Rhenium Diselenide Anchored on Reduced Graphene Oxide as Anode with Cyclic Stability for Potassium-Ion Battery
Publication in refereed journal

香港中文大學研究人員
替代計量分析
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其它資訊
摘要An effective route is developed to fabricate ultrathin rhenium diselenide (ReSe2) nanosheets anchored on reduced graphene oxide (rGO) nanoflakes (ReSe2@rGO). When the ReSe2@rGO is used as an anode material in the potassium-ion batteries (PIBs), the graphene offers a conductive matrix to buffer the volume alteration during repeated K+ insertion/extraction cycles. The stable interfacial connection between ReSe2 and graphene greatly promotes the integration of the active ReSe2 nanosheets, preventing their agglomeration. At the same time, these ultrathin nanosheets shorten the ion/electron diffusion path, leading to stable cyclic performance. As a result, the ReSe2@rGO anode enhances the electrochemical performance of the as-synthesized PIB with a high specific capacity of over 250 mAh g(-1) at a current density of 500 mA g(-1) even after 200 cycles. Excellent rate performance and lengthy cyclic performance with 150 mAh g(-1) at 2 A g(-1) are also observed even after 500 cycles.
著者Wu MG, Yang JL, Ng DHL, Ma JM
期刊名稱physica status solidi (RRL) - Rapid Research Letters
出版作品名稱PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
出版年份2019
月份10
卷號13
期次10
出版社WILEY-V C H VERLAG GMBH
文章號碼1900329
國際標準期刊號1862-6254
電子國際標準期刊號1862-6270
語言英式英語
關鍵詞anodes, composites, graphene, potassium-ion batteries, ReSe2
Web of Science 學科類別Materials Science, Multidisciplinary;Physics, Applied;Physics, Condensed Matter;Materials Science;Physics

上次更新時間 2021-16-01 於 23:04