Publication
Electric vehicles batteries: Examining knowledge tracks through patented and published technologies
| Summary: | Climate change and technological advances are driving the rise of electric vehicles (EVs), with batteries at their core, influencing cost, range, charging time, and lifespan. As sustainable EV battery development is vital for widespread adoption, investigating innovation in this field allows us to assess the landscape of battery-related inventions. This study uses a two-fold approach: (1) patent analysis and (2) bibliometric methods, exploring battery developments from 2000 to 2022. It contributes to the literature by comparing two different approaches to innovation: to patent it and protect it or to publish it and disseminate it. Using data from PATSTAT and Web of Science, the study analyses around 20 000 international patent families and more than 20 000 publications. We find continuous growth in the innovation output, particularly from 2010 onwards and identify productive countries, notably Asian nations, as leading patent and scientific research contributors. By comparing the G7 and BRICS outputs, we find that the first group leads in patent applications, while the second recently leads in scientific studies. An analysis of keywords uncovers an evolutionary shift in battery chemistries, for example from lead acid to Li-ion. We also identify a shift towards the integration of energy storage into larger systems and applications. We present a systematic analysis of technology trends to guide market players, researchers, and policymakers in promoting EV adoption. |
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| Main Authors: | Sousa, Beatriz Alves de |
| Subject: | Electric car batteries patent data science of science innovation Baterias de carros elétricos patente ciência de dados da ciência inovação SDG 4 - Quality education SDG 7 - Affordable and clean energy SDG 9 - Industry, innovation and infrastructure SDG 11 - Sustainable cities and communities SDG 12 - Responsible production and consumption SDG 13 - Climate action |
| Year: | 2024 |
| Country: | Portugal |
| Document type: | master thesis |
| Access type: | open access |
| Associated institution: | Universidade Nova de Lisboa |
| Language: | English |
| Origin: | Repositório Institucional da UNL |
| Summary: | Climate change and technological advances are driving the rise of electric vehicles (EVs), with batteries at their core, influencing cost, range, charging time, and lifespan. As sustainable EV battery development is vital for widespread adoption, investigating innovation in this field allows us to assess the landscape of battery-related inventions. This study uses a two-fold approach: (1) patent analysis and (2) bibliometric methods, exploring battery developments from 2000 to 2022. It contributes to the literature by comparing two different approaches to innovation: to patent it and protect it or to publish it and disseminate it. Using data from PATSTAT and Web of Science, the study analyses around 20 000 international patent families and more than 20 000 publications. We find continuous growth in the innovation output, particularly from 2010 onwards and identify productive countries, notably Asian nations, as leading patent and scientific research contributors. By comparing the G7 and BRICS outputs, we find that the first group leads in patent applications, while the second recently leads in scientific studies. An analysis of keywords uncovers an evolutionary shift in battery chemistries, for example from lead acid to Li-ion. We also identify a shift towards the integration of energy storage into larger systems and applications. We present a systematic analysis of technology trends to guide market players, researchers, and policymakers in promoting EV adoption. |
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