Hard carbon anodes of sodium-ion batteries: undervalued rate capability

被引：185

作者：

Li, Zhifei ^{[1
]}

Jian, Zelang ^{[1
]}

Wang, Xingfeng ^{[1
]}

Rodriguez-Perez, Ismael A. ^{[1
]}

Bommier, Clement ^{[1
]}

Ji, Xiulei ^{[1
]}

机构：

[1] Oregon State Univ, Dept Chem, Gilbert Hall 153, Corvallis, OR 97331 USA

来源：

CHEMICAL COMMUNICATIONS | 2017年 / 53卷 / 17期

基金：

美国国家科学基金会;

关键词：

HIGH-CAPACITY ANODE; MECHANISTIC INSIGHTS; GRAPHENE; CATHODE; STORAGE;

D O I：

10.1039/c7cc00301c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The rate capability of hard carbon has long been underestimated in prior studies that used carbon/Na two-electrode half-cells. Through a three-electrode cell setup, we discover that it is the overpotential of the sodium counter electrode that drives the half-cells to the lower cutoff potential prematurely during hard carbon sodiation, particularly at high current rates, which prevents the hard carbon anode from being fully sodiated.

引用

页码：2610 / 2613

页数：4

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