A most recent exciting research result in the area of solid-state batteries that has been accepted for publication by the journal Nature Energy is highlighted.The research designed a new type of inorganic solid electr...A most recent exciting research result in the area of solid-state batteries that has been accepted for publication by the journal Nature Energy is highlighted.The research designed a new type of inorganic solid electrolyte named“viscoelastic inorganic glass(VIGLAS)”electrolyte with the compositions of LiAlCl_(2.5)O_(0.75)and NaAlCl_(2.5)O_(0.75).The newly developed solid electrolyte material showcases an excep-tional degree of deformability at room temperature,high ionic conductivity(>1 mS/cm at room tem-perature)and high oxidation stability(up to 4.3 V vs.Li^(+)/Li or Na^(+)/Na).Using it as a catholyte enables a facile fabrication and a stable operation under practical stack pressure(<0.1 MPa)of all-solid-state batteries.VIGLAS represents a new path in the design of promising solid electrolytes for realizing high performance all-solid-state batteries.展开更多
Inorganic glass is a non-crystalline material that lacks of a regular,periodic atomic or molecular structure,and are considered as frozen liquids because of the similarity between their static amorphous structures.The...Inorganic glass is a non-crystalline material that lacks of a regular,periodic atomic or molecular structure,and are considered as frozen liquids because of the similarity between their static amorphous structures.The atoms and molecules in the glass can gradually rearrange and realign with time,giving rise to deformation or aging in most glass materials.However,viscoelastic behavior could not be readily observable at room temperature(RT)due to its long time scale.The paper introduce and comment a recent work published in Nature Energy,which discover a new class of viscoelastic inorganic glass with Tg well below RT.The VIGLAS is simply synthesized through adding high content of oxygen into tetrachloroaluminates to replace chlorine.The VIGLAS exhibits characteristics similar to both inorganic ceramics and organic polymers,which are particularly relevant in the realm of battery electrolytes where a balance between ionic conductivity and chemo-mechanical compatibility is crucial.展开更多
Advances in developing high entropy alloys and ceramics with improved physical properties have greatly broadened their application field from aerospace industry,public transportation to nuclear plants.In this review,w...Advances in developing high entropy alloys and ceramics with improved physical properties have greatly broadened their application field from aerospace industry,public transportation to nuclear plants.In this review,we describe the concept of entropy engineering as applicable to inorganic non-metallic glasses,especially for tailoring and enhancing their mechanical,electrical,and optical properties.We also present opportunities and challenges in calculating entropy of inorganic non-metallic glass systems,correlating entropy to glass formation,and in developing functional inorganic non-metallic glasses via the entropy concept.展开更多
Three different precursors of boron-aqua and glycerol solutions of boric acid and ethanol solution of trimethyl borate were used for the preparation of organic–inorganic advanced materials. The films and bulk materia...Three different precursors of boron-aqua and glycerol solutions of boric acid and ethanol solution of trimethyl borate were used for the preparation of organic–inorganic advanced materials. The films and bulk materials samples were heat treated at 100, 400, 800？C for 2 h. The hybrid samples were stable and transparent until 100？C. The further increase of temperature to 400？C led to destruction of samples, and at 800？C they were molten. The structural changes during the pyrolysis were studied by Fourier transform infrared spectroscopy, differential thermal analysis, and X-ray diffraction. Details of surface morphology were observed by scanning electron microscopy. The obtained BO_3 and BO_4 groups were identified in the molten materials after pyrolysis. The quantities and order of borate structural units as well as residual carbon in the networks depended on boron precursor type. PVA/PEG/B_2O_3 hybrid materials were proved to be appropriate precursors for synthesizing borate and carboborate glass and carbon/borate glass nanocomposites. To access the impact of the experimental conditions on the structural changes of the nanocomposites, cluster analysis of the IR-spectral data was used as a classification method.展开更多
基金supported by the National Natural Science Foundation of China(04130200423).
