高性能双功能催化剂在先进的锌空电池中的研究及电池优化
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- 英文论文题名：Advanced zinc-air batteries based on high-performance bi-functional electrocatalysts Title and battery optimization
- 论文作者：徐能能 ; 乔锦丽 ; 李雪梅 ; 李浩然
- 英文论文作者：Nengneng Xu ; Jinli Qiao ; Xuemei Li ; Haorang Li ; College of Environmental Science and Engineering ; DonghuaUniverstiy
- 年：2016
- 作者机构：东华大学环境学院;
- 论文关键词：双功能催化剂 ; 空气电极 ; 锌空电池 ; 柔性锌空电池
- 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：O643.36;TM911.41
- 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：273k
- 原文格式：D
- 会议级别：全国
摘要
一次或可充式Zn-air电池(包括柔性锌空电池)由于比能量和功率密度高、安全性能好和经济可行性成为理想的能源存储设备;引起了人们的广泛关注。~([1])对于可充式的锌空电池来说,高性能的双功能催化剂在充放电过程中就显得尤为重要。为此,我们开发了La_2O_3/Co_3O_4/MnO_2-CNTs作为空气电极催化剂。该催化剂在测试过程中表现出优异的性能。实验采用自组装的锌空电池模型测试:其发电功率最大高达295mW/cm~2;比能量密度高达820 mAh/g~1;~([2])不仅如此,其充放电性能也十分稳定;优于目前报道的锌空电池性能。目前,柔性锌空电池由于体积小,重量轻以及可用于智能家居等领域的优点逐步成为研究的热点。我们以碱性膜为电解质制备而成的柔性锌空电池,其发电功率高达295 mW/cm2,充放电循环2小时。我们通过合理的控制催化剂形貌实现催化剂的高活性,采用独特的电池测试模型实现锌空电池的优异性能,除此之外,柔性锌空电池也取得了突破性发展。这些基础性工作将为锌空电池的发展提供一定的理论基础和数据支持。
Primary and rechargeable Zn-air batteries could be ideal energy storage devices with high energy and power density,high safety and economic viability.When these catalysts are integrated into a practical primary Zn-air battery,a high open circuit voltage of 1.5V is achieved along with a high discharge peak power density of 295 mW cm~(-2).The specific capacity normalized to the mass of consumed Zn is 821 mAh g~(-1).More specifically,the electrochemically rechargeable Zn-air battery incorporating by this bifunctional catalyst exhibits an unprecedented small charge-discharge voltage polarization,high reversibility and high stability.Furthermore,a flexible,rechargeable Zn-air battery as a wholly solid-state energy storage device,and exhibiting good peak power density and decent stability.
Primary and rechargeable Zn-air batteries could be ideal energy storage devices with high energy and power density,high safety and economic viability.When these catalysts are integrated into a practical primary Zn-air battery,a high open circuit voltage of 1.5V is achieved along with a high discharge peak power density of 295 mW cm~(-2).The specific capacity normalized to the mass of consumed Zn is 821 mAh g~(-1).More specifically,the electrochemically rechargeable Zn-air battery incorporating by this bifunctional catalyst exhibits an unprecedented small charge-discharge voltage polarization,high reversibility and high stability.Furthermore,a flexible,rechargeable Zn-air battery as a wholly solid-state energy storage device,and exhibiting good peak power density and decent stability.
引文
[1]Armand,M;Tarascon,J.M.Building better batteries.Nature.2008;451:652.
[2]Chen,Z;Yu,A.P;Higgins,D;Li,H,Wang,HJ;Chen,Z.W.Nano Lett 2012;12:194.
[2]Chen,Z;Yu,A.P;Higgins,D;Li,H,Wang,HJ;Chen,Z.W.Nano Lett 2012;12:194.