Sulfur-doped iron-cobalt tannate nanorods(S-FeCoTA)derived from metal-organic frameworks(MOFs)as electrocatalysts were synthesized via a one-step hydrothermal method.The optimized S-FeCoTA was interlaced by loose nano...Sulfur-doped iron-cobalt tannate nanorods(S-FeCoTA)derived from metal-organic frameworks(MOFs)as electrocatalysts were synthesized via a one-step hydrothermal method.The optimized S-FeCoTA was interlaced by loose nanorods,which had many voids.The S-FeCoTA catalysts exhibited excellent electrochemical oxygen evolution reaction(OER)performance with a low overpotential of 273 mV at 10 mA·cm^(-2)and a small Tafel slope of 36 mV·dec^(-1)in 1 mol·L^(-1)KOH.The potential remained at 1.48 V(vs RHE)at 10 mA·cm^(-2)under continuous testing for 15 h,implying that S-FeCoTA had good stability.The Faraday efficiency of S-FeCoTA was 94%.The outstanding OER activity of S-FeCoTA is attributed to the synergistic effects among S,Fe,and Co,thus promoting electron transfer,reducing the reaction kinetic barrier,and enhancing the OER performance.展开更多
钻井作为油气勘探开发的核心环节之一,随着大数据、人工智能技术在钻井领域的深入应用,智能钻井技术不断取得突破。以德温特创新索引国际专利数据库(DII)为数据来源,利用Derwent Data Analyzer(DDA)、Derwent Innovation(DI)等专利分析...钻井作为油气勘探开发的核心环节之一,随着大数据、人工智能技术在钻井领域的深入应用,智能钻井技术不断取得突破。以德温特创新索引国际专利数据库(DII)为数据来源,利用Derwent Data Analyzer(DDA)、Derwent Innovation(DI)等专利分析工具和平台,对智能钻井领域的专利申请进行了系统分析。结果表明,智能钻井领域专利申请主要集中在中国、美国和加拿大,但美国核心专利数量占据绝对优势。主要研发机构包括中国石油、中国石化、中海油、西南石油大学、哈里伯顿能源服务公司等。技术布局主要集中在利用旋转钻井、测试操作和设备、海洋钻井结构和设备、其他钻井方法和设备、钻井液、打捞和回收工具、缆索钻井等。展开更多
文摘Sulfur-doped iron-cobalt tannate nanorods(S-FeCoTA)derived from metal-organic frameworks(MOFs)as electrocatalysts were synthesized via a one-step hydrothermal method.The optimized S-FeCoTA was interlaced by loose nanorods,which had many voids.The S-FeCoTA catalysts exhibited excellent electrochemical oxygen evolution reaction(OER)performance with a low overpotential of 273 mV at 10 mA·cm^(-2)and a small Tafel slope of 36 mV·dec^(-1)in 1 mol·L^(-1)KOH.The potential remained at 1.48 V(vs RHE)at 10 mA·cm^(-2)under continuous testing for 15 h,implying that S-FeCoTA had good stability.The Faraday efficiency of S-FeCoTA was 94%.The outstanding OER activity of S-FeCoTA is attributed to the synergistic effects among S,Fe,and Co,thus promoting electron transfer,reducing the reaction kinetic barrier,and enhancing the OER performance.
文摘钻井作为油气勘探开发的核心环节之一,随着大数据、人工智能技术在钻井领域的深入应用,智能钻井技术不断取得突破。以德温特创新索引国际专利数据库(DII)为数据来源,利用Derwent Data Analyzer(DDA)、Derwent Innovation(DI)等专利分析工具和平台,对智能钻井领域的专利申请进行了系统分析。结果表明,智能钻井领域专利申请主要集中在中国、美国和加拿大,但美国核心专利数量占据绝对优势。主要研发机构包括中国石油、中国石化、中海油、西南石油大学、哈里伯顿能源服务公司等。技术布局主要集中在利用旋转钻井、测试操作和设备、海洋钻井结构和设备、其他钻井方法和设备、钻井液、打捞和回收工具、缆索钻井等。
