Sustainable and eco-friendly electrochemical energy storage and conversion strategies are extremely important topics in the industry. Various energy storage and conversion systems such as high-energy storing capacitors, hydrogen fuel cells, CO2 electrolysis, and batteries can benefit from nanotechnology. By engineering the composition and surface properties of materials at the nano-scale, the performance of systems can be significantly improved.
CO2 Reduction 
Na-Ion Batteries 
Li-Ion Batteries
Further reading
“Versatile, Transferrable 3-Dimensionally Nanofabricated Au Catalysts with High-Index Crystal Planes for Highly Efficient and Robust Electrochemical CO2 Reduction” Journal of Materials Chemistry A, 2019, 7(11), 6045-6052 Minhyung Cho+, Jong Min Kim+, Beomil Kim, Soonmin Yim , Ye Ji Kim , Yeon Sik Jung*, and Jihun Oh* [Link]
“Extremely Small Pyrrhotite Fe7S8 Nanocrystals with Simultaneous Carbon-Encapsulation for High-Performance Na-Ion Batteries” Small, 2017, 14(2), 1702816 Min-Jae Choi, Jongsoon Kim, Jung-Keun Yoo, Soonmin Yim, Jaebeom Jeon, and Yeon Sik Jung* [Link]
“Extremely High-yield Conversion from Low-cost Sand to High-Capacity Si Electrodes for Li-ion Batteries” Advanced Energy Materials, 2014, 4(16), 1400622 Jung-keun Yoo, Jongsoon Kim, Min-Jae Choi, Young-Uk Park, Jihyun Hong, Kwang Min Baek, Kisuk Kang*, and Yeon Sik Jung* [Link]