期刊
NATURE COMMUNICATIONS
卷 13, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41467-022-33039-9
关键词
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资金
- National Natural Science Foundation of China [22125110, 21875251, 22205233, 21833010]
- Key Research Program of Frontier Sciences of the Chinese Academy of Sciences [ZDBS-LY-SLH024]
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China [2021ZR126]
- Strategic Priority Research Program of the CAS [XDB20010200]
- National Postdoctoral Program for Innovative Talents [BX2021315]
Metal-free antiferroelectric materials have great potential for energy storage applications due to their wearability, environmental friendliness, and structure tunability. This study successfully synthesized binary CMBr(x)l(1-x) and CMBrxCl1-x solid solution single crystals, with a molecule-level modification to enhance the Curie temperature. Among the known molecular antiferroelectrics, the binary CM-chloride salt exhibits the highest antiferroelectric-to-paraelectric Curie temperature and provides a large electric polarization, enabling notable energy storage behaviors. This work introduces an effective solid-solution methodology for the targeted design of new metal-free antiferroelectric candidates towards biocompatible energy storage devices.
Metal-free antiferroelectric materials are holding a promise for energy storage application, owing to their unique merits of wearability, environmental friendliness, and structure tunability. Despite receiving great interests, metalfree antiferroelectrics are quite limited and it is a challenge to acquire new soft antiferroelectric candidates. Here, we have successfully exploited binary CMBr(x)l(1-x), and CMBrxCl1-x, solid solution as single crystals (0 <= x <= 1, where CM is cyclohexylmethylammonium). A molecule-level modification can effectively enhance Curie temperature. Emphatically, the binary CM-chloride salt shows the highest antiferroelectric-to-paraelectric Curie temperature of similar to 453 K among the known molecular antiferroelectrics. Its characteristic double electrical hysteresis loops provide a large electric polarization up to similar to 11.4 mu C/cm(2), which endows notable energy storage behaviors. To our best knowledge, this work provides an effective solid-solution methodology to the targeted design of new metal-free antiferroelectric candidates toward biocompatible energy storage devices.
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