Polyimide as a durable cathode for all-solid-state Li(Na)–organic batteries with boosted cell-level energy density
- Univ. of Wisconsin, Milwaukee, WI (United States); University of Wisconsin-Milwaukee
- Univ. of Wisconsin, Milwaukee, WI (United States)
- Sigma-Aldrich Co., LLC., MilliporeSigma, Milwaukee, WI (United States)
- Cornell Univ., Ithaca, NY (United States)
The integration of organic electrode materials (OEMs) with solid-state electrolytes (SSEs) is expected to build an all-solid-state battery (ASSB) with long-term sustainability, high safety, and high energy density. Despite this great promise, the cell-level energy density is still far from practically applicable, which stems from the ultrathick SSE layer and thin cathode layer used in a pellet-type ASSB design. Here, a cost-effective polyimide (PI) material was first exploited as an organic cathode for sulfide-based ASSBs. A capacity of ~190 mAh g-1 was delivered with almost no capacity decay over 300 cycles. Moreover, for the first time, a dry-film approach was introduced to manufacture a sheet-type Li–organic ASSB with an ultrathin SSE layer and a high-areal-loading PI cathode. Notably, PI is a perfect candidate for dry-film technology due to its high thermal stability and extraordinary chemical inertness toward sulfide SSEs. Remarkably, the free-standing SSE membrane was merely 46 μm thick, and an ultralow areal resistance of 3.3 Ω cm2 was achieved, more than tenfold lower than that of reported SSE pellets. One order of magnitude boost in the cell-level energy density was achieved. This work presents a significant leap in transferring organic ASSB technology from laboratory research to factory manufacturing.
- Research Organization:
- Univ. of Wisconsin, Milwaukee, WI (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- EE0008859
- OSTI ID:
- 1907116
- Alternate ID(s):
- OSTI ID: 1854982
- Journal Information:
- Nano Energy, Journal Name: Nano Energy Vol. 96; ISSN 2211-2855
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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