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Realization of High Capacity and Cycling Stability in Pb-Free A2 CuBr4 (A=CH3 NH3 /Cs, 2 D/3 D) Perovskite-Based
Padmini Pandey1,2, Neha Sharma1, Reena A Panchal1
1Department of Physics and Centre for Energy Science, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pune, 411008, India.
Abstract:
Lead-free hybrid and inorganic perovskites (A2 CuBr4 ; A=CH3 NH3 or Cs, 2 D or3 D) are synthesized by a room-temperature solid-state reaction route and examined as anode materials in Li-ion batteries. A remarkably high reversible capacity of 630 mAh g-1 is realized in the 2 D hybrid perovskite at 100 mA g-1 at the end of 140 cycles. A full cell with this anode is also tested and shows impressive cycling stability. A good reversible capacity of 420 mAh g-1 with excellent stability tested up to 1400 cycles is also obtained for the 3 D perovskites. Pb-free hybrid/inorganic halide perovskites can thus be used as viable anode materials for battery applications.
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