Linjie Su, Bohong Li, Dongyu Zhao, Chuanli Qin and Zheng Jin
The purpose of this paper is to prepare a new modified activated carbon fibers (ACFs) of high specific capacitance used for electrode material of supercapacitor.
Abstract
Purpose
The purpose of this paper is to prepare a new modified activated carbon fibers (ACFs) of high specific capacitance used for electrode material of supercapacitor.
Design/methodology/approach
In this study, the specific capacitance of ACF was significantly increased by using the phenolic resin microspheres and melamine as modifiers to prepare modified PAN-based activated carbon fibers (MACFs) via electrospinning, pre-oxidation and carbonization. The symmetrical supercapacitor (using MACF as electrode) and hybrid supercapacitor (using MACF and activated carbon as electrodes) were tested in term of electrochemical properties by cyclic voltammetry, AC impedance and cycle stability test.
Findings
It was found that the specific capacitance value of the modified fibers were increased to 167 Fg-1 by adding modifiers (i.e. 20 wt.% microspheres and 15 wt.% melamine) compared to that of unmodified fibers (86.17 Fg-1). Specific capacitance of modified electrode material had little degradation over 10,000 cycles. This result can be attributed to that the modifiers embedded into the fibers changed the original morphology and enhanced the specific surface area of the fibers.
Originality/value
The modified ACFs in our study had high specific surface area and significantly high specific capacitance, which can be applied as efficient and environmental absorbent, and advanced electrode material of supercapacitor.
Details
Keywords
This paper aims to examine how poetry and prose relate to each other in the context of architectural design education. While the two notions tend to be presented as distinct…
Abstract
Purpose
This paper aims to examine how poetry and prose relate to each other in the context of architectural design education. While the two notions tend to be presented as distinct opposites, this paper shows how design processes are made possible by designers moving dynamically between poetic and prosaic viewpoints.
Design/methodology/approach
The paper illustrates and supports the argument made in the paper through a series of images taken from an educational case study. The case study further shows how perceptions of poetry and prose can vary between different cultural backgrounds.
Findings
Building on the case study, the paper shows how architectural design education teaches students to establish links between poetic and prosaic realms in a dynamic and flexible manner. The discussion further provides a basis for understanding how perceptions of the prosaic and poetic can be understood as choices made by observers.
Research limitations/implications
Limitations of this paper arise from the specificity of the reported case study and its reliance on the personal experience of the author as a teacher of architectural design primarily at universities within the greater China area.
Originality/value
This paper shows how the learning to move between perceptions of poetic and prosaic is employed in architectural designing and taught in architectural education. In discussing designers' moving between perceptions of poetic and prosaic, the paper relates epistemologies of cybernetics, design, traditional Chinese thought and radical constructivism.