Topological Defect‐Regulated Porous Carbon Nanoribbon for High‐Performance Potassium‐Ion Batteries
Year: 2024
Type: article
Abstract: Potassium‐ion batteries (PIBs) using carbonaceous anode materials have attracted a great deal of research interest. However, the large atomic size of potassium ions inevitably leads to huge volume expansion and the collapse of anodes during intercalation, which greatly hinders rate performance and cycling life. In this work, carbon nanotube‐derived porous N‐doped carbon nanoribbon (CNR) bundles are designed as an anode for PIBs. These CNR materials are in rich defects which provide fast channels for charge transport and abundant active sites for potassium ion storage. The CNR materials exhibit a maximum capacity of 441.4 mA h g −1 at a current density of 0.2 A g −1 after 200 cycles as well as a highly reversible capacity of 263.6 mA h g −1 at a current density of 5.0 A g −1 even after 1000 cycles. This work provides guidance for the structure design of nanoribbon materials for high‐performance PIBs.
Source: Small
Authors: Yongsheng Zhou, Yingchun Zhu, You Liu, Bingshe Xu
Institutions: Anhui University of Science and Technology, Anhui Science and Technology University, National Laboratory of Solid State Microstructures, Nanjing University, Chinese Academy of Sciences, Shanghai Institute of Ceramics, University of Chinese Academy of Sciences, Taiyuan University of Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Awards: G2371349769, G7940929852
OpenAlex ID: W4404866575