Li-ion and Na-ion insertion into size-controlled nickel hexacyanoferrate nanoparticles

被引：36

作者：

Li, Carissa H. ^{[1
]}

Nanba, Yusuke ^{[2
]}

Asakura, Daisuke ^{[2
]}

Okubo, Masashi ^{[3
]}

Talham, Daniel R. ^{[1
]}

机构：

[1] Univ Florida, Dept Chem, Gainesville, FL 32611 USA

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[3] Univ Tokyo, Sch Engn, Dept Chem Syst Engn, Tokyo 1138656, Japan

来源：

RSC ADVANCES | 2014年 / 4卷 / 48期

基金：

美国国家科学基金会;

关键词：

PRUSSIAN BLUE ANALOG; CATHODE MATERIALS; PARTICLE-SIZE; COBALT HEXACYANOFERRATE; PHOTOINDUCED MAGNETISM; COORDINATION POLYMERS; SHELL NANOPARTICLES; ELECTRODE MATERIALS; BATTERY ELECTRODES; LITHIUM BATTERIES;

D O I：

10.1039/c4ra03296a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The influence of particle size on the electrochemical properties of guest-ion storage materials has attracted much attention because of the extensive need for long cycle-life, high energy density, and high power batteries. The present work describes a systematic study of the effect of particle size on the guest-ion storage capabilities of a cyanide-bridged coordination polymer. A series of nickel hexacyanoferrate particles ranging from approximately 40 to 400 nm were synthesized by a co-precipitation method and were used as the cathode material for both Li-ion and Na-ion insertion/extraction experiments using organic electrolyte. A large polarization was observed for the largest particles during Li-ion cycling, indicating a heterogeneous ion concentration within the lattice. As a consequence, the available capacity of Li-ion intercalation at high rates is significantly improved by reducing the particle size. On the other hand, Na-ion intercalation shows excellent rate capability regardless of the particle size.

引用

页码：24955 / 24961

页数：7

共 41 条

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