本人是电化学新手，测试出来的阻抗图与文献中形状不同，求教原因，跪谢。

以下是一组原始数据，Z\'\'出现有正有负的现象：

Freq/Hz, Z\'/ohm, Z"/ohm, Z/ohm, Phase/deg

8.252e+4, 8.132e-1, 5.051e-1, 9.573e-1, 31.8
6.812e+4, 7.976e-1, 4.171e-1, 9.001e-1, 27.6
5.625e+4, 7.881e-1, 3.436e-1, 8.597e-1, 23.6
4.644e+4, 7.798e-1, 2.814e-1, 8.290e-1, 19.8
3.833e+4, 7.752e-1, 2.303e-1, 8.087e-1, 16.5
3.164e+4, 7.721e-1, 1.879e-1, 7.946e-1, 13.7
2.612e+4, 7.708e-1, 1.527e-1, 7.858e-1, 11.2
2.153e+4, 7.704e-1, 1.232e-1, 7.801e-1, 9.1
1.777e+4, 7.706e-1, 9.852e-2, 7.769e-1, 7.3
1.470e+4, 7.712e-1, 7.781e-2, 7.751e-1, 5.8
1.211e+4, 7.719e-1, 6.043e-2, 7.743e-1, 4.5
1.001e+4, 7.730e-1, 4.528e-2, 7.743e-1, 3.4
8.252e+3, 7.743e-1, 3.205e-2, 7.750e-1, 2.4
6.812e+3, 7.759e-1, 2.092e-2, 7.762e-1, 1.5
5.625e+3, 7.777e-1, 1.140e-2, 7.777e-1, 0.8
4.643e+3, 7.794e-1, 3.046e-3, 7.794e-1, 0.2
3.833e+3, 7.814e-1, -4.543e-3, 7.814e-1, -0.3
3.164e+3, 7.834e-1, -1.173e-2, 7.835e-1, -0.9
2.612e+3, 7.854e-1, -1.878e-2, 7.857e-1, -1.4
2.153e+3, 7.877e-1, -2.589e-2, 7.881e-1, -1.9
1.777e+3, 7.904e-1, -3.331e-2, 7.911e-1, -2.4
1.470e+3, 7.933e-1, -4.128e-2, 7.944e-1, -3.0
1.211e+3, 7.966e-1, -4.998e-2, 7.981e-1, -3.6
1.001e+3, 7.999e-1, -5.882e-2, 8.020e-1, -4.2
8.252e+2, 8.034e-1, -6.848e-2, 8.063e-1, -4.9
6.836e+2, 8.078e-1, -8.024e-2, 8.117e-1, -5.7
5.615e+2, 8.131e-1, -9.432e-2, 8.186e-1, -6.6
4.639e+2, 8.196e-1, -1.110e-1, 8.271e-1, -7.7
3.809e+2, 8.272e-1, -1.298e-1, 8.374e-1, -8.9
3.174e+2, 8.362e-1, -1.514e-1, 8.497e-1, -10.3
2.588e+2, 8.466e-1, -1.759e-1, 8.647e-1, -11.7
2.148e+2, 8.587e-1, -2.039e-1, 8.826e-1, -13.4
1.758e+2, 8.728e-1, -2.356e-1, 9.041e-1, -15.1
1.465e+2, 8.886e-1, -2.706e-1, 9.289e-1, -16.9
1.221e+2, 9.075e-1, -3.118e-1, 9.596e-1, -19.0
9.766e+1, 9.302e-1, -3.563e-1, 9.961e-1, -21.0
8.254e+1, 9.560e-1, -4.057e-1, 1.039e+0, -23.0
6.813e+1, 9.850e-1, -4.659e-1, 1.090e+0, -25.3
5.623e+1, 1.018e+0, -5.374e-1, 1.151e+0, -27.8
4.642e+1, 1.054e+0, -6.212e-1, 1.224e+0, -30.5
3.831e+1, 1.099e+0, -7.201e-1, 1.314e+0, -33.2
3.162e+1, 1.152e+0, -8.348e-1, 1.422e+0, -35.9
