High-Quality Graphene Microflower Design for High-Performance Li-S and Al-Ion Batteries

被引：188

作者：

Chen, Hao ^{[1
]}

Chen, Chen ^{[1
]}

Liu, Yingjun ^{[1
]}

Zhao, Xiaoli ^{[1
]}

Ananth, Nimrodh ^{[1
]}

Zheng, Bingna ^{[1
]}

Peng, Li ^{[1
]}

Huang, Tieqi ^{[1
]}

Gao, Weiwei ^{[1
]}

Gao, Chao ^{[1
]}

机构：

[1] Zhejiang Univ, Key Lab Adsorpt & Separat Mat & Technol Zhejiang, MOE Key Lab Macromol Synth & Functionalizat, 38 Zheda Rd, Hangzhou 310027, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2017年 / 7卷 / 17期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Al-ion batteries; defect-free; high-quality graphene microflowers; largescale production; lithium-sulfur batteries; LAYER GRAPHENE; OXIDE; CARBON; FABRICATION; ELECTRODE;

D O I：

10.1002/aenm.201700051

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Poor quality and insufficient productivity are two main obstacles for the practical application of graphene in electrochemical energy storage. Here, highquality crumpled graphene microflower (GmF) for high-performance electrodes is designed. The GmF possesses four advantages simultaneously: highly crystallized defect-free graphene layers, low stacking degree, sub-millimeter continuous surface, and large productivity with low cost. When utilized as carbon host for sulfur cathode, the GmF-sulfur hybrid delivers decent areal capacities of 5.2 mAh cm(-2) at 0.1 C and 3.8 mAh cm(-2) at 0.5 C. When utilized as cathode of Al-ion battery, the GmF affords a high capacity of 100 mAh g(-1) with 100% capacity retention after 5000 cycles and excellent rate capability from 0.1 to 20 A g(-1). This facile and large-scale producible GmF represents a meaningful high-quality graphene powder for practical energy storage technology. Meanwhile, this unique high-quality graphene design provides an effective route to improve electrochemical properties of graphene-based electrodes.

引用

页数：9

共 51 条

[1]

Honeycomb Carbon: A Review of Graphene [J].