文摘A most recent exciting research result in the area of solid-state batteries that has been accepted for publication by the journal Nature Energy is highlighted.The research designed a new type of inorganic solid electrolyte named“viscoelastic inorganic glass(VIGLAS)”electrolyte with the compositions of LiAlCl_(2.5)O_(0.75)and NaAlCl_(2.5)O_(0.75).The newly developed solid electrolyte material showcases an excep-tional degree of deformability at room temperature,high ionic conductivity(>1 mS/cm at room tem-perature)and high oxidation stability(up to 4.3 V vs.Li^(+)/Li or Na^(+)/Na).Using it as a catholyte enables a facile fabrication and a stable operation under practical stack pressure(<0.1 MPa)of all-solid-state batteries.VIGLAS represents a new path in the design of promising solid electrolytes for realizing high performance all-solid-state batteries.
文摘Inorganic glass is a non-crystalline material that lacks of a regular,periodic atomic or molecular structure,and are considered as frozen liquids because of the similarity between their static amorphous structures.The atoms and molecules in the glass can gradually rearrange and realign with time,giving rise to deformation or aging in most glass materials.However,viscoelastic behavior could not be readily observable at room temperature(RT)due to its long time scale.The paper introduce and comment a recent work published in Nature Energy,which discover a new class of viscoelastic inorganic glass with Tg well below RT.The VIGLAS is simply synthesized through adding high content of oxygen into tetrachloroaluminates to replace chlorine.The VIGLAS exhibits characteristics similar to both inorganic ceramics and organic polymers,which are particularly relevant in the realm of battery electrolytes where a balance between ionic conductivity and chemo-mechanical compatibility is crucial.
基金financial support from the National Key Research and Development Program of China(Grant No.2020YFB1805901)the National Science Fund for Distinguished Young Scholars(Grant No.62125502)+5 种基金the National Natural Science Foundation of China(Grant No.51972113)the Key Program of Guangzhou Scientific Research Special Project(Grant No.201904020013)the Key Research and Development Program of Guangzhou(Grant No.202007020003)the Science and Technology Project of Guangdong Province(Grant No.2021A0505030004)the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program(Grant No.2017BT01×137)the Fundamental Research Funds for the Central University.
文摘Advances in developing high entropy alloys and ceramics with improved physical properties have greatly broadened their application field from aerospace industry,public transportation to nuclear plants.In this review,we describe the concept of entropy engineering as applicable to inorganic non-metallic glasses,especially for tailoring and enhancing their mechanical,electrical,and optical properties.We also present opportunities and challenges in calculating entropy of inorganic non-metallic glass systems,correlating entropy to glass formation,and in developing functional inorganic non-metallic glasses via the entropy concept.
基金supported by the Spanish Ministry of Education and Science (Project CTM2012-39183)the Generalitat de Catalunya (Grup Consolidat 2014SGR1017)support of H2020 program of the European Union (project Materials Networking)
文摘Three different precursors of boron-aqua and glycerol solutions of boric acid and ethanol solution of trimethyl borate were used for the preparation of organic–inorganic advanced materials. The films and bulk materials samples were heat treated at 100, 400, 800？C for 2 h. The hybrid samples were stable and transparent until 100？C. The further increase of temperature to 400？C led to destruction of samples, and at 800？C they were molten. The structural changes during the pyrolysis were studied by Fourier transform infrared spectroscopy, differential thermal analysis, and X-ray diffraction. Details of surface morphology were observed by scanning electron microscopy. The obtained BO_3 and BO_4 groups were identified in the molten materials after pyrolysis. The quantities and order of borate structural units as well as residual carbon in the networks depended on boron precursor type. PVA/PEG/B_2O_3 hybrid materials were proved to be appropriate precursors for synthesizing borate and carboborate glass and carbon/borate glass nanocomposites. To access the impact of the experimental conditions on the structural changes of the nanocomposites, cluster analysis of the IR-spectral data was used as a classification method.
