{"title":"制备用于增强氢气进化反应的 Cu(OH)2/Cu2S 阵列","authors":"Xiangchao Xu, Fen Qiao, Yanzhen Liu, Wenjie Liu","doi":"10.1002/bte2.20230060","DOIUrl":null,"url":null,"abstract":"<p>Cu(OH)<sub>2</sub> has the advantages of ease of structural regulation, good conductivity, and relatively low cost, making it a suitable candidate material for use as an electrocatalyst. However, its catalytic efficiency and stability still need to be improved further. Therefore, Cu(OH)<sub>2</sub>/Cu<sub>2</sub>S was successfully prepared on copper foam (CF) using the in situ growth and hydrothermal method. The structural characterization showed that sulfidation treatment induced transformation of Cu(OH)<sub>2</sub>/CF from smooth nanorods into a coral-like structure, which exposed more active sites of Cu(OH)<sub>2</sub>/Cu<sub>2</sub>S and enhanced the performance of electrocatalytic hydrogen evolution reaction (HER). Compared with Cu(OH)<sub>2</sub>, Cu(OH)<sub>2</sub>/Cu<sub>2</sub>S showed better alkaline HER performance, especially when the vulcanization concentration was 0.1 M, the overpotential of Cu(OH)<sub>2</sub>/Cu<sub>2</sub>S was 174 mV, and the reaction kinetics was 64 mv dec<sup>−1</sup> at a current density of 10 mA cm<sup>−2</sup>. In this work, the morphology and electronic structure of copper-based metal sulfide electrocatalysts were adjusted by sulfide treatment, which provided a new reference for improving HER performance.</p>","PeriodicalId":8807,"journal":{"name":"Battery Energy","volume":"3 3","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bte2.20230060","citationCount":"0","resultStr":"{\"title\":\"Preparation of Cu(OH)2/Cu2S arrays for enhanced hydrogen evolution reaction\",\"authors\":\"Xiangchao Xu, Fen Qiao, Yanzhen Liu, Wenjie Liu\",\"doi\":\"10.1002/bte2.20230060\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Cu(OH)<sub>2</sub> has the advantages of ease of structural regulation, good conductivity, and relatively low cost, making it a suitable candidate material for use as an electrocatalyst. However, its catalytic efficiency and stability still need to be improved further. Therefore, Cu(OH)<sub>2</sub>/Cu<sub>2</sub>S was successfully prepared on copper foam (CF) using the in situ growth and hydrothermal method. The structural characterization showed that sulfidation treatment induced transformation of Cu(OH)<sub>2</sub>/CF from smooth nanorods into a coral-like structure, which exposed more active sites of Cu(OH)<sub>2</sub>/Cu<sub>2</sub>S and enhanced the performance of electrocatalytic hydrogen evolution reaction (HER). Compared with Cu(OH)<sub>2</sub>, Cu(OH)<sub>2</sub>/Cu<sub>2</sub>S showed better alkaline HER performance, especially when the vulcanization concentration was 0.1 M, the overpotential of Cu(OH)<sub>2</sub>/Cu<sub>2</sub>S was 174 mV, and the reaction kinetics was 64 mv dec<sup>−1</sup> at a current density of 10 mA cm<sup>−2</sup>. In this work, the morphology and electronic structure of copper-based metal sulfide electrocatalysts were adjusted by sulfide treatment, which provided a new reference for improving HER performance.</p>\",\"PeriodicalId\":8807,\"journal\":{\"name\":\"Battery Energy\",\"volume\":\"3 3\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-01-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bte2.20230060\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Battery Energy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/bte2.20230060\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Battery Energy","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/bte2.20230060","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
Cu(OH)2具有结构易于调节、导电性好、成本相对较低等优点，是一种适合用作电催化剂的候选材料。然而，其催化效率和稳定性仍有待进一步提高。因此，采用原位生长和水热法在泡沫铜（CF）上成功制备了 Cu(OH)2/Cu2S。结构表征结果表明，硫化处理诱导 Cu(OH)2/CF 从光滑的纳米棒转变为珊瑚状结构，从而暴露出 Cu(OH)2/Cu2S 更多的活性位点，提高了电催化氢进化反应（HER）的性能。与 Cu(OH)2 相比，Cu(OH)2/Cu2S 表现出更好的碱性 HER 性能，特别是当硫化浓度为 0.1 M 时，Cu(OH)2/Cu2S 的过电位为 174 mV，在电流密度为 10 mA cm-2 时，反应动力学为 64 mv dec-1。该研究通过硫化物处理调整了铜基金属硫化物电催化剂的形貌和电子结构，为提高 HER 性能提供了新的参考。
Preparation of Cu(OH)2/Cu2S arrays for enhanced hydrogen evolution reaction
Cu(OH)2 has the advantages of ease of structural regulation, good conductivity, and relatively low cost, making it a suitable candidate material for use as an electrocatalyst. However, its catalytic efficiency and stability still need to be improved further. Therefore, Cu(OH)2/Cu2S was successfully prepared on copper foam (CF) using the in situ growth and hydrothermal method. The structural characterization showed that sulfidation treatment induced transformation of Cu(OH)2/CF from smooth nanorods into a coral-like structure, which exposed more active sites of Cu(OH)2/Cu2S and enhanced the performance of electrocatalytic hydrogen evolution reaction (HER). Compared with Cu(OH)2, Cu(OH)2/Cu2S showed better alkaline HER performance, especially when the vulcanization concentration was 0.1 M, the overpotential of Cu(OH)2/Cu2S was 174 mV, and the reaction kinetics was 64 mv dec−1 at a current density of 10 mA cm−2. In this work, the morphology and electronic structure of copper-based metal sulfide electrocatalysts were adjusted by sulfide treatment, which provided a new reference for improving HER performance.
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