ORCID Profile
0000-0003-3337-0158
Current Organisation
Shandong University
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Publisher: Elsevier BV
Date: 11-2019
Publisher: Springer Science and Business Media LLC
Date: 12-08-2019
Publisher: American Chemical Society (ACS)
Date: 06-08-2020
Publisher: Elsevier BV
Date: 05-2016
Publisher: Informa UK Limited
Date: 26-12-2021
Publisher: Springer Science and Business Media LLC
Date: 21-11-2019
DOI: 10.1038/S41598-019-53869-W
Abstract: It is generally acknowledged that the activation method and component of the precursor are of great importance for making porous carbon. In this study, four plant materials belong to one genus were selected as optimized plant material to produce hierarchical porous carbon for supercapacitors, the influence of initial structure was discussed. All the produced porous carbons have large specific surface area (higher than 2342 m 2 g −1 ), high microporosity (more than 57%), and high pore volume (larger than 1.32 cm 3 g −1 ). All the s les show characteristic of electrical double layer capacitance, and the onion-based porous carbon obtain highest specific capacitance of 568 F g −1 at the current density of 0.1 A g −1 . With the current density rising from 1 A g −1 to 50 A g −1 , the specific capacitance only decreases for 20%. After 5000 cycles, all the s les show relatively high capacitance retention (up to 97%). Two-step acid pickling has washed most impurities and directly lead to small equivalent series resistance (lower than 0.2 Ω). The s les show high power density and energy density (71 W h kg −1 @180 W kg −1 , 210 kW kg −1 @33 W h kg −1 ). This study open an avenue to create high-performance hierarchical porous carbon based on plant architecture.
Publisher: Elsevier BV
Date: 07-2017
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 06-2018
Publisher: Springer Science and Business Media LLC
Date: 08-10-2019
Publisher: MDPI AG
Date: 06-05-2021
DOI: 10.3390/EN14092655
Abstract: The influence of the briquetting process on SO2 and NO release characteristics, combustion properties and kinetic characteristics during biomass combustion was investigated. Two biomass (Wheat straw and Tree bulk) and two obtained briquettes were analysed. The briquetting process helps to prevent the release of SO2 and NO. The experimental results show that once the biomass is made into a briquette, when the reaction temperature is 900 ∘C, the sulphur release ratio for TB was reduced from 34.7% to 4.3% and for WS was reduced from 12.4% to 1.6%. When the reaction temperature increases to 1000 ∘C, the sulphur release ratio for TB was reduced from 73.4% to 30.4%, for WS it was reduced from 58.4% to 10.2%. SEM micrographs show that the compact structure of the TB-Briquette and WS-Briquette reduce the rate of SO2 and NO release during combustion. The thermogravimetry confirmed that the combustion performance of WS-Briquette is the best, while the TB-Briquette is the worst. According to the Coats-Redfern method, the fitting was performed at segments of 250 ∘C to 550 ∘C, and the correlation coefficient of the fitting degree was above 0.99. The effective collision rate of WS-Briquette is much higher than that of other briquettes. Compared to BR-1 and BR-2, trying to mix TB with WS to make a compound biomass briquette can enhance the combustion performance of TB-Briquette. The results may guide the upgrading of biomass briquettes technology and benefit the efficient application of biomass briquettes.
Publisher: Informa UK Limited
Date: 25-11-2022
Publisher: Informa UK Limited
Date: 12-01-2022
No related grants have been discovered for Kuihua Han.