{"title":"以生态友好的方式制备镍钴酸盐作为可持续储能设备的电极材料","authors":"","doi":"10.1016/j.electacta.2024.144656","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, urchin and tremella-like NiCo<sub>2</sub>O<sub>4</sub> was synthesised by adopting a facile hydrothermal method using green solvents (water and ethanol). Using different ratios and pure forms of green solvents has a direct impact on materials synthesised. Ethanol based NiCo<sub>2</sub>O<sub>4</sub> (NCO-E) illustrated tremella like microspheres with a specific surface area of 260.8 m<sup>2</sup> g<sup>−1</sup>. The electrochemical performance confirmed that the NCO-E has a maximum specific capacitance of 2271 F g<sup>−1</sup> at a current density of 1 A g<sup>−1</sup>. Further, as-fabricated NCO-E//AC-ASC device delivers a <em>C</em><sub>s</sub> value of 96.6 F g<sup>−1</sup> at 1 A g<sup>−1</sup> and a cyclic stability of 99.68 % over 5000 cycles. The device exhibited a high energy density of 30.19 Wh kg<sup>−1</sup> at a power density of 749.48 W kg<sup>−1</sup> and a high power density of 7542.61 W kg<sup>−1</sup> at energy density 18.43 Wh kg<sup>−1</sup> owing to the working electrode's effective electrochemical usage and excellent ion transfer mechanism.</p></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":5.5000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Eco-friendly preparation of nickel cobaltite as an electrode material in sustainable energy storage devices\",\"authors\":\"\",\"doi\":\"10.1016/j.electacta.2024.144656\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, urchin and tremella-like NiCo<sub>2</sub>O<sub>4</sub> was synthesised by adopting a facile hydrothermal method using green solvents (water and ethanol). Using different ratios and pure forms of green solvents has a direct impact on materials synthesised. Ethanol based NiCo<sub>2</sub>O<sub>4</sub> (NCO-E) illustrated tremella like microspheres with a specific surface area of 260.8 m<sup>2</sup> g<sup>−1</sup>. The electrochemical performance confirmed that the NCO-E has a maximum specific capacitance of 2271 F g<sup>−1</sup> at a current density of 1 A g<sup>−1</sup>. Further, as-fabricated NCO-E//AC-ASC device delivers a <em>C</em><sub>s</sub> value of 96.6 F g<sup>−1</sup> at 1 A g<sup>−1</sup> and a cyclic stability of 99.68 % over 5000 cycles. The device exhibited a high energy density of 30.19 Wh kg<sup>−1</sup> at a power density of 749.48 W kg<sup>−1</sup> and a high power density of 7542.61 W kg<sup>−1</sup> at energy density 18.43 Wh kg<sup>−1</sup> owing to the working electrode's effective electrochemical usage and excellent ion transfer mechanism.</p></div>\",\"PeriodicalId\":305,\"journal\":{\"name\":\"Electrochimica Acta\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2024-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrochimica Acta\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S001346862400896X\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ELECTROCHEMISTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochimica Acta","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S001346862400896X","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0
摘要
本研究利用绿色溶剂(水和乙醇),采用简便的水热法合成了海胆状和透闪石状 NiCo2O4。使用不同比例和纯度的绿色溶剂对合成材料有直接影响。乙醇基镍钴氧化物(NCO-E)呈现出类似透闪石的微球,比表面积为 260.8 m2 g-1。电化学性能证实,在电流密度为 1 A g-1 时,NCO-E 的最大比电容为 2271 F g-1。此外,制备的 NCO-E//AC-ASC 器件在 1 A g-1 电流密度下的 Cs 值为 96.6 F g-1,在 5000 次循环中的循环稳定性为 99.68%。由于工作电极的有效电化学利用和出色的离子转移机制,该装置在功率密度为 749.48 W kg-1 时显示出 30.19 Wh kg-1 的高能量密度,在能量密度为 18.43 Wh kg-1 时显示出 7542.61 W kg-1 的高功率密度。
Eco-friendly preparation of nickel cobaltite as an electrode material in sustainable energy storage devices
In this study, urchin and tremella-like NiCo2O4 was synthesised by adopting a facile hydrothermal method using green solvents (water and ethanol). Using different ratios and pure forms of green solvents has a direct impact on materials synthesised. Ethanol based NiCo2O4 (NCO-E) illustrated tremella like microspheres with a specific surface area of 260.8 m2 g−1. The electrochemical performance confirmed that the NCO-E has a maximum specific capacitance of 2271 F g−1 at a current density of 1 A g−1. Further, as-fabricated NCO-E//AC-ASC device delivers a Cs value of 96.6 F g−1 at 1 A g−1 and a cyclic stability of 99.68 % over 5000 cycles. The device exhibited a high energy density of 30.19 Wh kg−1 at a power density of 749.48 W kg−1 and a high power density of 7542.61 W kg−1 at energy density 18.43 Wh kg−1 owing to the working electrode's effective electrochemical usage and excellent ion transfer mechanism.
期刊介绍:
Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.