Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 912, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2022.165151
Keywords
Zinc-iodine battery; Biomass-derived material; Hierarchically porous carbon; High specific surface area; Iodine adsorption
Categories
Funding
- Natural Science Foundation of Shandong Province [ZR2020QE012, ZR2020MC156, ZR2020ME078, ZR2018MEM012]
- Young Doctor Cooperative Fund of Qilu University of Technology (Shandong Academy of Sciences) [2019BSHZ0025]
- Foundation of State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences [ZZ20200113]
- Shandong Provincial Universities Young Innovative Talent Incubation Program-Inorganic Non-metallic Materials Research and Innovation Team
- Opening fund of Tianjin Key Laboratory of Advanced Functional Porous Materials
- Foundation of State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences)
- Development Fund for Institutes and Universities in Jinan
- Scientific Research Foundation for the Returned Overseas Scholars in Jinan [2019GGX102066, 202110431012]
- Shandong Provincial Key RD Program [S202010431012]
- National Training Program of Innovation and Entrepreneurship for Undergraduates [QLUTGJHZ2018025]
- Qilu University of Technology International Cooperation Fund [31971605]
- National Natural Science Foundations of China [31570566, 31500489]
- [ZZ20210121]
- [ZZ20190107]
- [2020GXRC027]
- [20100406]
- [51403111]
- [51503107]
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In this study, a biomass derived hierarchically porous carbon (BCHP) was designed as an iodine host material for high-performance ZnI2 battery. The hierarchically porous structure of BCHP enables effective confinement of iodine, electrolyte permeation, and electron/ion transfers, resulting in superior electrochemical performance.
The practical application of aqueous zinc-iodine (Zn-I-2) battery is mainly hindered by the limited electrical conductivity, sluggish kinetics and severe shuttle effect. In this regard, herein, we designed a biomass derived hierarchically porous carbon (marked as BCHP) as an iodine host material for high-performance ZnI2 battery. The hierarchically porous structure of BCHP is favourable for iodine confinements, electrolyte permeation as well as electron/ion transfers. As a result, the I-BCHP electrode exhibits superior electrochemical performance. A high discharge capacity of 100 mAh g(-1) is still retained for over 150 cycles at a current density of 100 mA g(-1). Our study provides an economical and effective scheme for the significant improvement of Zn-I-2 battery performance. (C) 2022 Elsevier B.V. All rights reserved.
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