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离子导体载流子输运与存储的界面调控

郭向欣, 李 泓

郭向欣, 李 泓. 离子导体载流子输运与存储的界面调控[J]. 物理, 2011, 40(10): 648-655.
引用本文: 郭向欣, 李 泓. 离子导体载流子输运与存储的界面调控[J]. 物理, 2011, 40(10): 648-655.
Interface manipulation of carrier transport and storage in ionic conductors[J]. PHYSICS, 2011, 40(10): 648-655.
Citation: Interface manipulation of carrier transport and storage in ionic conductors[J]. PHYSICS, 2011, 40(10): 648-655.

离子导体载流子输运与存储的界面调控

Interface manipulation of carrier transport and storage in ionic conductors

  • 摘要: 离子导电材料既可以是载流子主要为离子的纯离子导体,也可以是载流子同时包括离子和电子的混合离子导体.这两类材料是电化学能量转换与储存、化学传感以及选择性透过膜等器件的关键材料.在这些器件中,均存在电极与电解质、颗粒与颗粒、不同晶粒之间的二维或三维的异质结界面.因此,离子与电子在异质结中的输运性质对器件性能有重要的影响.但异质结的组成与结构如何影响载流子输运与存储的科学机理还远未得到澄清.与不规则的实际应用的粉体材料相比,二维离子导电异质结对于揭示界面作用机制具有显著的优势,这方面的研究刚刚起步.文章将着重介绍二维离子导电异质结的研究背景与研究进展、已经观察到的典型界面效应、载流子输运与存储特性,并对利用界面效应对材料的离子输运与存储的调控作简要评述.
    Abstract: Ionically conducting materials may be purely ionic conducting and may also be mixed conducting with both ions and electrons.They are crucial materials for electrochemical devices for energy conversion and storage,chemical sensors,selective permeable membranes, and so on.In these devices, there exist two-dimensional or three-dimensional hetero-interfaces between the electrode and electrolyte,and between the different particles or grains.Thus,the ionic and electronic transport properties of these hetero-interfaces have a significant influence on device performance.However, it is far from clear how the interfaces affect these properties.In this context, two-dimensional heterostructures are advantageous for clarifying the mechanism of interface effects due to our ability to control the interfacial spacing and crystalline orientation.Such research is still in its infancy.This article will first introduce the background and developments of this field,then present some typical examples of the interfacial effects on carrier transport and storage which have been observed experimentally.The prospects for ion transport and storage by interface manipulation will also be briefly reviewed.
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出版历程
  • 发布日期:  2011-10-19

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