Determining Realistic Electrochemical Stability Windows of Electrolytes for Electrical Double‐Layer Capacitors,Batteries & Supercaps

当前位置： X-MOL 学术 › Batteries Supercaps › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Determining Realistic Electrochemical Stability Windows of Electrolytes for Electrical Double‐Layer Capacitors
Batteries & Supercaps ( IF 5.1 ) Pub Date : 2020-03-10 , DOI: 10.1002/batt.202000009
Peter Ruschhaupt _{1,

2} , Sebastian Pohlmann ₃ , Alberto Varzi _{1,

2} , Stefano Passerini _{1,

2}

Affiliation

Electrical double‐layer capacitors are a key building block for energy storage applications, including renewable energies, wherever high power is needed. Most research on electrolytes in this field focuses on improving their electrochemical stability. This improves the energy density as it scales with the square of the maximum operative voltage. However, the decisive criteria to assess the electrochemical stability window of electrolytes are unclear. Consequently, new electrolyte candidates are often presented with unrealistic high stability windows and their performance is difficult to compare. In this Minireview, an overview of electrochemical stability window determination methods is presented. It is argued that constant voltage lifetime tests are needed to confirm the electrochemical stability window determined by any other method. Also, the importance of using realistic working electrodes, reference electrodes, and cycling protocols are highlighted. Finally, an industrial perspective on what is necessary to yield results relevant to applications is given.

中文翻译：

确定用于双层电容器的电解质的实际电化学稳定性窗口

双层电容器是需要高功率的储能应用（包括可再生能源）的关键组成部分。该领域中有关电解质的大多数研究都集中在提高其电化学稳定性上。当能量密度与最大工作电压的平方成比例时，这将提高能量密度。然而，评估电解质的电化学稳定性窗口的决定性标准尚不清楚。因此，新的电解质候选物经常呈现出不切实际的高稳定性窗口，并且它们的性能难以比较。在此Minireview中，概述了电化学稳定性窗口确定方法。有人认为需要恒压寿命测试来确认通过任何其他方法确定的电化学稳定性窗口。也，强调了使用实际工作电极，参比电极和循环方案的重要性。最后，给出了产生与应用相关的结果所需的工业观点。

更新日期：2020-03-10

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文