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author：

Zhang, C. (Zhang, C..) [1] | Zheng, H. (Zheng, H..) [2] | Lin, L. (Lin, L..) [3] | Wen, J. (Wen, J..) [4] | Zhang, S. (Zhang, S..) [5] | Hu, X. (Hu, X..) [6] | Zhou, D. (Zhou, D..) [7] | Sa, B. (Sa, B..) [8] | Wang, L. (Wang, L..) [9] | Lin, J. (Lin, J..) [10] | Xie, Q. (Xie, Q..) [11] | Peng, D.-L. (Peng, D.-L..) [12] | Lu, J. (Lu, J..) [13]

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Scopus

Abstract：

Solid-state　electrolytes　(SSE)　exhibit　great　promise　in　enhancing　the　safety　of　Li　metal　batteries　by　replacing　flammable　liquid　electrolytes.　However,　the　practical　application　of　SSE　is　hampered　mainly　due　to　the　poor　electrode–electrolyte　interface,　low　ion　conductivity,　and　inferior　electrochemical　stability.　Herein,　superior　nonflammable　solid　polymer　electrolytes　are　elaborately　designed　by　in　situ　encapsulating　succinonitrile　(SN)-based　deep　eutectic　solvent　(DES)　into　the　ethoxylated　trimethylolpropane　triacrylate　(ETPTA)　matrix　(DES-ETPTA).　Benefiting　from　strong　polarity　and　high　anti-oxidation　capability,　as-prepared　DES-ETPTA　electrolyte　shows　high　ionic　conductivity　(9.55　×　10−4　S　cm−1　at　30　°C),　high　Li+　transference　number　(0.68),　and　good　electrochemical　stability.　As　a　result,　the　assembled　LiFePO4　||　Li　full　cells　based　on　the　designed　DES-ETPTA　electrolyte　deliver　a　high　reversible　capacity　and　capacity　retention　at　−10　°C　and　room　temperature.　Furthermore,　considering　the　compatibility　with　high-voltage　layered　oxide　cathode,　the　electrochemical　stability　of　the　ETPTA　is　further　improved　through　the　decoration　of　cyanoacrylate　(CA)　with　strong　electron-withdrawing　characteristic　of　C≡N.　Consequently,　the　constructed　4.5 V　LiCoO2　||　Li　full　cells　using　DES-ETPTA-CA　electrolyte　deliver　a　high　reversible　capacity　of　144　mAh　g−1　and　a　superior　retention　rate　of　93%　after　200　cycles　at　0.5　C.　This　work　paves　a　new　pathway　to　design　high-safety　and　high-voltage　solid　polymer　electrolytes　for　lithium　metal　batteries.　©　2024　Wiley-VCH　GmbH.

Keyword：

deep eutectic solvent ethoxylated trimethylolpropane triacrylate high-voltage Li metal batteries solid polymer electrolytes

Community：

  • [ 1 ] [Zhang C.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 2 ] [Zheng H.]College of Chemical and Biological Engineering, Zhejiang University, Zhejiang Province, Hangzhou, 310027, China
  • [ 3 ] [Lin L.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 4 ] [Wen J.]Multiscale Computational Materials Facility, and Key Laboratory of Eco-Materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350100, China
  • [ 5 ] [Zhang S.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 6 ] [Hu X.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 7 ] [Zhou D.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 8 ] [Sa B.]Multiscale Computational Materials Facility, and Key Laboratory of Eco-Materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350100, China
  • [ 9 ] [Wang L.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 10 ] [Lin J.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 11 ] [Xie Q.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 12 ] [Peng D.-L.]State Key Laboratory for Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, Xiamen, 361005, China
  • [ 13 ] [Lu J.]College of Chemical and Biological Engineering, Zhejiang University, Zhejiang Province, Hangzhou, 310027, China
  • [ 14 ] [Lu J.]Quzhou Institute of Power Battery and Grid Energy Storage, Zhejiang Province, Quzhou, 324003, China

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Source ：

Advanced Energy Materials

ISSN： 1614-6832

Year： 2024

Issue： 35

Volume： 14

2 4 . 4 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 1

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