Targeted design strategies for a highly activated carbon cloth cathode/anode to construct flexible and cuttable sodium Ion capacitors with an all-woven-structure†
{"title":"Targeted design strategies for a highly activated carbon cloth cathode/anode to construct flexible and cuttable sodium Ion capacitors with an all-woven-structure†","authors":"Ying-Ying Wang, Zhong-Yuan Wang, Yu-Juan Xu, Wei-Hua Chen, Guo-Sheng Shao and Bao-Hua Hou","doi":"10.1039/D4EE02578D","DOIUrl":null,"url":null,"abstract":"<p >Carbon cloth (CC) is a promising flexible substrate to construct flexible electrodes. However, commercial CC suffers from high price, large dead weight/volume and poor electrochemical activity, severely affecting the energy/power density of energy storage devices. Herein, both a porous CC (PCC) cathode and hard carbon CC (HCC) anode are rationally designed and prepared <em>via</em> targeted strategies using scalable and renewable cotton cloth. The full microporous structure of PCC ensures a complete self-supporting structure, large specific surface area and high performance based on PF<small><sub>6</sub></small><small><sup>−</sup></small>. The non-porous structure with localized graphitic nanodomains of HCC contributes efficient sodium storage comparable to that of a capacitor with better flexibility. Consequently, both the PCC cathode and HCC anode realize high reversible capacity, outstanding rate capability, and ultralong cycling life in the half/full cell of a sodium ion capacitor system. More significantly, a flexible all-cloth sodium ion capacitor is assembled using the PCC cathode, HCC anode and cotton cloth separator, which provides stable power output even under bending and cutting conditions owing to its all-woven-structure. In addition, the structural design strategy, structure–activity relationship, and charge/discharge mechanism of CC electrodes are studied in detail, providing a constructive view for developing low-cost CC-based electrodes with high energy storage activity.</p>","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":" 18","pages":" 6811-6820"},"PeriodicalIF":30.8000,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Environmental Science","FirstCategoryId":"88","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/ee/d4ee02578d","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Carbon cloth (CC) is a promising flexible substrate to construct flexible electrodes. However, commercial CC suffers from high price, large dead weight/volume and poor electrochemical activity, severely affecting the energy/power density of energy storage devices. Herein, both a porous CC (PCC) cathode and hard carbon CC (HCC) anode are rationally designed and prepared via targeted strategies using scalable and renewable cotton cloth. The full microporous structure of PCC ensures a complete self-supporting structure, large specific surface area and high performance based on PF6−. The non-porous structure with localized graphitic nanodomains of HCC contributes efficient sodium storage comparable to that of a capacitor with better flexibility. Consequently, both the PCC cathode and HCC anode realize high reversible capacity, outstanding rate capability, and ultralong cycling life in the half/full cell of a sodium ion capacitor system. More significantly, a flexible all-cloth sodium ion capacitor is assembled using the PCC cathode, HCC anode and cotton cloth separator, which provides stable power output even under bending and cutting conditions owing to its all-woven-structure. In addition, the structural design strategy, structure–activity relationship, and charge/discharge mechanism of CC electrodes are studied in detail, providing a constructive view for developing low-cost CC-based electrodes with high energy storage activity.
期刊介绍:
Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences."
Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).