1.89 $ kg-1 lake-water-based semisolid electrolytes for highly efficient energy storage

Chao LU*, Xi CHEN

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

3 Citations (Scopus)


Solid electrolytes with fast ion kinetics and superior mechanical properties are critical to electrochemical energy devices; however, how to design low-cost, high-performance solid electrolytes has become a critical challenge in the energy field, and significant progress has not been achieved until now. Here, lake-water-based semisolid electrolytes with a low cost of 1.89 $ kg-1 have been put forward for the purpose of market promotion. By virtue of the palygorskite dopants and lake water source, the electrolytes display satisfying mechanical, electrical, and electrochemical properties as well as economic benefits. The application potential of electrolytes has been demonstrated by employing a polyelectrolyte with ionic conductivity of 0.82 × 10-4 S cm-1 in flexible supercapacitors. The as-assembled devices give a high energy density of 54.72 Wh kg-1 and excellent cycling stability with a capacity retention of 94.8% over 20 000 cycles. The flexibility of devices has been verified through 5000 repetitive bending tests. Our work presents insight into the design of flexible solid electrolytes based on cheap and green raw materials. © 2023 American Chemical Society.
Original languageEnglish
Pages (from-to)6596-6601
Number of pages6
JournalNano Letters
Issue number14
Publication statusPublished - 14 Jul 2023
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by startup funding from Soochow University (NH10900623), the Natural Science Foundation of Jiangsu Province (BK20220505), Jiangsu Specially Appointed Professorship, Leading Talents of Innovation and Entrepreneurship of Gusu, Earth Engineering Center, and Center for Advanced Materials for Energy and Environment at Columbia University.

Publisher Copyright:
© 2023 American Chemical Society


  • energy density
  • flexibility
  • lake water
  • low cost
  • semisolid electrolyte


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