Understanding and Calibration of Charge Storage Mechanism in Cyclic Voltammetry Curves

DOI Web Site Web Site 被引用文献2件
  • Xiangjun Pu
    Key Laboratory of Hydraulic Machinery Transients Ministry of Education School of Power and Mechanical Engineering Wuhan University Wuhan China
  • Dong Zhao
    Key Laboratory of Hydraulic Machinery Transients Ministry of Education School of Power and Mechanical Engineering Wuhan University Wuhan China
  • Chenglong Fu
    Key Laboratory of Hydraulic Machinery Transients Ministry of Education School of Power and Mechanical Engineering Wuhan University Wuhan China
  • Zhongxue Chen
    Key Laboratory of Hydraulic Machinery Transients Ministry of Education School of Power and Mechanical Engineering Wuhan University Wuhan China
  • Shunan Cao
    Key Laboratory of Hydraulic Machinery Transients Ministry of Education School of Power and Mechanical Engineering Wuhan University Wuhan China
  • Chunsheng Wang
    Department of Chemical and Biomolecular Engineering University of Maryland College Park MD USA
  • Yuliang Cao
    Hubei Key Laboratory of Electrochemical Power Sources College of Chemistry and Molecular Sciences Wuhan University Wuhan China

書誌事項

公開日
2021-08-21
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/anie.202104167
公開者
Wiley

この論文をさがす

説明

<jats:title>Abstract</jats:title><jats:p>Noticeable pseudo‐capacitance behavior out of charge storage mechanism (CSM) has attracted intensive studies because it can provide both high energy density and large output power. Although cyclic voltammetry is recognized as the feasible electrochemical technique to determine it quantitatively in the previous works, the results are inferior due to uncertainty in the definitions and application conditions. Herein, three successive treatments, including de‐polarization, de‐residual and de‐background, as well as a non‐linear fitting algorithm are employed for the first time to calibrate the different CSM contribution of three typical cathode materials, LiFePO<jats:sub>4</jats:sub>, LiMn<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> and Na<jats:sub>4</jats:sub>Fe<jats:sub>3</jats:sub>(PO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>P<jats:sub>2</jats:sub>O<jats:sub>7</jats:sub>, and achieve well‐separated physical capacitance, pseudo‐capacitance and diffusive contributions to the total capacity. This work can eliminate misunderstanding concepts and correct ambiguous results of the pseudo‐capacitance contribution and recognize the essence of CSM in electrode materials.</jats:p>

収録刊行物

被引用文献 (2)*注記

もっと見る

問題の指摘

ページトップへ