Hard Carbon Microspheres: Potassium‐Ion Anode Versus Sodium‐Ion Anode. Issue 3 (30th November 2015)

• Record Type: Journal Article
• Authors: Jian, Zelang; Xing, Zhenyu; Bommier, Clement; Li, Zhifei; Ji, Xiulei
• Is Part Of: Advanced energy materials. Volume 6:Issue 3(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2015-11-30
• Subjects: anode materials -- hard carbon -- high‐rate capability -- potassium‐ion anodes -- sodium‐ion anodes; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201501874
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract : Hard carbon microspheres (HCS) exhibit a highly reversible capacity of 262 mAh g −1 for K‐ion batteries. They present a superior rate capability for K‐ions to Na‐ions, where at 2C, HCS/K cells deliver 190 mAh g −1 in contrast to 97 mAh g −1 from HCS/Na cells. It is determined that the K‐ion diffusion coefficient of HCS is higher than that of Na‐ions.