Page 175 - Handbook of Battery Materials

144 4 Electrochemistry of Manganese Oxides

Table 4.9 EPVs (effective pore volumes) IC and IBA MnO 2 samples.

MnO 2 Heat treatment Initial Pore volume by EPV % Based Remarks a
−1
sample temperature volume of N 2 desorption (mL g ) on N 2 pore
−1
◦
( C) 50 g (mL) (mL g ) volume
IC No. 1 (25) 24.0 – 0.024 – –
(EMD, Ti) 120 23.5 0.0416 0.044 105.8 0
230 23.0 0.0539 0.050 92.8 0
IC No. 2 (25) 25.5 – 0.026 – –
(EMD, 120 24.0 0.0332 0.040 120.5 0
Pb) 230 26.0 0.0449 0.044 98.0 0
IC No. 3 (25) 26.0 – 0.032 – –
(EMD, C) 120 27.0 0.0407 0.044 108.1 0
230 26.5 0.0524 0.064 122.1 0
IC No. 4 (25) 32.0 – – (No clear step) –
(EMD) 120 31.0 0.0367 – – –
230 30.5 0.0479 – – –
IC No. 5 (25) 38.0 – 0.208 –
(CMD) 120 38.0 0.408 0.240 170.5 x
x
230 40.0 0.1515 0.244 161.1
IC No. 7 (25) 27.0 – 0.010 – –
(NMD) 120 27.5 0.0242 0.014 58.3 x
230 27.0 0.0284 0.014 50.0 x
IC No. 8 (25) 33.0 – 0.164 – –
(CMU) 120 33.5 0.177 0.170 96.1 0
230 34.0 0.183 0.170 93.0 0
IC: No. 9 (25) 27.0 – 0.032 – –
(EMD) 120 27.5 0.0545 0.062 113.7 0
230 27.5 0.0664 0.072 108.4 0
IC No. 10 (25) 27.0 – 0.046 – –
(EMD) 120 27.0 0.0490 0.060 122.4 0
230 27.0 0.0571 0.062 108.8 0
IC No. 11 (25) 20.0 – 0.010 – –
(CMD) 120 20.5 0.0062 0.026 419.4 x
230 20.5 0.0089 0.016 179.7 x
IBA No. (25) 22.5 – 0.020 – –
14 (EMD) 120 22.0 0.036 0.030 83.3 0
IBA No. (25) 26.0 – 0.020 – –
15 (EMD) 120 26.0 0.038 0.046 121.0 0
IBA No. (25) 24.5 – 0.024 – –
16 (EMD) 120 25.0 0.037 0.034 91.9 0