Effects of ester-based electrolyte composition and salt concentration on the Na-storage stability of hard carbon anodes

• Published in: Journal of power sources Vol. 471; p. 228455
• Main Authors: Chen, Cheng, Wu, Mengqiang, Liu, Jiahao, Xu, Ziqiang, Zaghib, Karim, Wang, Yuesheng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 30.09.2020
• Subjects: Electrochemical stability; Ester-based electrolytes; Hard carbon; NaTFSI; Sodium-ion batteries; Hard carbon; NaTFSI; Sodium-ion batteries; Electrochemical stability; Ester-based electrolytes

Hard carbon (HC) is the most feasible anode for Na-ion batteries (NIBs). However, HC electrodes suffer from low initial coulombic efficiency (ICE), poor rate capability and cyclic instability. Here, a systematic investigation was carried out to understand the effect of Na salt, esters-based solvent...