Fig. 2
From: Sustainability-inspired cell design for a fully recyclable sodium ion battery
Electrochemical behavior of a two-unit bipolar NIB cell. a Initial charge and discharge curves at 1 C in a voltage range from 5.7 to 7.6 V. b Cycling 100 times at 1 C. c Rate capabilities from 1 to 20 C. d The voltages of long cycles at the beginning and the end of each step under fast charge/discharge
