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Solvent-free mechanochemical synthesis of Na-rich Prussian white cathodes for high-performance Na-ion batteries
He, Shunli1,4; Zhao, Junmei1,3,4; Rong, Xiaohui2; Xu, Chunliu1; Zhang, Qiangqiang2; Shen, Xing1,4; Qi, Xingguo2; Li, Yuqi2; Li, Xinyan2; Niu, Yaoshen2; Li, Xiaowei1,4; Han, Shuai2; Gu, Lin2; Liu, Huizhou1; Hu, Yong-Sheng2
2022-01-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume428Pages:9
AbstractPrussian blue analogs (PBAs) with rigid open framework are promising low-cost and easily prepared cathodes for Na-ion batteries. However, their electrochemical performances are hindered from the crystal vacancies and interstitial water in a traditional aqueous co-precipitation process. Herein, we explore a solvent-free mechanochemical protocol to prepare a monoclinic Na1.94Mn[Fe0.99(CN)6]0.95.0.05.1.92H2O via regulating the crystal water in precursors. The interstitial water of NaMHCF can be further reduced through increasing the drying temperature. Ex-situ XRD confirms that the monoclinic phase transformed to the rhombohedral structure during the first cycle, and a highly reversible multi-phase evolution among rhombohedral, cubic, and Na-poor phase upon Na+ (de)intercalations occurred from the second cycle on. Finally, it delivers a specific capacity of 168.8 mA h g-1 with a stable average voltage of 3.44 V at 10 mA g-1, showing ultra-high rate capability (127 mA h g-1 at 2000 mA g-1) and cycling stability (87.6% capacity retention after 100 cycles at 100 mA g-1) for half cells. For the full cell of NaMHCF/NaTi2(PO4)3, it can deliver an ultra-stable cycle performance, retaining 84% capacity after 500 cycles at 100 mA g-1. Our work provides a facile avenue to prepare monoclinic NaMHCF with low water and vacancies for high-performance Na-ion batteries.
KeywordSolvent-free Mechanochemical protocol Prussian white Phase evolution Interstitial water
DOI10.1016/j.cej.2021.131083
Language英语
WOS KeywordSUPERIOR CATHODE ; BLUE ANALOGS ; CHALLENGES
Funding ProjectNational Natural Science Foundation of China[51872289] ; National Natural Science Foundation of China[52072370] ; DNL Cooperation Fund, CAS[DNL201914] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21070500] ; Innovation Academy for Green Manufacture, CAS[IAGM2020C07]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; DNL Cooperation Fund, CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Innovation Academy for Green Manufacture, CAS
WOS IDWOS:000729171100003
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/51377
Collection中国科学院过程工程研究所
Corresponding AuthorZhao, Junmei; Rong, Xiaohui
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Key Lab Renewable Energy,Beijing Key Lab New Ener, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
He, Shunli,Zhao, Junmei,Rong, Xiaohui,et al. Solvent-free mechanochemical synthesis of Na-rich Prussian white cathodes for high-performance Na-ion batteries[J]. CHEMICAL ENGINEERING JOURNAL,2022,428:9.
APA He, Shunli.,Zhao, Junmei.,Rong, Xiaohui.,Xu, Chunliu.,Zhang, Qiangqiang.,...&Hu, Yong-Sheng.(2022).Solvent-free mechanochemical synthesis of Na-rich Prussian white cathodes for high-performance Na-ion batteries.CHEMICAL ENGINEERING JOURNAL,428,9.
MLA He, Shunli,et al."Solvent-free mechanochemical synthesis of Na-rich Prussian white cathodes for high-performance Na-ion batteries".CHEMICAL ENGINEERING JOURNAL 428(2022):9.
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