interface engineering
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2022 ◽  
pp. 2109794
Author(s):  
Yibo Zhang ◽  
Joel Y. Y. Loh ◽  
Andrew G. Flood ◽  
Chengliang Mao ◽  
Geetu Sharma ◽  
...  

2022 ◽  
Vol 14 (1) ◽  
Author(s):  
Gang Jian ◽  
Yong Jiao ◽  
Liang Feng ◽  
Qingzhen Meng ◽  
Ning Yang ◽  
...  

AbstractDielectric substances exhibit great potential for high-power capacitors due to their high stability and fast charge–discharge; however, a long-term challenge is to enhance energy density. Here, we propose a poly(vinylidene fluoride) (PVDF) composite utilizing BaTiO3 nanoparticle@TiO2 nanosheet (BT@TO ns) 2D nanohybrids as fillers, aiming at combining the interfacial strategy of using a core–shell filler and the electron scattering of a 2D filler to improve the energy density. With 4 wt% filler, the composite possesses the largest breakdown strength (Eb) of 561.2 MV m−1, which is significantly enhanced from the 407.6 MV m−1 of PVDF, and permittivity of 12.6 at 1 kHz, which is a 23% increase from that of PVDF. A superhigh energy density of 21.3 J cm−3 with an efficiency of 61% is obtained at 550 MV m−1. The 2D BT@TO ns-filled composite exhibits a higher energy density than composites filled with core–shell 1D BT@TO nws or non-core–shell 0D BT, 1D TO, or 2D TO particles. The Eb and energy density improvements are attributed to the buffer layer-based interface engineering and enhanced area scattering of electrons caused by the 2D hybrids, an effect similar to that of a ping-pong paddle to scatter electric field-induced charge migrations in composites. Thus, an effective hybrid strategy is presented for achieving high-performance polymer composites that can be used in energy storage devices.


Solar RRL ◽  
2022 ◽  
Author(s):  
Naveen Harindu Hemasiri ◽  
Laura Caliò ◽  
Meenakshi Pegu ◽  
Samrana Kazim ◽  
Shahzada Ahmad

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 190
Author(s):  
Ali Hassan ◽  
Muhammad Azam ◽  
Yeong Hwan Ahn ◽  
Muhammad Zubair ◽  
Yu Cao ◽  
...  

Organic–inorganic hybrid perovskite photodetectors are gaining much interest recently for their high performance in photodetection, due to excellent light absorption, low cost, and ease of fabrication. Lower defect density and large grain size are always favorable for efficient and stable devices. Herein, we applied the interface engineering technique for hybrid trilayer (TiO2/graphene oxide/perovskite) photodetector to attain better crystallinity and defect passivation. The graphene oxide (GO) sandwich layer has been introduced in the perovskite photodetector for improved crystallization, better charge extraction, low dark current, and enhanced carrier lifetime. Moreover, the trilayer photodetector exhibits improved device performance with a high on/off ratio of 1.3 × 104, high responsivity of 3.38 AW−1, and low dark current of 1.55 × 10−11 A. The insertion of the GO layer also suppressed the perovskite degradation process and consequently improved the device stability. The current study focuses on the significance of interface engineering to boost device performance by improving interfacial defect passivation and better carrier transport.


ACS Catalysis ◽  
2022 ◽  
pp. 1004-1011
Author(s):  
Jinlong Yin ◽  
Zeyu Gao ◽  
Fengyuan Wei ◽  
Chang Liu ◽  
Jun Gong ◽  
...  

Author(s):  
Jiaqi Ran ◽  
Jianfeng Wu ◽  
Yongfeng Hu ◽  
Mohsen Shakouri ◽  
Baorui Xia ◽  
...  

Interface engineering has been proved to be an efficient strategy for boosting electrocatalytic performance and has attracted increasing interest in past few decades. Herein, Co3O4@LaCoO3 heterojunctions with abundant oxygen vacancies,...


2022 ◽  
Author(s):  
Ruru Song ◽  
Deyu Li ◽  
Yafeng Xu ◽  
Junfeng Gao ◽  
Lu Wang ◽  
...  

MoS2 and MoSe2 are recognized as the promising electrocatalysts for hydrogen evolution reaction (HER), but the active sites are mainly located on the edge, limiting their electrochemical efficiency. Here we...


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