Cellulose‐Templated, Dual‐Carbonized Na3V2(PO4)3 for Energy Storage with High Rate Capability. Issue 16 (1st June 2018)

• Record Type: Journal Article
• Authors: Sohn, DongRak; Ko, Jong Wan; Son, Eun Jin; Ko, Sung Hyun; Kim, Tae‐Hee; Kwon, HyukSang; Park, Chan Beum
• Is Part Of: ChemElectroChem. Volume 5:Issue 16(2018)
• Page Start: 2186
• Page End: 2191
• Publication Date: 2018-06-01
• Subjects: sodium-ion battery -- Na3V2(PO4)3 -- carbonization -- cellulose -- rate capability; Electrochemistry -- Periodicals; 541.37
• DOI: 10.1002/celc.201800642
• Languages: English
• ISSNs: 2196-0216

Abstract

Abstract: Sodium‐ion rechargeable batteries are a promising candidate for large‐scale electrical energy storage systems, owing to the abundance of sodium resources. Herein, we report the development of carbon‐incorporated NASICON‐Na3 V2 (PO4 )3 (NVP) as an active cathode material for Na‐ion batteries, using carboxymethyl cellulose (CMC) and sucrose as dual carbon sources. The interaction between CMC and sucrose resulted in the formation of a highly porous structure (surface area: 58.998 m 2 g −1 ) with increased sp 2 carbon species, facilitating mass and charge transportation. The specific capacity (104.99 mAh g −1 ) of dual‐carbonized CMC/sucrose‐NVP (CS‐NVP) was close to the theoretical capacity (117.6 mAh g −1 ). Furthermore, dual‐carbonized NVP exhibited stable cyclability, showing a specific capacity of 75.04 mA g −1 even at a high rate of 20 C. Abstract : Dual carbon sources : Carbon‐incorporated NASICON‐Na3 V2 (PO4 )3 (NVP) as an active cathode material for Na‐ion batteries is developed by using carboxymethyl cellulose (CMC) and sucrose. The dual‐carbonized NVP exhibited stable cyclability, showing a specific capacity of 75.04 mA g −1 even at a high rate of 20 C.