Unfortunately the human experts (The Hansens). on this technology were assimilated off the USS Raven in 2353, Stardate 32611.4. Their ship was ship was pulled into a transwarp conduit after an ion storm damaged the vessel's multi-adaptive shielding and they were detected by the Borg.
Terra flux capacitors have never been found to be adaptive to Borg technology and are far to under powered at this time. You may be stuck Somewhere in Time.
You may have to go into a stasis pod for a couple of hundred years until the technology is locally available.