Hydrothermal Synthesis of Al/Cr-doped V6O13 as Cathode Material for Lithium-ion Battery
Hydrothermal Synthesis of Al/Cr-doped V6O13 as Cathode Material for Lithium-ion Battery
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DOI：
10.1051/matecconf/20178801006
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Qinqin Yuan;Z. Zou
中科院分区：
文献类型：
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作者：
Qinqin Yuan;Z. Zou
以C 2 H 2 O 4 ·2H 2 O、V 2 O 5 、Al(NO 3 ) 3 ·9H 2 O和Cr(NO 3 ) 3 ·9H 2 O为原料，通过水热法合成了纯V 6 O 13 和Al/Cr掺杂的V 6 O 13 。通过XRD、SEM、EDS对产物进行了表征。掺杂被证明是提高样品放电比容量和循环性能的有效方法。掺杂样品的电化学性能优于纯V 6 O 13 ，样品0.02和0.06的首次放电比容量分别比纯V 6 O 13 样品（241mAh/g）大311mAh/g和337mAh/g。 0.00、0.02、0.06样品100次循环后容量保持率分别为32.0%、44.69%、28.78%。电化学性能的提高源于导电性的增强，并通过每个单元规则排列的堆叠区域粘附在一起。
Pure V 6 O 13 and Al/Cr-doped V 6 O 13 were synthesized via a hydrothermal route using C 2 H 2 O 4 ·2H 2 O, V 2 O 5 , Al(NO 3 ) 3 ·9H 2 O and Cr(NO 3 ) 3 ·9H 2 O as raw materials. The products were characterized by XRD, SEM, EDS. Doping proven to be an effective method to improve the samples discharge specific capacity and cycle performance. Doping samples electrochemical performance were better than pure V 6 O 13 , the initial discharge specific capacity of sample 0.02 and 0.06 were 311mAh/g and 337mAh/g larger than pure V 6 O 13 sample (241 mAh/g). The capacity retention of samples 0.00, 0.02, 0.06 was 32.0%, 44.69%, 28.78% after 100 cycles, respectively. The increased electrochemical performance originated from the enhanced of electrical conductivity and adhered together by stacking region in an regular arrangement with every unit.