All-in-one assembly based on 3D-intertangled and cross-jointed architectures of Si/Cu 1D-nanowires for lithium ion batteries

被引：17

作者：

Hwang, Chihyun ^{[1
]}

Kim, Tae-Hee ^{[1
]}

Cho, Yoon-Gyo ^{[1
]}

Kim, Jieun ^{[1
]}

Song, Hyun-Kon ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, Sch Energy & Chem Engn, Ulsan 689798, South Korea

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

SILICON NEGATIVE ELECTRODES; HIGH-CAPACITY; SI ANODES; NANOWIRES; NANOPARTICLES; CHALLENGES; NANOTUBES; GRAPHENE; NETWORK; BINDER;

D O I：

10.1038/srep08623

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

All-in-one assemblies of separator, electrode and current collector (SECA) for lithium ion batteries are presented by using 1D nanowires of Si and Cu (nwSi and nwCu). Even without binders, integrity of SECA is secured via structural joints based on ductility of Cu as well as entanglement of nwSi and nwCu. By controlling the ratio of the nanowires, the number of contact points and voids accommodating volume expansion of Si active material are tunable. Zero volume expansion and high energy density are simultaneously achievable by the architecture.

引用

页数：7

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