Improved Li+ Storage through Homogeneous N-Doping within Highly Branched Tubular Graphitic Foam

Jinyang Dong; Yanming Xue; Chao Zhang; Qunhong Weng; Pengcheng Dai; Yijun Yang; Min Zhou; Cuiling Li; Qiuhong Cui; Xiaohong Kang; Chengchun Tang; Yoshio Bando; Dmitri Golberg; Xi Wang

doi:10.1002/adma.201603692

Improved Li⁺ Storage through Homogeneous N-Doping within Highly Branched Tubular Graphitic Foam

Adv Mater. 2017 Feb;29(6). doi: 10.1002/adma.201603692. Epub 2016 Dec 2.

Authors

Jinyang Dong¹, Yanming Xue², Chao Zhang², Qunhong Weng², Pengcheng Dai³, Yijun Yang¹, Min Zhou², Cuiling Li², Qiuhong Cui¹, Xiaohong Kang¹, Chengchun Tang^{4

5}, Yoshio Bando², Dmitri Golberg², Xi Wang¹

Affiliations

¹ Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China.
² International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan.
³ Research Institute of Unconventional Petroleum and Renewable Energy, China University of Petroleum (East China), Qingdao, 266580, P. R. China.
⁴ School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China.
⁵ Hebei Key Laboratory of Boron Nitride Micro- and Nano-Materials, Tianjin, 300130, P. R. China.

PMID: 27911034
DOI: 10.1002/adma.201603692

Abstract

A novel carbon structure, highly branched homogeneous-N-doped graphitic (BNG) tubular foam, is designed via a novel N, N-dimethylformamide (DMF)-mediated chemical vapor deposition method. More structural defects are found at the branched portions as compared with the flat tube domains providing abundant active sites and spacious reservoirs for Li⁺ storage. An individual BNG branch nanobattery is constructed and tested using in situ transmission electron microscopy and the lithiation process is directly visualized in real time.

Keywords: highly branched graphitic foams; homogeneous N-doping; improved Li+-ions storage; in situ TEM; lithium ion batteries.