%0 Journal Article
%A Sun, Xueliang
%A Zhao, Yang
%A Yang, Xiaofei
%A Kuo, Liang-Yin
%A Kaghazchi, Payam
%A Sun, Qian
%A Liang, Jianneng
%A Wang, Biqiong
%A Lushington, Andrew
%A Li, Ruying
%A Zhang, Huamin
%T High Capacity, Dendrite-Free Growth, and Minimum Volume Change Na Metal Anode
%J Small
%V 14
%N 20
%@ 1613-6810
%C Weinheim
%I Wiley-VCH
%M FZJ-2018-02573
%P 1703717
%D 2018
%X Na metal anode attracts increasing attention as a promising candidate for Na metal batteries (NMBs) due to the high specific capacity and low poten-tial. However, similar to issues faced with the use of Li metal anode, crucial problems for metallic Na anode remain, including serious moss-like and den-dritic Na growth, unstable solid electrolyte interphase formation, and large infinite volume changes. Here, the rational design of carbon paper (CP) with N-doped carbon nanotubes (NCNTs) as a 3D host to obtain Na@CP-NCNTs composites electrodes for NMBs is demonstrated. In this design, 3D carbon paper plays a role as a skeleton for Na metal anode while vertical N-doped carbon nanotubes can effectively decrease the contact angle between CP and liquid metal Na, which is termed as being “Na-philic.” In addition, the cross-conductive network characteristic of CP and NCNTs can decrease the effective local current density, resulting in uniform Na nucleation. Therefore, the as-prepared Na@CP-NCNT exhibits stable electrochemical plating/strip-ping performance in symmetrical cells even when using a high capacity of 3 mAh cm−2 at high current density. Furthermore, the 3D skeleton structure is observed to be intact following electrochemical cycling with minimum volume change and is dendrite-free in nature.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:29658174
%U <Go to ISI:>//WOS:000434172700005
%R 10.1002/smll.201703717
%U https://juser.fz-juelich.de/record/845295