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Low-temperature Li-S battery enabled by CoFe bimetallic catalysts
Gao, Ning1; Zhang, Yujiao1; Chen, Chong2; Li, Bao3; Li, Wenbiao1; Lu, Huiqiang4; Yu, Le2; Zheng, Shumin1; Wang, Bao1
2022-03-04
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Pages12
AbstractLithium-sulfur (Li-S) batteries are considered promising energy storage devices. To ensure practical applications in a natural environment, Li-S batteries must be capable of performing normally at low temperature. However, the intrinsic characteristics of S, such as large volume variation, low conductivity, and shuttle effect, hinder its low-temperature applications. Moreover, Li+ transport is poor at low temperatures, resulting in fast capacity deterioration, low-capacity output, and large overpotential. In this study, a free-standing host embedded with CoFe bimetallic nanoparticles has been designed. CoFe functions as an efficient catalyst for the polysulfide conversion. The in situ growth of graphite shells around CoFe bimetallic nanoparticles function as a nanoreactor to confine and absorb polysulfides, and the host is an ideal porous conductivity network for rapid ion transportation, preventing the accumulation of Li2S and alleviating the volume changes during the lithiation/delithiation process. Density functional theory (DFT) calculations prove that the successive lithiation process from S-8 to Li2S on CoFe is thermodynamically spontaneous, and CoFe has a kinetic catalytic activity for this series of lithiation reactions. Experimentally, rationally designed CoFe@C@CNF cathodes are introduced into Li-S batteries for low-temperature applications. The cathode delivers superior rate capacity (828 mA h g(-1) at 10C) and a low fading rate (0.053% per cycle over 300 cycles). An enhanced capacity (836 mA h g(-1) at 0.2C) and cycling stability (capacity retention rate of 94.5% after 100 cycles) were achieved at -20 degrees C. This study provides a feasible method for developing high-rate and long-life Li-S batteries for low-temperature applications.
DOI10.1039/d2ta00406b
Language英语
WOS KeywordLITHIUM-ION BATTERY ; SULFUR CATHODE ; PERFORMANCE ; STRATEGY ; CARBON ; OXYGEN ; INTERLAYER ; SEPARATOR ; EVOLUTION ; DIFFUSION
Funding ProjectNational Natural Science Foundation of China[52172250] ; National Natural Science Foundation of China[51772296] ; National Natural Science Foundation of China[51902016]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000768952200001
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/52218
Collection中国科学院过程工程研究所
Corresponding AuthorYu, Le; Zheng, Shumin; Wang, Bao
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
3.Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Henan, Peoples R China
4.Gannan Normal Univ, Sch Geog & Environm Engn, Ganzhou Key Lab Drug Screening & Discovery, Ganzhou 341000, Peoples R China
Recommended Citation
GB/T 7714
Gao, Ning,Zhang, Yujiao,Chen, Chong,et al. Low-temperature Li-S battery enabled by CoFe bimetallic catalysts[J]. JOURNAL OF MATERIALS CHEMISTRY A,2022:12.
APA Gao, Ning.,Zhang, Yujiao.,Chen, Chong.,Li, Bao.,Li, Wenbiao.,...&Wang, Bao.(2022).Low-temperature Li-S battery enabled by CoFe bimetallic catalysts.JOURNAL OF MATERIALS CHEMISTRY A,12.
MLA Gao, Ning,et al."Low-temperature Li-S battery enabled by CoFe bimetallic catalysts".JOURNAL OF MATERIALS CHEMISTRY A (2022):12.
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