文献类型：期刊文献

英文题名：Self-Volatilization Approach to Mesoporous Carbon Nanotube/Silver Nanoparticle Hybrids: The Role of Silver in Boosting Li Ion Storage

作者：Jiang, Hao[1];Zhang, Haoxuan[1];Fu, Yao[1];Guo, Shaojun[4,5];Hu, Yanjie[1];Zhang, Ling[1];Liu, Yu[2,3];Liu, Honglai[2,3];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Dept Chem Engn, Shanghai 200237, Peoples R China;[4]Peking Univ, Dept Energy & Resources Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China;[5]Peking Univ, Coll Engn, Beijing Key Lab Theory & Technol Adv Battery Mat, Beijing 100871, Peoples R China

年份：2016

卷号：10

期号：1

起止页码：1648

外文期刊名：ACS NANO

收录：;EI(收录号：20164102893151);WOS:【SCI-EXPANDED(收录号:WOS:000369115800184)】；

基金：This work was supported by the National Natural Science Foundation of China (21236003, 21522602, 21322607, 21506051), the Shanghai Shuguang Scholars Program (13SG31), the Program for Professor Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the Research Project of Chinese Ministry of Education (113026A), Fundamental Research Funds for the Central Universities, the start-up funding from Peking University, and Young Thousand Talented Program.

语种：英文

外文关键词：Ag nanoparticle; carbon nanotube; Coulombic efficiency; solid electrolyte interphase; lithium ion battery

摘要：One of the biggest challenging issues of carbon nanomaterials for Li ion batteries (LIBs) is that they show low initial Coulombic efficiency (CE), leading to a limited specific capacity. Herein, we demonstrate a simple template self-volatilization strategy for in situ synthesis of mesoporous carbon nanotube/Ag nanoparticle (NP) hybrids (Ag-MCNTs) to boost the LIBs' performance. The key concept of Ag-MCNTs for enhancing LIBs is that a small trace of Ag NPs on MCNTS can greatly restrict the formation of a thicker solid electrolyte interphase film, which has been well verified by both transmission electron microscopy results and quantum density functional theory calculations, leading to the highest initial CE in all the reported carbon nanomaterials. This uncovered property of Ag NPs from Ag-MCNTs makes them exhibit a very high reversible capacity of 1637 mAh g(-1) after 400 discharge/charge cycles at 100 mA g(-1), approximately 5 times higher than the theoretical value of a graphite anode (372 mAh g(-1)), excellent rate capability, and long cycle life.