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论文类型：期刊论文

发表时间：2016-02-15

发表刊物：CHEMICAL ENGINEERING JOURNAL

收录刊物：SCIE、EI

卷号：286

页面范围：632-639

ISSN号：1385-8947

关键字：Carbon materials; Energy storage and conversion; Carbon shell; Petroleum asphalt; Lithium-ion battery

摘要：Petroleum asphalt based ultrathin hollow carbon shell (PACS) was prepared via a facile template-assisted method. As the anode material of lithium-ion batteries, PACS exhibits high reversible capacity, excellent cycling stability, and superior rate performance. A high reversible capacity of 334 mA h g(-1) and 90% kept of the theoretical capacity can still be maintained in PACS at a current density of 1 A g(-1) even after 1000 cycles, which is ascribed to the unique hollow structure, ultrathin porous shells (4.7 nm), the doped nitrogen atoms, and high level of disorder degree. Meanwhile, the present study paves a milestone for the high-valued utilization of petroleum asphalt and other kinds of heavy oil. (C) 2015 Elsevier B.V. All rights reserved.