氮磷共掺杂碳微球的制备及储钠行为研究
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- 英文论文题名：Preparation of N- and P co-doped carbon microspheres and their electrochemical behavior as anode in sodium-ion batteries
- 论文作者：王小华 ; 王志广 ; 沈进冉 ; 李悦明
- 英文论文作者：Xiaohua Wang ; Zhiguang Wang ; Jinran Shen ; Yueming Li ; State Key Laboratory of Metastable Materials Science and Technology ; College of Materials Science and Engineering ; Yanshan University
- 年：2016
- 作者机构：亚稳材料制备技术与科学国家重点实验室燕山大学材料科学与工程学院;
- 论文关键词：共掺杂 ; 碳微球 ; 钠离子电池 ; 负极
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十分会：化学电源
- 语种：中文
- 分类号：TM912;TQ127.11
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十分会 ; 化学电源
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：139k
- 原文格式：D
- 会议级别：全国
摘要
钠资源来源丰富,价格低廉,钠离子电池被认为是替代锂离子电池作为大规模可再生储能单元的首选,发展高性能负极材料的是钠离子电池的亟待解决的问题之一。[1,2]我们通过水热碳化,并以磷酸氢二铵为掺杂剂制备了氮磷共掺杂的碳微球并研究了其储纳行为。氮磷共掺杂微球材料,作为负极钠离子电池所制备的材料表现出高比容量、极好的循环稳定性以及优良的倍率性能。在0.1 Ag~(-1)电流密度下下,氮磷共掺杂碳微球具有305 mAh g~(-1)的放电容量,即使在5 Ag~(-1)下仍能释放出136 mAh g~(-1)的容量,表明氮磷共掺杂碳微球在钠离子电池具有良好的潜在应用前景。[1]
Sodium-ion batteries are considered an good alternative to lithium-ion batteries for large-scale renewable energy storage units due to their low cost and the abundance of sodium resources on the earth.However,the absence of a suitable negative electrode material hinders their development.In this contribution,we report the preparation of nitrogen and phosphorous co-doped carbon microspheres through a hydrothermal process followed by heat treatment in presence of(NH_4)_2HPO_4 and investigate their electrochemical performance as anode in sodium-ion batteries.Benefiting from N,P co-doping,the obtained material demonstrates high specific capacity,excellent cycle stability and good rate performance.The as prepared N,P co-doped carbon microspheres can deliver a reversible capacity of 305 mAh g~(-1) at 0.1 A g~(-1) and a capacity of 136 mAh g~(-1) at 5 A g~(-1).This superior sodium storage performance of N,P co-doped carbon makes it a promising low-cost anode candidate for sodium-ion batteries.
Sodium-ion batteries are considered an good alternative to lithium-ion batteries for large-scale renewable energy storage units due to their low cost and the abundance of sodium resources on the earth.However,the absence of a suitable negative electrode material hinders their development.In this contribution,we report the preparation of nitrogen and phosphorous co-doped carbon microspheres through a hydrothermal process followed by heat treatment in presence of(NH_4)_2HPO_4 and investigate their electrochemical performance as anode in sodium-ion batteries.Benefiting from N,P co-doping,the obtained material demonstrates high specific capacity,excellent cycle stability and good rate performance.The as prepared N,P co-doped carbon microspheres can deliver a reversible capacity of 305 mAh g~(-1) at 0.1 A g~(-1) and a capacity of 136 mAh g~(-1) at 5 A g~(-1).This superior sodium storage performance of N,P co-doped carbon makes it a promising low-cost anode candidate for sodium-ion batteries.
引文
[1]Yueming Li,Zhiguang Wang,Linlin Li,Shengjie Peng,Long Zhang,Madhavi Srinivasan,Seeram Ramakrishna.Carbon.2016,99:556-563.
[2]X.Gong,S.S.Liu,C.Y.Ouyang,P.Strasser,R.Z.Yang.ACS Catal.2015,5(2):920-927.
[2]X.Gong,S.S.Liu,C.Y.Ouyang,P.Strasser,R.Z.Yang.ACS Catal.2015,5(2):920-927.