ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
The effect of carbonization temperature of waste cigarette butts on Na-storage capacity of N-doped hard carbon anode
Hongying Hou, Chengyi Yu, Xianxi Liu, Yuan Yao, Zhipeng Dai, and Dongdong Li
Kunming University of Science and Technology, Kunming, China
Abstract: It has always been a widespread concern that countless waste cigarette butts cause resource waste and environmental pollution, so it is necessary to explore their recovery and reutilization. For this purpose, waste cigarette butts were recycled via pyrolysis carbonization at 700 °C and 800 °C for sodium ion battery (SIB) anode, respectively. The results suggested that the micro-structure and electrochemical Na-storage performances of N-doped waste cigarette butts hard carbon (NWHC) were affected by the carbonization temperature. For example, NWHC carbonized at 700 °C (NWHC-700) possessed lower degree of graphitization, higher content of N element and larger interlayer spacing than NWHC at 800 °C (NWHC-800). And also, NWHC-700 anode delivered the reversible discharge capacities of 300 mAh g−1 at 25 mA g−1 for 200 cycles and 135 mAh g−1 even at 1500 mA g−1 for 2000 cycles, higher than 241 mAh g−1 and 105 mAh g−1 of NWHC-800 anode, respectively. More disordered micro-structure, lower degree of graphitization, larger interlayer spacing and higher content of N element of NWHC-700 anode may be jointly responsible for higher electrochemical Na-storage performances, which would delay the afflux of the waste cigarette butts into the waste streams.
Keywords: Waste cigarette butts ; N-doped hard carbon ; Sodium ion battery ; Anode
Full paper is available at www.springerlink.com.
Chemical Papers 73 (5) 1237–1246 (2019)