静电纺丝制备Zn2GeO4纳米纤维.pptx

静电纺丝制备Zn2GeO4纳米纤维.pptxACS Appl. Mater. Interfaces 2016, 8, 31722−31728
Carbon-Free Porous Zn2GeO4 Nanofibers as Advanced Anode Materials for High-Performance Lithium Ion Batteries
† Faculty of Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University,
Changchun, Jilin 130024, China
‡ School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
Reporter:HaHaHa
2016-12-10
Huan-Huan Li, †,§ Xing-Long Wu, †,‡,§ Lin-Lin Zhang, † Chao-Ying Fan, † Hai-Feng Wang, † Xiao-Ying Li, †
Hai-Zhu Sun,* ,† Jing-Ping Zhang,* ,† and Qingyu Yan* ,‡
Abstract
Introduction
Experimental Section
Results and Discussion
Conclusions
2
Main contents
Abstract
In this work, carbon-free, porous, and micro/nano-structural Zn2GeO4 nanofibers (p-ZGONFs) have been prepared via a dissolution-recrystallization-assisted electrospinning technology.
Electrochemical tests demonstrate that the as-prepared p-ZGONFs exhibit superior Li-storage properties in terms of high initial reversible capacity, outstanding cycling stability, and excellent high-rate capabilities.
The much enhanced Li-storage properties should be attributed to its distinctive structural characteristics including the carbon-position, plentiful pores, and micro/nanostructures.
Carbon-position promises its high theoretical Li-storage capacity.
Plentiful pores cannot only modate the volumetric variations during the essive lithiation/ delithiation but can also serve as the electrolyte reservoirs to facilitate Li interaction with electrode materials.
1. Introduction
With today’s modern technology, lithium ion batteries (LIBs) have been widely used as a main energy storage system to power portable electronics and electric vehicles.
requirements of the rapidly developed applications
higher power and energy densities
Zn2GeO4
promising anode materials for LIBs
Advantage
This high value originates from the dual Li-alloying reactions of Zn and Ge atoms in a