Solid-to-liquid transition of polycarbonate solid electrolytes in Li-metal batteries

被引：65

作者：

Commarieu, Basile ^{[1
]}

Paolella, Andrea ^{[1
]}

Collin-Martin, Steve ^{[1
]}

Gagnon, Catherine ^{[1
]}

Vijh, Ashok ^{[1
]}

Guerfi, Abdelbast ^{[1
]}

Zaghib, Karim ^{[1
]}

机构：

[1] Hydro Quebec, Ctr Excellence Transportat Electrificat & Energy, Varennes, PQ J0L 1N0, Canada

来源：

JOURNAL OF POWER SOURCES | 2019年 / 436卷

关键词：

Electrolyte; Polycarbonate; Transition; Decomposition; Lithium; Battery; ION CONDUCTION; POLYMER; DEPOLYMERIZATION;

D O I：

10.1016/j.jpowsour.2019.226852

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we analyzed the thermal stability of polycarbonate: lithium trifluoromethane sulphonylimide (LiTFSI) systems. Polyethylene carbonate (PEC) and polypropylene carbonate (PPC) undergo depolymerization to ethylene carbonate (EC) and propylene carbonate (PC), respectively, in the presence of Li salt under annealing treatment. The decomposition reaction can explain the surprising high ionic conductivity recently reported for solid polymer electrolyte (SPE) polycarbonate-based systems. Because this phenomenon can strongly impact the results of SPE research, it is essential to control the depolymerization of polymers to avoid inaccurate electrochemical performance. In addition, we observed that the standard drying procedure for the preparation of high salt-concentration polymer (polymer-in-salt) SPEs traps a high amount of residual solvent, e.g., acetonitrile (ACN), due to the strong bond between the solvent and ionic species. This finding represents another factor influencing the remarkably high ionic conductivity.

引用

页数：6

共 21 条

[1] Conductivity hysteresis in polymer electrolytes incorporating poly(tetrahydrofuran) [J].

Akbulut, Ozge ;

Taniguchi, Ikuo ;

Kumar, Sundeep ;

Shao-Horn, Yang ;

Mayes, Anne M. .

ELECTROCHIMICA ACTA, 2007, 52 (05) :1983-1989

[2] Toward high lithium conduction in solid polymer and polymer-ceramic batteries [J].

Commarieu, Basile ;

Paolella, Andrea ;

Daigle, Jean-Christophe ;

Zaghib, Karim .

CURRENT OPINION IN ELECTROCHEMISTRY, 2018, 9 :56-63

[3] Polymer Electrolytes [J].

Hallinan, Daniel T., Jr. ;

Balsara, Nitash P. .

ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 43, 2013, 43 :503-+

[4] New Lithium Metal Polymer Solid State Battery for an Ultrahigh Energy: Nano C-LiFePO4 versus Nano Li1.2V3O8 [J].

Hovington, P. ;

Lagace, M. ;

Guerfi, A. ;

Bouchard, P. ;

Manger, A. ;

Julien, C. M. ;

Armand, M. ;

Zaghib, K. .

NANO LETTERS, 2015, 15 (04) :2671-2678

[5] Ionic liquids/ZnO nanoparticles as recyclable catalyst for polycarbonate depolymerization [J].

Iannone, Francesco ;

Casiello, Michele ;

Monopoli, Antonio ;

Cotugno, Pietro ;

Sportelli, Maria Chiara ;

Picca, Rosaria Anna ;

Cioffi, Nicola ;

Dell'Anna, Maria M. ;

Nacci, Angelo .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2017, 426 :107-116

[6] Study on depolymerization of polycarbonate in supercritical ethanol [J].

Jie, Huang ;

Ke, Huang ;

Qing, Zhou ;

Lei, Chen ;

Wu Yongqiang ;

Zhu Zibin .

POLYMER DEGRADATION AND STABILITY, 2006, 91 (10) :2307-2314

[7] Room-Temperature Performance of Poly(Ethylene Ether Carbonate)-Based Solid Polymer Electrolytes for All-Solid-State Lithium Batteries [J].

Jung, Yun-Chae ;

Park, Myung-Soo ;

Kim, Duck-Hyun ;

Ue, Makoto ;

Eftekhari, Ali ;

Kim, Dong-Won .

SCIENTIFIC REPORTS, 2017, 7

[8] Ring-opening polymerization of ethylene carbonate and depolymerization of poly(ethylene oxide-co-ethylene carbonate) [J].

Lee, JC ;

Litt, MH .

MACROMOLECULES, 2000, 33 (05) :1618-1627

[9] Beyond PEO-Alternative host materials for Li+-conducting solid polymer electrolytes [J].

Mindemark, Jonas ;

Lacey, Matthew J. ;

Bowden, Tim ;

Brandell, Daniel .

PROGRESS IN POLYMER SCIENCE, 2018, 81 :114-143

[10] Lithium ion conductive properties of aliphatic polycarbonate [J].

Okumura, Takefumi ;

Nishimura, Shin .

SOLID STATE IONICS, 2014, 267 :68-73

← 1 2 3 →