An Overview on the Development of Electrochemical Capacitors and Batteries – Part I

Author(s):Show less -

VITOR L. MARTINS ^[1] ; HERBERT R. NEVES ; IVONNE E. MONJE ^[3] ; MARINA M. LEITE ^[4] ; PAULO F.M. DE OLIVEIRA ^[5] ; RODOLFO M. ANTONIASSI ^[6] ; SUSANA CHAUQUE ^[7] ; WILLIAM G. MORAIS ^[8] ; EDUARDO C. MELO ^[9] ; THIAGO T. OBANA ^[10] ; BRENO L. SOUZA ^[11] ; ROBERTO M. TORRESI ^[12]

Affiliation:Show less -

^[1] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[3] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[4] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[5] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[6] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[7] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[8] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[9] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[10] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[11] Universidade de São Paulo. Depto. Química Fundamental - Brasil

^[12] Universidade de São Paulo. Depto. Química Fundamental - Brasil

• Document type: Journal article
• Source: Anais da Academia Brasileira de Ciências; v. 92, n. 2 2020-07-06.

Abstract

Abstract The Nobel Prize in Chemistry 2019 recognized the importance of Li-ion batteries and the revolution they allowed to happen during the past three decades. They are part of a broader class of electrochemical energy storage devices, which are employed where electrical energy is needed on demand and so, the electrochemical energy is converted into electrical energy as required by the application. This opens a variety of possibilities on the utilization of energy storage devices, beyond the well-known mobile applications, assisting on the decarbonization of energy production and distribution. In this series of reviews in two parts, two main types of energy storage devices will be explored: electrochemical capacitors (part I) and rechargeable batteries (part II). More specifically, we will discuss about the materials used in each type of device, their main role in the energy storage process, their advantages and drawbacks and, especially, strategies to improve their performance. In the present part, electrochemical capacitors will be addressed. Their fundamental difference to batteries is explained considering the process at the electrode/electrolyte surface and the impact in performance. Materials used in electrochemical capacitors, including double layer capacitors and pseudocapacitive materials will be reviewed, highlighting the importance of electrolytes. As an important part of these strategies, synthetic routes for the production of nanoparticles will also be approached (part I). (AU)

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