@article{34182,
  author = {Yan Feng and Shuming Dou and Yuzhen Wei and Yuliang Zhang and Xiangyun Song and Xifei Li and Vincent S Battaglia},
  title = {Preparation and Capacity-Fading Investigation of Polymer-Derived Silicon Carbonitride Anode for Lithium-Ion Battery},
  abstract = {<p><span>Polymer-derived silicon carbonitride (SiCN) materials have been synthesized via pyrolyzing from five poly(silylcarbondiimide)s with different contents of carbon (labeled as 1–5#). The morphological and structural measurements show that the SiCN materials are mixtures of nanocrystals of SiC, Si</span><span>3</span><span>N</span><span>4</span><span>, and graphite. The SiCN materials have been used as anodes for lithium-ion batteries. Among the five polymer-derived SiCN materials, 5#SiCN, derived from dichloromethylvinylsilane and di-</span><em>n</em><span>-octyldichlorosilane, has the best cycle stability and a high-rate performance at the low cutoff voltage of 0.01–1.0 V. In lithium-ion half-cells, the specific delithiation capacity of 5#SiCN anode still remains at 826.7 mA h g</span><span>–1</span><span>&nbsp;after 100 charge/discharge cycles; it can even deliver the capacity above 550 mA h g</span><span>–1</span><span>&nbsp;at high current densities of 1.6 and 2 A g</span><span>–1</span><span>. In lithium-ion full cells, 5#SiCN anode works well with LiNi</span><span>0.6</span><span>Co</span><span>0.2</span><span>Mn</span><span>0.2</span><span>O</span><span>2</span><span>&nbsp;commercial cathode. The outstanding electrochemical performance of 5#SiCN anode is attributed to two factors: (1) the formation of a stable and compact solid electrolyte interface layer on the anode surface anode, which protects the electrode from cracking during the charge/discharge cycle; and (2) a large amount of carbon component and the less Si</span><span>3</span><span>N</span><span>4</span><span>&nbsp;phase in the 5#SiCN structure, which provides an electrochemical reactive and conductive environment in the SiCN structure, benefit the lithiation/delithiation process. In addition, we explore the reason for the capacity fading of these SiCN anodes.</span></p>},
  year = {2017},
  journal = {ACS Omega},
  volume = {2},
  pages = {8075 - 8085},
  month = {11/2017},
  issn = {2470-1343},
  doi = {10.1021/acsomega.7b0146210.1021/acsomega.7b01462.s001},
  language = {eng},
}