What Sort of Problems Could I Be Researching as a Quantum Chemist?

This area sounds interesting to me to focus a PhD on. But I was wondering what problems are there in quantum chemistry that need researchers? If I became a quantum chemist, which sort of problems would I be working on, and are they problems with practical implications or mostly theoretical research? Are there any problems that need work that are related to renewable or sustainable energy research?



I also read that a lot of quantum chemistry problems and calculations are now solved by computer software, so would I be relegated to designing software for other scientists to use?



Thank-you