Conversion of N-doped biochar from carotenoid-extracted Tetraselmis suecica and its application to produce supercapacitors  

作　　者：Se Hun Lee Kang Hyun Lee Sang-hwa Lee Soo Kweon Lee Ok Sung Jeon Young Pyo Jeon Dongpyo Hong Young Joon Yoo Sang Yoon Park Hah Young Yoo 

机构地区：[1]Advanced Institute of Convergence Technology(AICT),Seoul National University,Suwon 16229,Republic of Korea [2]Department of Biotechnology,Sangmyung University,20 Hongjimun 2-Gil,Jongno-Gu,Seoul 03016,Republic of Korea [3]Department of Bio-Convergence Engineering,Dongyang Mirae University,445-8,Gyeongin-ro,Guro-gu,Seoul 08221,Republic of Korea [4]Fermentation team,Lotte R&D Center,210 Magokjungang-Ro,Gangseo-Gu,Seoul 07594,Republic of Korea [5]School of Electronic Engineering,Kyonggi University,Gyeonggi-do 16227,Republic of Korea

出　　处：《Journal of Environmental Sciences》2025年第5期410-423,共14页环境科学学报(英文版)

基　　金：supported by the National Research Foundation of Korea(NRF)grant funded by Ministry of Science,ICT(Nos.2018M3A7B4070990,2020R1A2C2103137,2020R1F1A1076359,and 2022R1C1C2011696);the Education(Nos.2020R1A2C2103137 and 2020R1F1A1076359);Materials,Components&Equipment Research Program funded by the Gyeonggi Province。

摘　　要：Microalgae are one of the promising feedstocks for biorefinery,contributing significantly to net-zero emissions through carbon capture and utilization.However,the disposal of microalgal byproducts from the manufacturing process causes additional environmental pollution,thus,a new application strategy is required.In this study,the Tetraselmis suecica byproduct from the carotenoid extraction process was carbonized and converted into biochar.The converted biochar was proved to be nitrogen-doped biochar(NDB),up to 4.69%,with a specific surface area of 206.59m^(2)/g andwas used as an electrode for a supercapacitor.The NDB electrode(NDB-E)in half-cell showed a maximum specific capacitance of 191 F/g.In a full-cell test,the NDB-E exhibited a high energy density of 7.396 Wh/kg and a high-power density of 18,100 W/kg,and maintained specific capacity of 95.5%after charge and discharge of 10,000 cycles.In conclusion,our study demonstrated that the carotenoid-extracted microalgal byproducts are a useful resource for the supercapacitor production.This approach is the first to convert T.suecica into active materials for supercapacitors.

关 键 词：MICROALGAE Tetraselmis suecica CARBONIZATION N-doped biochar Supercapacitor 

分 类 号：TM2[一般工业技术—材料科学与工程]