4.6 Article

Flexible Light-Weight Lithium-Ion-Conducting Inorganic-Organic Composite Electrolyte Membrane

期刊

ACS ENERGY LETTERS
卷 2, 期 5, 页码 1130-1136

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.7b00204

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资金

  1. National Research Foundation, Prime Minister's Office, Singapore under its Competitive Research Programme (CRP Award) [NRF-CRP 10-2012-6]
  2. NUS Centre for Energy Research grant

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A fast Li+-ion-conducting membrane is the key component behind successful performance of an aqueous or hybrid Li-air battery. Currently available ceramic ionic conductors are hardly scalable, difficult to seal, brittle, and electrochemically unstable against the commonly used catholytes. In this work, an easily scalable high-performance hybrid inorganic-organic membrane is realized that consists of NASICON-type Li1+xAlxGe2-x(PO4)(3) (LAGP) as the fast ion-conducting ceramic filler within a high-stability polymer blend. The as-prepared hybrid membrane exhibits high ionic conductivity of 1.0 x 10(-4) S cm(-1) with chemical stability in both neutral and acidified lithium chloride solutions. Energy efficiency of >93% under a current density of 0.03 mA cm(-2) for aqueous/hybrid Li-air batteries enabled by this hybrid anode-protecting membrane is demonstrated.

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