Silicon-carbon anode with high interfacial stability by a facile thermal reaction involving alkaline nitrogenous carbon source for lithium ion batteries

Tian, Kun; Song, Zhicheng; Zhang, Qiang; Guan, Chaohui; Lu, Minghua; Zhang, Minshu; Wang, Dong; Li, Xiaodan

doi:10.1016/j.est.2023.108401

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Cited by 13 publications

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“…Researchers also found that downsizing the Si particles to nanometers helps suppress particle pulverization, but the considerable surface area of nanosized Si leads to abundant side reactions, thus decreasing the Coulombic efficiency [19] . Carbon is widely used as a coating material on Si to improve its electrical conductivity and separate Si from the electrolyte [16,20,21] . However, the highly conductive carbon is electrochemically active, which cannot prevent side reactions.…”

Section: Introductionmentioning

confidence: 99%

Calcium silicate composited nano-Si anode with low expansion and high performance for lithium-ion batteries

Guo,

Zhou,

Peng

et al. 2023

Energy Materials and Devices

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Specific capacity (mAh g −1 ) Cycle number porous silicon calcium silicate coated silicon 0.05C 1C 20 40 60 80 100 Coulombic efficiency (%) Calcium silicate Porous siliconCalcium silicate/nano-silicon composites (pSi@CaO) is synthesized via transforming the SiO 2 in disproportionated SiO into calcium silicate. The bulk distributed calcium silicate in pSi@CaO can effectively suppress the electrode expansion and achieve excellent electrochemical stability as anode in lithium-ion battery.

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