title: Core-Shell Coating Silicon Anode Interfaces with Coordination Complex for Stable Lithium-Ion Batteries.
abstract: In situ core-shell coating was used to improve the electrochemical performance of Si-based anodes with polypyrrole-Fe coordination complex. The vast functional groups in the organometallic coordination complex easily formed hydrogen bonds when in situ modifying commercial Si nanoparticles. The incorporation of polypyrrole-Fe resulted in the conformal conductive coating surrounding each Si nanoparticle, not only providing good electrical connection to the particles but also promoting the formation of a stable solid-electrolyte-interface layer on the Si electrode surface, enhancing the cycling properties. As an anode material for Li-ion batteries, modified silicon powders exhibited high reversible capacity (3567 mAh/g at 0.3 A/g), good rate property (549.12 mAh/g at 12 A/g), and excellent cycling performance (reversible capacity of 1500 mAh/g after 800 cycles at 1.2 A/g). The constructed novel concept of core-shell coating Si particles presented a promising route for facile and large-scale production of Si-based anodes for extremely durable Li-ion batteries, which provided a wide range of applications in the field of energy storage of the renewable energy derived from the solar energy, hydropower, tidal energy, and geothermal heat.
authors: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , No. 1 Shizi Street, Suzhou 215006, China.
authors: Jinqiu
authors: J
authors: Zhou
authors: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , No. 1 Shizi Street, Suzhou 215006, China.
authors: Tao
authors: T
authors: Qian
authors: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , No. 1 Shizi Street, Suzhou 215006, China.
authors: Mengfan
authors: M
authors: Wang
authors: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , No. 1 Shizi Street, Suzhou 215006, China.
authors: Na
authors: N
authors: Xu
authors: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , No. 1 Shizi Street, Suzhou 215006, China.
authors: Qi
authors: Q
authors: Zhang
authors: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , No. 1 Shizi Street, Suzhou 215006, China.
authors: Qun
authors: Q
authors: Li
authors: College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , No. 1 Shizi Street, Suzhou 215006, China.
authors: Chenglin
authors: C
authors: Yan
keywords: PPy-Fe; coordination complex; cycling performance; lithium-ion battery; silicon