High-Density Sodium and Lithium Ion Battery Anodes from Banana Peels
作者： Elmira Memarzadeh Lotfabad , Jia Ding , Kai Cui , Alireza Kohandehghan , W. Peter Kalisvaart
DOI: 10.1021/NN502045Y
关键词:
摘要: Banana peel pseudographite (BPPG) offers superb dual functionality for sodium ion battery (NIB) and lithium (LIB) anodes. The materials possess low surface areas (19–217 m2 g–1) a relatively high electrode packing density (0.75 g cm–3 vs ∼1 graphite). Tested against Na, BPPG delivers gravimetric (and volumetric) capacity of 355 mAh g–1 (by active material ∼700 cm–3, by volume ∼270 cm–3) after 10 cycles at 50 mA g–1. A nearly flat ∼200 plateau that is below 0.1 V minimal charge/discharge voltage hysteresis make direct electrochemical analogue to graphite but with Na. charge 221 500 degraded 7% 600 cycles, while 336 100 mAg–1 11% 300 in both cases ∼100% cycling Coulombic efficiency. For LIB applications (volumetric) 1090 ∼2200 ∼900 The...
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