Substitution of A-site and/or X-site ions of ABX -type perovskites with organic groups can give rise to hybrid perovskites, many of which display intriguing properties beyond their parent compounds. However, this method cannot be extended effectively to hybrid antiperovskites. Now, the design of hybrid antiperovskites under the guidance of the concept of Goldschmidt's tolerance factor is presented. Spherical anions were chosen for the A and B sites and spherical organic cations for the X site, and seven hybrid antiperovskites were obtained, including (F (H O) )(AlF )(H dabco) , ((Co(CN) )(H O) )(MF )(H dabco) (M=Al , Cr , or In ), (Co(CN) )(MF )(H pip) (M=Al or Cr ), and (SbI )(AlF )(H dabco) . These new structures reveal that all ions at A, B, and X sites of inorganic antiperovskites can be replaced by molecular ions to form hybrid antiperovskites. This work will lead to the synthesis of a large family of hybrid antiperovskites.
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http://dx.doi.org/10.1002/anie.201908945 | DOI Listing |
In this paper, we use density functional theory (DFT) using full-potential linearized augmented plan wave plus local orbital method (FP-LAPW + lo). The structural, electronic, optical, photocatalytic, mechanical, vibrational, and thermodynamical behaviors of new double antiperovskite (DAP) CsAgBiX (X = Cl, Br, I) were studied. The band structure was calculated with and without spin orbit coupling (SOC).
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October 2024
Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan, 411105, P. R. China.
To explore novel electrode materials with in-depth elucidation of initial coulombic efficiency (ICE), kinetics, and charge storage mechanisms is of great challenge for Na-ion storage. Herein, a novel 3D antiperovskite carbide NiZnC@rGO anode coupled with ether-based electrolyte is reported for fast Na-ion storage, exhibiting superior performance than ester-based electrolyte. Electrochemical tests and density functional theory (DFT) calculations show that NiZnC@rGO anode with ether-based electrolyte can promote charge/ion transport and lower Na diffusion energy barrier, thereby improving ICE, reversible capacity, rate, and cycling performance.
View Article and Find Full Text PDFPhys Chem Chem Phys
October 2023
Laboratory for Chemical Computation and Modeling, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Vietnam.
The transition from fossil fuels to cleaner energies employing different renewable sources constitutes one of the primary worldwide challenges. The search for appropriate solutions is becoming more urgent in view of the severe consequences of climate change. As for a perspective, stationary energy storage, alkali-ion batteries and hybrid supercapacitors are, among others, considered as efficient and affordable solutions.
View Article and Find Full Text PDFPhys Chem Chem Phys
April 2023
Department of Materials Science and Engineering, Incheon National University, Incheon 22012, Korea.
We present a theoretical investigation on intrinsic defects of hexagonal antiperovskite BaSbN, a promising lead-free semiconductor for photovoltaics. Our hybrid functional calculations reveal that Ba, Sb and N vacancies, and N interstitials become major point defects in BaSbN. Conversely, other interstitials and antisites have large formation energies and their concentrations are controllable.
View Article and Find Full Text PDFInorg Chem
February 2023
School of Advanced Materials, and Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore560064, India.
In the world of semiconductors, organic-inorganic hybrid (OIH) halide perovskite is a new paradigm. Recently, a zealous effort has been made to design new lead-free perovskite-like OIH halides, such as perovskitoids and antiperovskites, for optoelectronic applications. In this context, we have synthesized a perovskitoid compound (Piperidinium)MnCl (compound ) crystallizing in an orthorhombic structure with infinite one-dimensional (1D) chains of MnCl octahedra.
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