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      Topological materials and topologically engineered materials: properties, synthesis, and applications for energy conversion and storage

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          Abstract

          This review provides a summary of various energy-related topological materials and topologically engineered materials and explore the unique nontrivial topology properties and topological design toward their potential applications in energy fields.

          Abstract

          Topological materials have attracted intense research interest due to their nontrivial topology of band structures and their promise in applications ranging from low-power electronics to high-performance optoelectronic devices. This review provides a summary of various energy-related topological materials and topologically engineered materials that have been developed thus far and explores the unique nontrivial topological properties and topological design toward their potential application in energy conversion and storage, such as solar cells, photocatalytic and photoelectronic devices, lithium-ion batteries, and hydrogen storage. In addition, advances and critically associated issues and challenges will be discussed to stimulate broader interests in developing topological energy materials toward improvement of their applications in energy fields.

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          Most cited references147

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          Electric Field Effect in Atomically Thin Carbon Films

          We describe monocrystalline graphitic films, which are a few atoms thick but are nonetheless stable under ambient conditions, metallic, and of remarkably high quality. The films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands, and they exhibit a strong ambipolar electric field effect such that electrons and holes in concentrations up to 10 13 per square centimeter and with room-temperature mobilities of ∼10,000 square centimeters per volt-second can be induced by applying gate voltage.
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            Organometal halide perovskites as visible-light sensitizers for photovoltaic cells.

            Two organolead halide perovskite nanocrystals, CH(3)NH(3)PbBr(3) and CH(3)NH(3)PbI(3), were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells. When self-assembled on mesoporous TiO(2) films, the nanocrystalline perovskites exhibit strong band-gap absorptions as semiconductors. The CH(3)NH(3)PbI(3)-based photocell with spectral sensitivity of up to 800 nm yielded a solar energy conversion efficiency of 3.8%. The CH(3)NH(3)PbBr(3)-based cell showed a high photovoltage of 0.96 V with an external quantum conversion efficiency of 65%.
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              The chemistry and applications of metal-organic frameworks.

              Crystalline metal-organic frameworks (MOFs) are formed by reticular synthesis, which creates strong bonds between inorganic and organic units. Careful selection of MOF constituents can yield crystals of ultrahigh porosity and high thermal and chemical stability. These characteristics allow the interior of MOFs to be chemically altered for use in gas separation, gas storage, and catalysis, among other applications. The precision commonly exercised in their chemical modification and the ability to expand their metrics without changing the underlying topology have not been achieved with other solids. MOFs whose chemical composition and shape of building units can be multiply varied within a particular structure already exist and may lead to materials that offer a synergistic combination of properties.
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                Author and article information

                Contributors
                Journal
                JMCAET
                Journal of Materials Chemistry A
                J. Mater. Chem. A
                Royal Society of Chemistry (RSC)
                2050-7488
                2050-7496
                January 26 2021
                2021
                : 9
                : 3
                : 1297-1313
                Affiliations
                [1 ]School of Pharmaceutical & Materials Engineering
                [2 ]Taizhou University
                [3 ]Taizhou 318000
                [4 ]China
                [5 ]Department of Mechanical Engineering
                [6 ]University of Delaware
                [7 ]Newark
                [8 ]USA
                Article
                10.1039/D0TA11072H
                e73d762e-36d6-4061-8d5c-1740be4d8007
                © 2021

                http://rsc.li/journals-terms-of-use

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