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Stepwise Intercalation-Conversion-Intercalation Sodiation Mechanism in CuInS2 Prompting Sodium Storage Performance
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-11-12 , DOI: 10.1021/acsenergylett.0c02049 Dong Yan 1, 2, 3 , Shaozhuan Huang 2 , Yew Von Lim 2 , Daliang Fang 2 , Yang Shang 2 , Mei Er Pam 2 , Juezhi Yu 2 , Dongbin Xiong 1, 2 , Xue Liang Li 2 , Jian Zhang 2 , Ye Wang 4 , Likun Pan 5 , Ying Bai 6 , Yumeng Shi 1 , Hui Ying Yang 2, 3
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-11-12 , DOI: 10.1021/acsenergylett.0c02049 Dong Yan 1, 2, 3 , Shaozhuan Huang 2 , Yew Von Lim 2 , Daliang Fang 2 , Yang Shang 2 , Mei Er Pam 2 , Juezhi Yu 2 , Dongbin Xiong 1, 2 , Xue Liang Li 2 , Jian Zhang 2 , Ye Wang 4 , Likun Pan 5 , Ying Bai 6 , Yumeng Shi 1 , Hui Ying Yang 2, 3
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The low charge storage in intercalation-type reaction and the large volume change induced by conversion/alloying reactions greatly limit the practical selection of anodes in sodium-ion batteries (SIBs). Herein, CuInS2 as SIBs anode with an unusual stepwise intercalation-conversion-intercalation reaction mechanism is developed. This mechanism effectively arouses the synergies between conversion and intercalation reactions, thus alleviating the shortcomings of conventional anode materials with either low capacity or severe performance decay. Especially, unlike most of the bimetallic sulfides that usually undergo conversion/alloying dominant reactions, the indium species in CuInS2 control a reversible Na+ intercalation-extraction reaction, which can excite a stepwise and complementary reaction to stabilize performance. As a result, the CuInS2 displays better electrochemical performances as compared with the conversion-type Cu2S. This work is a milestone in the development of high-performance anodes with an appropriate working mechanism and provides significant insights for exploring appropriate anodes in alkali-ion batteries.
中文翻译：
CuInS 2的逐步插层-转化-插层复合机制促进了钠的存储性能
插层型反应中的低电荷存储量以及转化/合金化反应引起的大体积变化极大地限制了钠离子电池（SIB）中阳极的实际选择。在此，开发了具有独特的逐步插层-转化-插层反应机理的CuInS 2作为SIBs阳极。该机制有效地激发了转化反应和嵌入反应之间的协同作用，从而减轻了容量低或性能严重下降的常规负极材料的缺点。特别是，与大多数通常会进行转化/合金化显性反应的双金属硫化物不同，CuInS 2中的铟物种控制着可逆的Na +插层-萃取反应，可以激发逐步和互补反应以稳定性能。结果，与转化型Cu 2 S相比，CuInS 2表现出更好的电化学性能。这项工作是开发具有合适工作机理的高性能阳极的里程碑，并为探索碱性条件下合适的阳极提供了重要的见识。离子电池。
更新日期：2020-12-11
中文翻译：
CuInS 2的逐步插层-转化-插层复合机制促进了钠的存储性能
插层型反应中的低电荷存储量以及转化/合金化反应引起的大体积变化极大地限制了钠离子电池（SIB）中阳极的实际选择。在此，开发了具有独特的逐步插层-转化-插层反应机理的CuInS 2作为SIBs阳极。该机制有效地激发了转化反应和嵌入反应之间的协同作用，从而减轻了容量低或性能严重下降的常规负极材料的缺点。特别是，与大多数通常会进行转化/合金化显性反应的双金属硫化物不同，CuInS 2中的铟物种控制着可逆的Na +插层-萃取反应，可以激发逐步和互补反应以稳定性能。结果，与转化型Cu 2 S相比，CuInS 2表现出更好的电化学性能。这项工作是开发具有合适工作机理的高性能阳极的里程碑，并为探索碱性条件下合适的阳极提供了重要的见识。离子电池。
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