New Insight on Sn-Doped Carbon Black as an “Active" Conductive Additive for Lithium-Ion Batteries DOI
Hyeon-Su Yang, Seonghee Kim, Jun Kang

et al.

Published: Jan. 1, 2023

Carbon black is commonly used as a conductive additive for lithium-ion battery (LIB) electrodes because of its high electrical conductivity and cost-effectiveness. While the traditional additives primarily serve role ensuring conductivity, our research inherent Sn nanoparticles, which has widely reported to form alloy reaction with lithium, in carbon matrix (Sn@C), enhance lithium storage capacity. This approach combines an active material first Sn@C “active” LIBs. synthesized via plasma engineering, resulting where nanoparticles are uniformly dispersed within matrix. When Sn@C-500, annealed at 500 °C, LIB half-cell graphite anode, approximately 10% higher reversible capacity achieved compared that commercial (Super P). Furthermore, electrochemical impedance spectroscopy measurements reveal Sn@C-500 exhibits lower internal resistance than Super P, confirming effective electrode. study presents novel open up new possibilities applying Sn-doped improve performance anodes

Language: Английский

“Mobius Strip-Like” Fesn Alloy: A Novel Highly-Distorted 3d Hierarchical Porous Anode for Ultrafast and Stable Li Storage DOI
Huanyan Liu, Jizhou Zhang, Xiang Peng

et al.

Published: Jan. 1, 2023

Tin provides high specific capacity (994 mAh g-1) by forming Li4.4Sn in lithium-ion batteries (LIBs) yet exhibits poor electrochemical stability. Inspired the miraculous “Mobius strip” with superior stress-relieving effect developable surface, herein, through a facile dealloying and sol-gel pyrolysis method, strip-like” highly-distorted C-wrapped 3D hierarchical porous FeSn integrated anode (HD-3D-HP FeSn@C) is initially designed utilized to relieve mechanical stress Sn-based generated during lithiation-delithiation. The anodes are characteristic of bimodal pore-size distribution composed microporous architecture homogenous nanopores on pore walls which contribute effective relief rapid mass transfer. Moreover, wrapped-C great significance for maintaining structure improving stability solid electrolyte interface (SEI). Therefore, HD-3D-HP FeSn@C display ultrafast Li storage properties rate capability (0.23 cm-2 at 10 mA cm-2) good cycling (68.89% retention after 1000 cycles 1 cm-2, only ~0.03% decay per cycle). This work novel universal design philosophy towards high-performance LIBs, may shed light evolution other secondary beyond alkali metal batteries.

Language: Английский

Citations

0
Sn/Sno2@C Heterostructures Derived from in Situ Growth of Coordination Polymers on Graphene for High-Performance Lithium-Ion Batteries DOI
Ke Cao,

Zheng Liu,

Guanwen Wang

et al.

Published: Jan. 1, 2023

Language: Английский

Citations

0
New Insight on Sn-Doped Carbon Black as an “Active" Conductive Additive for Lithium-Ion Batteries DOI
Hyeon-Su Yang, Seonghee Kim, Jun Kang

et al.

Published: Jan. 1, 2023

Carbon black is commonly used as a conductive additive for lithium-ion battery (LIB) electrodes because of its high electrical conductivity and cost-effectiveness. While the traditional additives primarily serve role ensuring conductivity, our research inherent Sn nanoparticles, which has widely reported to form alloy reaction with lithium, in carbon matrix (Sn@C), enhance lithium storage capacity. This approach combines an active material first Sn@C “active” LIBs. synthesized via plasma engineering, resulting where nanoparticles are uniformly dispersed within matrix. When Sn@C-500, annealed at 500 °C, LIB half-cell graphite anode, approximately 10% higher reversible capacity achieved compared that commercial (Super P). Furthermore, electrochemical impedance spectroscopy measurements reveal Sn@C-500 exhibits lower internal resistance than Super P, confirming effective electrode. study presents novel open up new possibilities applying Sn-doped improve performance anodes

Language: Английский

Citations

0