Simple Synthesis of N-Doped Interconnected Porous Carbon from Chinese Tofu for High-Performance Supercapacitor and Lithium-Ion Battery Applications. Issue 14 (1st January 2017)

• Record Type: Journal Article
• Authors: Wang, Hanwei; Wang, Chao; Xiong, Ye; Jin, Chunde; Sun, Qingfeng
• Is Part Of: Journal of the Electrochemical Society. Volume 164:Issue 14(2017)
• Page Start: A3832
• Page End: A3839
• Publication Date: 2017-01-01
• Subjects: Carbon materials -- Lithium-ion batteries -- Supercapacitors; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.1401714jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : The insatiable appetite for low-cost, high-energy, stabilized and miniaturized energy storage devices has become a hot social issue in the twenty-first century. In this study, Chinese Tofu, a very common and low-cost commercial product, was used to synthesize N-doped interconnected porous carbon materials (NICPs) via a low-budget method. The special features, such as the interconnected structure, ultrahigh surface area (2471 m 2 g −1 ), abundant macropores/mesopores and heteroatom dopant, cause NICPs to exhibit satisfactory electrochemical performances in supercapacitors and lithium-ion batteries (LIBs). In a three-electrode cell, as-prepared carbon exhibited an excellent capacitance of 263 Fg −1 and an outstanding capacitance retention of 99.67% after 10000 cycles. A soft package symmetric supercapacitor made from the NICP-800 electrode, which used 1 M EMIMBF4 /AN as the electrolyte, exhibited a high-energy density of 190 Whkg −1 at a power-density of 1950 Wkg −1 over a voltage range of 4 V. Additionally, the carbon material has a high lithium storage capacity of 886 mAhg −1 and a good rate capability.