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Antimony Anchored with Nitrogen-Doping Porous Carbon as a High-Performance Anode Material for Na-Ion Batteries
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-07-31 00:00:00 , DOI: 10.1021/acsami.7b07964 Tianjing Wu 1 , Hongshuai Hou 1 , Chenyang Zhang 1 , Peng Ge 1 , Zhaodong Huang 1 , Mingjun Jing 2 , Xiaoqing Qiu 1 , Xiaobo Ji 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-07-31 00:00:00 , DOI: 10.1021/acsami.7b07964 Tianjing Wu 1 , Hongshuai Hou 1 , Chenyang Zhang 1 , Peng Ge 1 , Zhaodong Huang 1 , Mingjun Jing 2 , Xiaoqing Qiu 1 , Xiaobo Ji 1
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Antimony represents a class of unique functional materials in sodium-ion batteries with high theoretical capacity (660 mA h g–1). The utilization of carbonaceous materials as a buffer layer has been considered an effective approach to alleviate rapid capacity fading. Herein, the antimony/nitrogen-doping porous carbon (Sb/NPC) composite with polyaniline nanosheets as a carbon source has been successfully achieved. In addition, our strategy involves three processes, a tunable organic polyreaction, a thermal annealing process, and a cost-effective reduction reaction. The as-prepared Sb/NPC electrode demonstrates a great reversible capacity of 529.6 mA h g–1 and an outstanding cycling stability with 97.2% capacity retention after 100 cycles at 100 mA g–1. Even at 1600 mA g–1, a superior rate capacity of 357 mA h g–1 can be retained. Those remarkable electrochemical performances can be ascribed to the introduction of a hierarchical porous NPC material to which tiny Sb nanoparticles of about 30 nm were well-wrapped to buffer volume expansion and improve conductivity.
中文翻译：
掺氮多孔碳作为钠离子电池高性能阳极材料固定的锑
锑代表了钠离子电池中一类独特的功能材料，具有很高的理论容量（660 mA hg –1）。利用碳质材料作为缓冲层已被认为是减轻快速容量衰减的有效方法。在此，已经成功实现了以聚苯胺纳米片作为碳源的锑/氮掺杂多孔碳（Sb / NPC）复合材料。此外，我们的策略涉及三个过程：可调节的有机多反应，热退火过程和具有成本效益的还原反应。所制备的Sb / NPC电极显示出529.6 mA hg –1的巨大可逆容量和出色的循环稳定性，在100 mA g –1下100次循环后容量保持率达97.2％。即使在1600 mA g –1的情况下，也可以保留357 mA hg –1的超高倍率容量。那些出色的电化学性能可以归因于分级多孔NPC材料的引入，在该材料中包裹了大约30 nm的微小Sb纳米粒子，以缓冲体积膨胀并提高电导率。
更新日期：2017-07-31
中文翻译：
掺氮多孔碳作为钠离子电池高性能阳极材料固定的锑
锑代表了钠离子电池中一类独特的功能材料，具有很高的理论容量（660 mA hg –1）。利用碳质材料作为缓冲层已被认为是减轻快速容量衰减的有效方法。在此，已经成功实现了以聚苯胺纳米片作为碳源的锑/氮掺杂多孔碳（Sb / NPC）复合材料。此外，我们的策略涉及三个过程：可调节的有机多反应，热退火过程和具有成本效益的还原反应。所制备的Sb / NPC电极显示出529.6 mA hg –1的巨大可逆容量和出色的循环稳定性，在100 mA g –1下100次循环后容量保持率达97.2％。即使在1600 mA g –1的情况下，也可以保留357 mA hg –1的超高倍率容量。那些出色的电化学性能可以归因于分级多孔NPC材料的引入，在该材料中包裹了大约30 nm的微小Sb纳米粒子，以缓冲体积膨胀并提高电导率。
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