Abstract
Electromobility (e-mobility) is applicable to issues from sustainable transportation to revolutionary driving behaviour. The wide-ranging influence of this concept calls for a shift toward an internationalization of e-mobility research in developed and developing countries alike. Germany and China, as the major exporters and volume producers in the automotive industry, have established the goal of becoming market leaders in e-mobility by 2020. Compared to China, Germany, as a forerunner in the field of e-mobility, is unexpectedly lagging behind in both the sale volume of electric vehicles (EVs) and the share of international publications. Since 2006, China has been the second largest single “producer” of EV-related published research, trailing only the United States. However, the technological capabilities—applying science to real-world issues—seem to be under-represented in these publications. This paper explores structural differences in e-mobility research landscapes and examines possible contextual explanations for the differences between Germany and China. The study involves a detailed comparison of articles sourced from the two countries, beginning with a broad overview of recent research and ending with a short content analysis of the statement concerning current progress and practical challenges for e-mobility development in Germany and China. The conclusion reached is that both countries have explored topics related to EV modes, batteries, energy management and the smart grid; however, specific terms of interest have evolved differently in the two countries. Compared with China, Germany has not achieved a rapid increase in the number of international publications but has still accumulated a vast reservoir of scientific talents and technological resources through the scientific collaboration between academia and industry. Universities, as the main loci of scientific research in China, have actively engaged in international cooperation, addressing problems with no apparent differences from those addressed in Germany. The authors’ views relative to the development of e-mobility in the two countries vary greatly from group to group, indicating that differences should be considered in both the pattern of knowledge production and the research context.
Notes
The Consulting Project of Chinese Academy of Engineering (2016-XZ-03-05).
Term by first year is limited by the time span of the dataset (2006–2015), which means that the keywords extracted in each year are relatively new within this interval but could appear before 2006.
VOSviewer reduces the set of key terms or institutions shown in maps by removing the items in the network that are not connected to each other.
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Acknowledgements
The author would like to thank for financial supports provided by the China Scholarship Council (No. 201506060153), the National Science Foundation of China (No. 71673036) and the Consulting Project of Chinese Academy of Engineering (2016-XZ-03-05).
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Appendix
Appendix
The matched search queries are constructed as follows:
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1.
NEVs-TS = ((“Electric* Vehicle*” OR “electric* car*” OR “electric* motor car*” OR “electric* motor vehicle*” OR “electric* driven vehicle*” OR “electric* automobile*” OR “electric traveling vehicle*” OR “electric motorcar*” OR “electric powered vehicle*” OR “Plug-in Hybrid Vehicle*” OR “Plug-in Hybrid electric Vehicle*” OR “Hydrogen Fuel Cell vehicle*” OR “Hydrogen Vehicle*” OR “E-mobility” OR “PHEV” OR “Extended-Range Electric Vehicle*” OR “range-extended electric vehicle*”) NOT (“bike*” OR “bicycle*” OR “electrical cardioversion” OR “electric* cardiograms” OR “electric* cardiac” OR “electrically cardio*” OR “electric* cardio*” OR “Electric* carrier” OR “Electric* carotid” OR “Hybrid Vehicle*” OR “Exposure Value*” OR “Hepatitis E virus” OR “Natural gas vehicle*” OR “mobile robot*” OR “i.e., mobility” OR “Urban mobility” OR “Ion mobility” OR “Nanoparticle*” OR “particle*” OR “Hybrid Electric Vehicle*” OR “GI-VR50-pheV” OR “Porcine hemagglutinating encephalomyelitis virus” OR “Porcine haemagglutinating encephalomyelitis virus” OR “tRNA” OR “pheV tRNA” OR “pheV tRNA locus” OR “pheV locus” OR “shRNA” OR “DENGUE VIRUS” OR “gene” OR “pHEV-4TW” OR “Enterotoxigenic Escherichia coli” OR “genomic island”));
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2.
ESVs-TS = ((“Hybrid Vehicle*” OR “Hybrid car*” OR “Hybrid Electric Vehicle*” OR “Hybrid Electric* Car” OR “Hybrid Electric* Cars” OR “Alternative fuel vehicle*” OR “Alternative fuel Car*” OR “Gas vehicle*” OR “HEV” OR “HEVs” OR “Compressed natural gas vehicle” OR “Liquefied natural gas vehicle”) NOT (“Plug-in Hybrid Vehicle*” OR “off-vehicle chargeable hybrid electric vehicle*” OR “PHEV*” OR “Hepatitis E*” OR “hepatitis E virus *” OR “latex allergy*” OR “Hendra virus” OR “Enterovirus” OR “carrageenan” OR “High endothelial venules”)).
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Zhao, Q. Electromobility research in Germany and China: structural differences. Scientometrics 117, 473–493 (2018). https://doi.org/10.1007/s11192-018-2873-9
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DOI: https://doi.org/10.1007/s11192-018-2873-9