|论文题目||Bio-inspired self-breathable structure driven by the volumetric effect: an unusual driving force of metal sulfide for high alkaline ion storage capability|
|作 者||; Qujiang Sun, HongLiang Wu,Hai Ming, Lianshan Sun, Lin Zhou, Chunli Wang, Xuxu Wang, Limin Wang, Jun Ming, Chunli Wang|
|发表年度||MAR 14 2019|
|刊物名称||JOURNAL OF MATERIALS CHEMISTRY A|
|卷、期、页码||7; 10; 5677-5684|
Pursuing higher energy density and longer lifespan of alkaline ion batteries (i.e., Li+ and Na+) to satisfy the growing demand in the energy market remains challenging. One of the limitations is the graphite anode, which has limited lithium storage capability and is incapable of storing sodium. Herein, a unique metal sulfide-based anode with high capacity and extremely long cycle life was presented; a new concept of a self-breathable structure and hetero-atom doping features was introduced. In detail, a new aurilave-like structure composed of a metal sulfide shell and a nitrogen-doped carbon framework (e.g., N-C@MoS2) was constructed using natural spores as the template. Benefiting from the uniqueness of the bio-inspired structure and components, N-C@MoS2 exhibited extraordinary alkaline-ion storage performance with respect to rate capability, initial coulombic efficiency and cycle life, which were superior to those of most MoS2-based anodes reported before. We found that the inside of the aurilave structure served as a dynamic electrolyte reservoir, while the N-C skeleton acted as a highway for ion/electron transport, thereby leading to a deeper and faster conversion reaction rate. We hope that the bio-inspired architectures and components can be widely applied to design materials for other applications.