Junjun Chen , Junxian Xie , Charles Q. Jia , Chenying Song , Jian Hu , Hailong Li
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引用次数: 0
Abstract
The cellulose-based paper electrode has attracted increasing attention for wearable and portable electronic devices. However, the loading of expensive electroactive substances, a large proportion of cellulose matrix and the loss of mechanical flexibility limit its commercial application. This article reports a facile and economical strategy for fabricating high-performance cellulose-based activated carbon fiber papers (ACFPs), which can be used as self-supporting supercapacitor electrodes without any binder. Combining wet papermaking, thermal carbonization, and double activation, the new strategy enables the in-situ transformation of fibrillated pulp fibers into cellulose-derived activated carbon fused with carbon fibers (CFs). The resulting ACFPs are characteristic of high specific surface area (808–1106 m2/g), high conductivity (1640–1786 S/m), prominent tensile strength (4.6–6.4 MPa), and flexible processability. Furthermore, the ACFP exhibits maximum specific capacitance of 48.8F/cm3 (or 165F/g) based on the whole electrode and possesses superior cycling stability. Moreover, electroactive materials are readily loaded onto the ACFPs to enhance the capacitance further. In the ACFPs, the cellulose-derived activated carbon is primarily responsible for capacitive energy storage, while CFs serve as a highly functional network due to their low thermal expansion coefficient and high electrical conductivity. Overall, this work provides a novel strategy for manufacturing scalable, cost-effective paper-based electrode materials with broad application prospects in energy storage.
期刊介绍:
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.