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Preparation and electrochemical performance of nitrogen-doped carbon-coated BiMnO anode materials for lithium-ion batteries 被引量:4
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作者 Jing ZHAN chang-fan xu +1 位作者 Yi-yu LONG Qi-hou LI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2020年第8期2188-2199,共12页
To inhibit rapid capacity attenuation of Bi2Mn4O10 anode material in high-energy lithium-ion batteries,a novel high-purity anode composite material Bi2Mn4O10/ECP-N(ECP-N:N-doped Ketjen black)was prepared via an uncomp... To inhibit rapid capacity attenuation of Bi2Mn4O10 anode material in high-energy lithium-ion batteries,a novel high-purity anode composite material Bi2Mn4O10/ECP-N(ECP-N:N-doped Ketjen black)was prepared via an uncomplicated ball milling method.The as-synthesized Bi2Mn4O10/ECP-N composite demonstrated a great reversible specific capacity of 576.2 m A·h/g after 100 cycles at 0.2 C with a large capacity retention of 75%.However,the capacity retention of individual Bi2Mn4O10 was only 27%.Even at 3 C,a superior rate capacity of 236.1 m A·h/g was retained.Those remarkable electrochemical performances could give the credit to the introduction of ECP-N,which not only effectively improves the specific surface area to buffer volume expansion and enhances conductivity and wettability of composites but also accelerates the ion transfer and the reversible conversion reaction. 展开更多
关键词 Bi2Mn4O10 nanoparticles N-doped Ketjen black rate capability lithium-ion batteries
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