Premium
Radially Inwardly Aligned Hierarchical Porous Carbon for Ultra‐Long‐Life Lithium–Sulfur Batteries
Author(s) -
Yu Zhisheng,
Liu Menglan,
Guo Daying,
Wang Jiahui,
Chen Xing,
Li Jun,
Jin Huile,
Yang Zhi,
Chen Xi'an,
Wang Shun
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201914972
Subject(s) - sulfur , carbon fibers , materials science , electrolyte , chemical engineering , cathode , porosity , lithium (medication) , polysulfide , nanotechnology , chemistry , composite material , electrode , composite number , metallurgy , medicine , engineering , endocrinology
Rational design of hollow micro‐ and/or nano‐structured cathodes as sulfur hosts has potential for high‐performance lithium‐sulfur batteries. However, their further commercial application is hindered because infusing sulfur into hollow hosts is hard to control and the interactions between high loading sulfur and electrolyte are poor. Herein, we designed hierarchical porous hollow carbon nanospheres with radially inwardly aligned supporting ribs to mitigate these problems. Such a structure could aid the sulfur infusion and maximize sulfur utilization owing to the well‐ordered pore channels. This highly organized internal carbon skeleton can also enhance the electronic conductivity. The hollow carbon nanospheres with further nitrogen‐doping as the sulfur host material exhibit good capacity and excellent cycling performance (0.044 % capacity degradation per each cycle for 1000 cycles).