Communication—Surprisingly High Fast Charge Volumetric Capacities of Hard Carbon Electrodes in Sodium-Ion Batteries | Zendy

Ashish Rudola | Zendy; Christopher J. Wright | Zendy; J. Barker | Zendy

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Communication—Surprisingly High Fast Charge Volumetric Capacities of Hard Carbon Electrodes in Sodium-Ion Batteries

Author(s) -

Ashish Rudola,

Christopher J. Wright,

J. Barker

Publication year - 2021

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1945-7111/ac377a

Subject(s) - anode , electrode , ion , graphite , lithium (medication) , sodium , carbon fibers , materials science , chemistry , analytical chemistry (journal) , composite material , metallurgy , chromatography , composite number , organic chemistry , medicine , endocrinology

We show herein that electrode-level effects of commercially-available hard carbon (HC) material, as a function of the HC loading, can have two surprising positive outcomes in sodium-ion (Na-ion) pouch cells. First, a HC electrode’s plating-free volumetric capacity actually increases as its loading (and areal capacity) decreases, and secondly, the plating-free volumetric capacity at sub-30 min charging times for HC as Na-ion anode, can be better vs that of graphite anode in lithium-ion (Li-ion) cells at the electrode-level, and actually be significantly higher than the latter at sub-20 min and sub-15 min charging times, despite HC’s lower density than graphite.

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