The use of sodium manganese oxide as an intercalation electrode for water treatment was recently explored, and referred to as a “desalination battery” and “hybrid capacitive deionization”. Here, we examine the feasibility of using such a desalination battery, comprising crystalline Na₄Mn₉O₁₈ as the cathode and Ag/AgCl/Cl⁻ electrode as the anode, to extract energy from low-grade waste heat sources. Sodium manganese oxide electrode's material was produced via a solid-state synthesis. Electrodes were produced by spray-coated onto graphite foils, and showed a temperature dependence of the electrode potential, namely, $\partial E/\partial T$, of −0.63 mV/K (whereas, the Ag/AgCl/Cl⁻ mesh electrode showed much lower temperature dependence, < 0.1 mV/K). In order to demonstrate ion-removal capabilities together with the feasibility of thermal-energy conversion, a flow battery system was constructed. Thermally regenerative electrochemical cycles (TREC) were constructed for the flow battery cell. The thermal energy conversion, in this particular system, was shown to be feasible at relatively low C-rate (C/19) with temperatures varying between 30 °C and 70 °C.

最近探索了使用氧化锰钠作为插层电极进行水处理，并将其称为“脱盐电池”和“混合电容去离子”。这里，我们考察使用这样的脱盐电池的可行性，其包含结晶的Na ₄的Mn ₉ ø ₁₈作为阴极和银/氯化银/氯^-从低档废热源电极作为阳极，以提取能量。钠锰氧化物电极的材料是通过固态合成制备的。通过喷涂在石墨箔上生产电极，并显示出电极电位的温度依赖性，即$\partial E/\partial Ť$，-0.63毫伏/ K的（然而，所述的Ag / AgCl /氯^-网状电极显示出低得多的温度依赖性，<0.1毫伏/ K）。为了证明离子去除能力以及热能转化的可行性，构建了液流电池系统。为液流电池组构建了热再生电化学循环（TREC）。在该特定系统中，热能转换在相对低的C速率（C / 19）下且温度在30°C至70°C之间变化时是可行的。