Chemically activated fungi-based porous carbons for hydrogen storage |
| |
| Affiliation: | 1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Shanghai 200050, PR China;2. Department of Inorganic Chemistry, Dresden University of Technology, Bergstraße 66, 01069 Dresden, Germany;1. Facultad de Ciencias, Grupo de Investigación en Sólidos Porosos y Calorimetría, Universidad de los Andes, Bogotá, Colombia;2. Facultad de Ciencias, Departamento de Química, Universidad Nacional de Colombia, Colombia;1. Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;2. School of Automotive Studies, Tongji University, Shanghai 201804, China;3. School of Materials Science and Technology, Tongji University, Shanghai 201804, China;4. Research & Development Center, General Motors, MI 48265-3300, United States;1. Institut Jean Lamour, UMR CNRS - Université de Lorraine n°7198, ENSTIB, 27 Rue Philippe Séguin, CS 60036, 88026 Épinal cedex, France;2. Department of Renewable Energies and Environmental Protection, Centro de Investigacion en Materiales Avanzados (CIMAV S.C.), Chihuahua, Chih, Mexico;3. Graduate Department, Facultad de Ciencias Qu?micas, Universidad Autonoma de Chihuahua (UACH), Chihuahua, Chih, Mexico;4. Instituto de Carboquímica (ICB-CSIC), Miguel Luesma Castán, 4, Zaragoza, E-50018, Spain;1. Dip. Chimica, Università degli Studi di Milano, INSTM Unit Milano-Università and ISTM-CNR, via Golgi 19, 20133 Milan, Italy;2. Dip. di Ingegneria Civile, Chimica e Ambientale, Università degli Studi di Genova and INSTM Unit Genova, P.le J.F. Kennedy 1, I-16129 Genoa, Italy;3. Dept. of Chemical Engineering, University of California at Santa Barbara, ESB 3411, Santa Barbara, CA, USA;4. Dip. di Fisica e Geologia, Università degli Studi di Perugia, Via Pascoli, 06123 Perugia, Italy |
| |
| Abstract: | A set of porous carbons has been prepared by chemical activation of various fungi-based chars with KOH. The resulting carbon materials have high surface areas (1600–2500 m2/g) and pore volumes (0.80–1.56 cm3/g), regardless of the char precursors. The porosities mainly derived from micropores in activated carbons strongly depend on the activation parameters (temperature and KOH amount). All activated carbons have uniform micropores with pore size of 0.8–0.9 nm, but some have a second set of micropores (1.3–1.4 nm pore size), further broadened to 1.9–2.1 nm as a result of increasing either the activation temperature to 750 °C or KOH/char mass ratio to 5/1. These fungi-based porous carbons achieve an excellent H2 uptake of up to 2.4 wt% at 1 bar and ?196 °C, being in agreement with results from other porous carbonaceous adsorbents reported in the literature. At high pressure (ca. 35 bar), the saturated H2 uptake reaches 4.2–4.7 wt% at ?196 °C for these fungi-based porous carbons. The results imply a great potential of these fungi-based porous carbons as H2 on-board storage media. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
