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A Long‐Cycle‐Life Lithium–CO 2 Battery with Carbon Neutrality
Author(s) -
Ahmadiparidari Alireza,
Warburton Robert E.,
Majidi Leily,
Asadi Mohammad,
Chamaani Amir,
Jokisaari Jacob R.,
Rastegar Sina,
Hemmat Zahra,
Sayahpour Baharak,
Assary Rajeev S.,
Narayanan Badri,
Abbasi Pedram,
Redfern Paul C.,
Ngo Anh,
Vörös Márton,
Greeley Jeffrey,
Klie Robert,
Curtiss Larry A.,
SalehiKhojin Amin
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201902518
Subject(s) - battery (electricity) , materials science , electrolyte , energy storage , carbon fibers , lithium (medication) , cathode , organic radical battery , chemical engineering , charge cycle , nanotechnology , composite number , electrode , chemistry , composite material , thermodynamics , power (physics) , automotive battery , medicine , physics , engineering , endocrinology
Abstract Lithium–CO 2 batteries are attractive energy‐storage systems for fulfilling the demand of future large‐scale applications such as electric vehicles due to their high specific energy density. However, a major challenge with Li–CO 2 batteries is to attain reversible formation and decomposition of the Li 2 CO 3 and carbon discharge products. A fully reversible Li–CO 2 battery is developed with overall carbon neutrality using MoS 2 nanoflakes as a cathode catalyst combined with an ionic liquid/dimethyl sulfoxide electrolyte. This combination of materials produces a multicomponent composite (Li 2 CO 3 /C) product. The battery shows a superior long cycle life of 500 for a fixed 500 mAh g −1 capacity per cycle, far exceeding the best cycling stability reported in Li–CO 2 batteries. The long cycle life demonstrates that chemical transformations, making and breaking covalent CO bonds can be used in energy‐storage systems. Theoretical calculations are used to deduce a mechanism for the reversible discharge/charge processes and explain how the carbon interface with Li 2 CO 3 provides the electronic conduction needed for the oxidation of Li 2 CO 3 and carbon to generate the CO 2 on charge. This achievement paves the way for the use of CO 2 in advanced energy‐storage systems.