2.610e+1, 1.207e+0, -9.648e-1, 1.545e+0, -38.6
2.154e+1, 1.265e+0, -1.114e+0, 1.685e+0, -41.4
1.778e+1, 1.325e+0, -1.286e+0, 1.847e+0, -44.2
1.468e+1, 1.388e+0, -1.489e+0, 2.035e+0, -47.0
1.212e+1, 1.456e+0, -1.727e+0, 2.258e+0, -49.9
1.000e+1, 1.530e+0, -2.010e+0, 2.526e+0, -52.7
8.254e+0, 1.608e+0, -2.353e+0, 2.850e+0, -55.6
6.813e+0, 1.692e+0, -2.768e+0, 3.244e+0, -58.6
5.623e+0, 1.782e+0, -3.268e+0, 3.723e+0, -61.4
4.642e+0, 1.885e+0, -3.875e+0, 4.309e+0, -64.1
3.831e+0, 2.004e+0, -4.596e+0, 5.014e+0, -66.4
3.162e+0, 2.144e+0, -5.468e+0, 5.873e+0, -68.6
2.610e+0, 2.321e+0, -6.508e+0, 6.910e+0, -70.4
2.154e+0, 2.530e+0, -7.805e+0, 8.205e+0, -72.0
1.778e+0, 2.800e+0, -9.367e+0, 9.776e+0, -73.4
1.468e+0, 3.182e+0, -1.113e+1, 1.157e+1, -74.0
1.212e+0, 3.718e+0, -1.314e+1, 1.366e+1, -74.2
1.000e+0, 4.465e+0, -1.547e+1, 1.610e+1, -73.9
8.254e-1, 5.452e+0, -1.817e+1, 1.897e+1, -73.3
6.813e-1, 6.718e+0, -2.130e+1, 2.233e+1, -72.5
5.623e-1, 8.341e+0, -2.487e+1, 2.623e+1, -71.5
4.642e-1, 1.041e+1, -2.887e+1, 3.069e+1, -70.2
3.831e-1, 1.301e+1, -3.335e+1, 3.580e+1, -68.7
3.162e-1, 1.624e+1, -3.829e+1, 4.159e+1, -67.0
2.610e-1, 2.018e+1, -4.366e+1, 4.809e+1, -65.2
2.154e-1, 2.488e+1, -4.937e+1, 5.528e+1, -63.3
1.778e-1, 3.038e+1, -5.540e+1, 6.318e+1, -61.3
1.468e-1, 3.663e+1, -6.168e+1, 7.174e+1, -59.3
1.212e-1, 4.368e+1, -6.824e+1, 8.102e+1, -57.4
1.000e-1, 5.169e+1, -7.521e+1, 9.126e+1, -55.5
8.254e-2, 6.041e+1, -8.258e+1, 1.023e+2, -53.8
6.813e-2, 6.951e+1, -9.039e+1, 1.140e+2, -52.4
5.623e-2, 7.898e+1, -9.896e+1, 1.266e+2, -51.4
4.642e-2, 8.887e+1, -1.086e+2, 1.403e+2, -50.7
3.831e-2, 9.928e+1, -1.196e+2, 1.555e+2, -50.3
3.162e-2, 1.104e+2, -1.325e+2, 1.724e+2, -50.2
2.610e-2, 1.223e+2, -1.477e+2, 1.918e+2, -50.4
2.154e-2, 1.354e+2, -1.661e+2, 2.143e+2, -50.8
1.778e-2, 1.498e+2, -1.877e+2, 2.402e+2, -51.4
1.468e-2, 1.657e+2, -2.132e+2, 2.700e+2, -52.1
1.212e-2, 1.839e+2, -2.438e+2, 3.054e+2, -53.0
1.000e-2, 2.044e+2, -2.797e+2, 3.465e+2, -53.8


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