Rui Gao , Zu-Tao Pan , Zhi-Cai Wang , Ling-Bin Kong
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By discussing in detail the physical characteristics of each sample such as morphology and structure, sample elements and pore structure, high-performance carbon-based materials with Sub nanometer micropores (∼0.6 nm) and mesopores coexisted were screened, sub nanopores can shorten ion diffusion pathways and provide abundant charge storage sites. When the carbonization temperature is at 700 °C, the carbon material C-IPN700 has a microporous specific surface area of up to 1168.268 m<sup>2</sup> g<sup>−1</sup> and possesses excellent storage capacity of 358 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>, which is comparable to the optimal specific capacitance of IPNs-derived carbon materials used so far for double-decker capacitors, and after 9000 long cycle tests, the coulomb efficiency is close to 100%. C-IPN shows high energy density of 9.72 Wh Kg<sup>−1</sup> at 125 W Kg<sup>−1</sup> power density when used as a symmetric device. For the field of bilayers, C-IPN700 is a potential low-cost, easy-to-prepare low-temperature pyrolyzed carbon material with high energy storage efficiency.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"991 ","pages":"Article 119213"},"PeriodicalIF":4.1000,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nanoarchitectonics of fully interpenetrating polymers with low-temperature pyrolysis modulation for double layer capacitor\",\"authors\":\"Rui Gao , Zu-Tao Pan , Zhi-Cai Wang , Ling-Bin Kong\",\"doi\":\"10.1016/j.jelechem.2025.119213\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Carbonization temperature controllable as a key bridge between precursor structure and electrochemical performance. 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When the carbonization temperature is at 700 °C, the carbon material C-IPN700 has a microporous specific surface area of up to 1168.268 m<sup>2</sup> g<sup>−1</sup> and possesses excellent storage capacity of 358 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>, which is comparable to the optimal specific capacitance of IPNs-derived carbon materials used so far for double-decker capacitors, and after 9000 long cycle tests, the coulomb efficiency is close to 100%. C-IPN shows high energy density of 9.72 Wh Kg<sup>−1</sup> at 125 W Kg<sup>−1</sup> power density when used as a symmetric device. 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引用次数: 0
摘要
碳化温度可控是前驱体结构与电化学性能之间的关键桥梁。本工作研究了由两条分子链(邻苯二胺-甲醛/聚丙烯酸钾)构建的完全互穿聚合物网络前驱体,采用低温热解策略,系统研究了由其衍生的直接碳化温度(500-800℃)对碳材料结构演变和电化学性能的影响,并获得了一系列多孔碳基材料。通过详细讨论各样品的形貌和结构、样品元素和孔隙结构等物理特性,筛选出亚纳米微孔(~ 0.6 nm)和介孔共存的高性能碳基材料,亚纳米孔可以缩短离子扩散途径并提供丰富的电荷存储位点。当炭化温度为700℃时,碳材料C- ipn700的微孔比表面积高达1168.268 m2 g−1,在0.5 ag−1下具有358 F g−1的优异存储容量,与目前用于双层电容器的ipns衍生碳材料的最佳比电容相当,经过9000次长循环测试,库仑效率接近100%。作为对称器件使用时,C-IPN在125 W Kg−1功率密度下的能量密度高达9.72 Wh Kg−1。在双分子层领域,C-IPN700是一种有潜力的低成本、易于制备的低温热解碳材料,具有较高的储能效率。
Nanoarchitectonics of fully interpenetrating polymers with low-temperature pyrolysis modulation for double layer capacitor
Carbonization temperature controllable as a key bridge between precursor structure and electrochemical performance. This work investigates a fully interpenetrating polymer network precursor constructed with two molecular chains (o-Phenylenediamine-formaldehyde/potassium polyacrylate), a low-temperature pyrolysis strategy for systematically study the influence of direct carbonization temperature (500–800 °C) on the structural evolution and electrochemical properties of carbon materials derived from it, and obtained a series of porous carbon-based materials. By discussing in detail the physical characteristics of each sample such as morphology and structure, sample elements and pore structure, high-performance carbon-based materials with Sub nanometer micropores (∼0.6 nm) and mesopores coexisted were screened, sub nanopores can shorten ion diffusion pathways and provide abundant charge storage sites. When the carbonization temperature is at 700 °C, the carbon material C-IPN700 has a microporous specific surface area of up to 1168.268 m2 g−1 and possesses excellent storage capacity of 358 F g−1 at 0.5 A g−1, which is comparable to the optimal specific capacitance of IPNs-derived carbon materials used so far for double-decker capacitors, and after 9000 long cycle tests, the coulomb efficiency is close to 100%. C-IPN shows high energy density of 9.72 Wh Kg−1 at 125 W Kg−1 power density when used as a symmetric device. For the field of bilayers, C-IPN700 is a potential low-cost, easy-to-prepare low-temperature pyrolyzed carbon material with high energy storage efficiency.
期刊介绍:
The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied.
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