{"title":"用于工业级负碳二氧化碳电解的可调 Ag-Ox 配位","authors":"","doi":"10.1016/j.nanoen.2024.110265","DOIUrl":null,"url":null,"abstract":"<div><p>The electrochemical CO<sub>2</sub> reduction (eCO<sub>2</sub>RR) is promising for eliminating CO<sub>2</sub>, generate valuable chemicals and utilize spare electricity. However, its industrialization is greatly hindered by low CO<sub>2</sub> single-pass conversion efficiency (SPCE) in alkaline/neutral electrolytes, and poor compatibility between the electrolysis and intermittent energy system. Herein, a carbon-negative acidic eCO<sub>2</sub>RR system is developed using acidic-tolerant Ag based metal-organic frameworks (Ag-MOFs), achieving a high Faradaic efficiency of CO above 97 % in a broad working window of 10–400 mA cm<sup>−2</sup> for unsaturated Ag-O2 clusters, and a high CO<sub>2</sub> SPCE of 46.3 % even under industrial-level 400 mA cm<sup>−2</sup>. Being connected to solar cells, the acidic eCO<sub>2</sub>RR system displays a remarkable solar-to-chemical efficiency of 19.74 %, offering great potential for industrial eCO<sub>2</sub>RR directly driven by renewable energy. Specifically, the CO/HCOOH selectivity could be manipulated by adjusting the coordination number of Ag atoms in Ag-MOFs, and thus a Pourbaix-diagram is proposed to explain the tunable selectivity theoretically.</p></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":null,"pages":null},"PeriodicalIF":16.8000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Tunable Ag-Ox coordination for industrial-level carbon-negative CO2 electrolysis\",\"authors\":\"\",\"doi\":\"10.1016/j.nanoen.2024.110265\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The electrochemical CO<sub>2</sub> reduction (eCO<sub>2</sub>RR) is promising for eliminating CO<sub>2</sub>, generate valuable chemicals and utilize spare electricity. However, its industrialization is greatly hindered by low CO<sub>2</sub> single-pass conversion efficiency (SPCE) in alkaline/neutral electrolytes, and poor compatibility between the electrolysis and intermittent energy system. Herein, a carbon-negative acidic eCO<sub>2</sub>RR system is developed using acidic-tolerant Ag based metal-organic frameworks (Ag-MOFs), achieving a high Faradaic efficiency of CO above 97 % in a broad working window of 10–400 mA cm<sup>−2</sup> for unsaturated Ag-O2 clusters, and a high CO<sub>2</sub> SPCE of 46.3 % even under industrial-level 400 mA cm<sup>−2</sup>. Being connected to solar cells, the acidic eCO<sub>2</sub>RR system displays a remarkable solar-to-chemical efficiency of 19.74 %, offering great potential for industrial eCO<sub>2</sub>RR directly driven by renewable energy. Specifically, the CO/HCOOH selectivity could be manipulated by adjusting the coordination number of Ag atoms in Ag-MOFs, and thus a Pourbaix-diagram is proposed to explain the tunable selectivity theoretically.</p></div>\",\"PeriodicalId\":394,\"journal\":{\"name\":\"Nano Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.8000,\"publicationDate\":\"2024-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nano Energy\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2211285524010176\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Energy","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2211285524010176","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Tunable Ag-Ox coordination for industrial-level carbon-negative CO2 electrolysis
The electrochemical CO2 reduction (eCO2RR) is promising for eliminating CO2, generate valuable chemicals and utilize spare electricity. However, its industrialization is greatly hindered by low CO2 single-pass conversion efficiency (SPCE) in alkaline/neutral electrolytes, and poor compatibility between the electrolysis and intermittent energy system. Herein, a carbon-negative acidic eCO2RR system is developed using acidic-tolerant Ag based metal-organic frameworks (Ag-MOFs), achieving a high Faradaic efficiency of CO above 97 % in a broad working window of 10–400 mA cm−2 for unsaturated Ag-O2 clusters, and a high CO2 SPCE of 46.3 % even under industrial-level 400 mA cm−2. Being connected to solar cells, the acidic eCO2RR system displays a remarkable solar-to-chemical efficiency of 19.74 %, offering great potential for industrial eCO2RR directly driven by renewable energy. Specifically, the CO/HCOOH selectivity could be manipulated by adjusting the coordination number of Ag atoms in Ag-MOFs, and thus a Pourbaix-diagram is proposed to explain the tunable selectivity theoretically.
期刊介绍:
Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem.
Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.