CV experiments under CO2 showed the two redox peaks observed under N2 being replaced by one broader redox peak indicating the capture of CO2 (Figure ). The cell was charged and discharged over 200 cycles and the raw pressure data of f-ABP under CO2 (Figure ) showed the downward slope, linked to degradation, was still present in the initial cycles. The initial CO2 adsorption capacity of f-ABP (0.2 mmol g -1 ) was lower than what was observed for f-BP-1300 (0.4 mmol g -1 ) whereas the release capacities were both around ~0.2 mmol g -1 in the two materials indicating the reversible capture of CO2 is similar in both cases, despite the higher quinone loading for f-ABP. After 200 cycles under CO2, the adsorption capacity for both f-BP-based systems decreased to around 0.1 mmol g -1 (Figure , 5A), with f-ABP losing a slightly lower percentage of CO2 adsorption capacity over the 200 cycles. This is also supported by the electrochemical capacity retention of 77.0% with little change in double-layer capacitance (see current at around 0.3 V, where redox peaks are absent) but a reduction in current from quinone peaks was seen (Figure ) suggesting anthraquinone loss or degradation. Lower electronic charge values under CO2 (Figure .1) suggests that the electrochemical irreversibility seen above for f-BP-1300 was partially caused by the presence of surface functional groups however the faradaic efficiency was seen to decrease to 40% compared to 70% in f-BP-1300 (Figure .2). A higher proportion of electronic charge was being used to reduce anthraquinones and capture CO2, shown by the increase in discharge: release to 50%. However, the low adsorption capacity and decreased anthraquinone utilization to 20% indicate only a small proportion of anthraquinone is being utilized. Summarizing, significant degradation was still present after thermal annealing the initial BP-1300 carbon support. This shows that while the removal of surface functional groups was able to improve the anthraquinone loading, it was not able to prevent the loss of anthraquinone or improve CO2 adsorption capacity over long cycling. By removing surface groups before functionalization, anthraquinones are thought to more easily attach directly to the carbon network however the grafting environment would still depend on the porosity and particle size of the carbon. Therefore, it is more likely that the carbon porosity is limiting the stability of the electrochemical carbon capture systems developed here. If quinone multilayers are forming in mesopores or on external particle surfaces, these would limit the stability of the quinones on the ABP surface as observed in long cycling experiments. Overall, BP materials showed limited stability in long carbon capture cycling, even after annealing, compared to predominantly microporous f-YP-80F.