Lead Oxide Microparticles Coated by Ethylenediamine-Cross-Linked Graphene Oxide for Lithium Ion Battery Anodes

被引：21
作者：
Guo, Alan [1 ]
Chen, Eric [2 ]
Wygant, Bryan R. [1 ]
Heller, Adam [2 ]
Mullins, C. Buddie [1 ,2 ,3 ,4 ]
机构：
[1] Univ Texas Austin, Dept Chem, Austin, TX 78712 USA
[2] Univ Texas Austin, McKetta Dept Chem Engn, Austin, TX 78712 USA
[3] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA
[4] Univ Texas Austin, Ctr Electrochem, Austin, TX 78712 USA
来源：
ACS APPLIED ENERGY MATERIALS | 2019年 / 2卷 / 05期
基金：
美国国家科学基金会;
关键词：
lithium-ion batteries; lead oxide; microparticles; graphene oxide; carbon coating; HIGH-CAPACITY; PBO; HETEROSTRUCTURES; NANOCOMPOSITE; NANOPARTICLES; ADSORPTION; MEMBRANES; FILMS; SI;
D O I：
10.1021/acsaem.9b00401
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lead-based anodes in Li-ion batteries have potential in stationary storage applications, due to their high theoretical volumetric energy density. In this study, the cycle performance of PbO was improved by coating it with a network of graphene oxide sheets, cross-linked by ethylenediamine. The carbon coating reduced electrode capacity degradation from 0.42% to 0.22% per cycle over 200 cycles, increased Coulombic efficiency from 96% to 99%, and increased the accessible capacity of the electrodes through improved electrical connectivity. This low-temperature carbon coating technique is potentially advantageous to other metastable and low-melting electroactive materials.
引用
收藏
页码：3017 / 3020
页数：7
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