Open AccessPolymer “Tape”‐Assisted Ball‐Milling Method Fabrication Few‐Atomic‐Layered Bismuth for Improving K + /Na + Storage
Author(s) -
Tian Yu,
Li Hang,
Zhang Shuyan,
Zhang Haode,
Li Guangze,
Liu Dongqing,
Qi Yanyuan,
Jian Zelang,
Cai Xingke,
Li Fujun,
Chen Wen
Publication year - 2021
Publication title -
energy and environmental materials
Language(s) - English
Resource type - Journals
ISSN - 2575-0356
DOI - 10.1002/eem2.12114
Subject(s) - materials science , bismuth , ball mill , fabrication , graphene , anode , electrochemistry , polymer , oxide , nanotechnology , energy storage , chemical engineering , composite material , electrode , metallurgy , chemistry , power (physics) , pathology , medicine , alternative medicine , physics , quantum mechanics , engineering
Few‐layered 2D analogs exhibit new physical/chemical properties, leading to a strong research interest and broad areas of application. Recently, lots of methods (such as ultrasonic and electrochemical methods) have already used to prepared 2D materials. However, these methods suffer from the drawbacks of low yield, high cost, or precarious state, which limit the large‐scale applications. Inspired by the famous Scotch tape method, we develop a ball‐milling with polymer “tape” method, fabricating few‐atomic‐layered material, showing the high‐yield, low‐cost, and much stability. As electrode material, ultrathin 2D materials can shorten the ion transfer pathway, contributing to the development of high‐power batteries. Meanwhile, few‐atomic‐layered structure can expose more active sites to increase their capacity, showing special energy storage mechanism. We use the as‐prepared few‐atomic‐layered Bi (FALB) and reduced oxide graphene composites as the anode for potassium/sodium‐ion batteries (KIBs/NIBs). The sample achieves a high reversible capacity of 395 mAh g −1 for KIBs, of which FALB contributes 438 mAh g −1 (higher than the theoretical capacity of Bi, 386 mAh g −1 ), and it carries outstanding cycle and rate performance in KIBs/NIBs.