be used as fundamental building blocks to bottom-up build new materials with excellent properties. In this study, a lightweight sp³-hybridized carbon allotrope named 3d-C₂₄ is suggested to be obtained by polymerizing fullerene C₂₄ molecules. By means of first-principles density functional theory (DFT) calculations, 3d-C₂₄ is confirmed to be not only dynamica ...
- DOI:
- 10.1039/c8ta11226f
-
http://dx.doi.org/10.1039/c8ta11226f